Cooling Unit Thermostat "ON" Unit. Unit. Heating. Right. Left. One Body Type. Indoor Unit BS Unit "ON" "OFF" "ON" Fan "ON" Indoor unit Operation

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1 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" EVSC Fan "ON" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "OFF" 224pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi STD TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

2 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "OFF" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi STD TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg In operation of defrosting Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

3 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "OFF" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg In operation of defrosting Tb 20SA Tf EVM 20SB HPS Tdi STD TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

4 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "OFF" EVLS EVL "OFF" EVSC Fan "OFF" EVHS EVH Cooling Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

5 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "ON" 192pls EVSC Fan "LL" EVHS EVH Heating Unit Thermostat "OFF" EVLS EVL "OFF" 192pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

6 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" EVSC Fan "ON" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "ON" 192pls EVSC Fan "LL" EVHS EVH Heating Unit Thermostat "OFF" EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

7 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "OFF" EVLS EVL "OFF" 192pls EVSC Fan "OFF" EVHS EVH Cooling Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

8 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "ON" EVSC Fan "LL" EVHS EVH Heating Unit Thermostat "OFF" EVLS EVL "OFF" 224pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

9 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" EVSC Fan "ON" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "OFF" 224pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

10 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit Thermostat "ON" EVLS EVL "OFF" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg In operation of defrosting Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVG SVO TS_A S2NPL

11 Indoor unit Operation "ON" Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Thermostat "ON" EVLS EVL "ON" 0pls EVSC EVHS Fan "OFF" EVH Heating Unit Thermostat "ON" EVLS EVL "OFF" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Dual Pressure Gas Pipe Suction Pipe Stop Valve Stop Valve EVJ Stop Valve Equalizing Pipe Equalizing Pipe SVP Suction Pipe One Body Type Tsc Left EVT Tsh SVE Tg In operation of defrosting Tb 20SA Tf EVM 20SB HPS Tdi INV TS_A Liquid Pipe Tsc TL Right Tsh EVT SVE Tg Tb 20SA Tf EVM SVL Ta S1NPH HPS Tdi Refrigerant Regulator INV SVO TS_A S2NPL

12 Indoor Unit BS Unit EVSC Fan "OFF" EVHS EVH Cooling Unit EVLS EVL Operation "OFF" EVSC Fan "ON" EVHS EVH Cooling Unit EVLS EVL Operation "ON" Thermostat "OFF" EVSC Fan "ON" EVHS EVH Cooling Unit EVLS EVL Operation "ON" Thermostat "ON" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) Liquid Pipe Stop Valve Tsc TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT SVE Tg Tb SVE Tg Tb Tf 20SA EVM Tf 20SA EVM INVFAN INVFAN Equalizing Pipe Equalizing Pipe Stop Valve S1NPH S1NPH Stop Valve SVL SVP SVP Dual Pressure Gas Pipe 20SB Dual Pressure Gas Pipe Stop Valve 20SB Stop Valve HPS Refrigerant HPS HPS Regulator Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 S2NPL S2NPL Gauge EVJ EVJ Gauge Port Port Suction Pipe Suction Pipe Stop Valve Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

13 Indoor Unit BS Unit 192pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL Operation "OFF" 192pls EVSC Fan "LL" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "OFF" EVSC Fan "ON" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "ON" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) Liquid Pipe Stop Valve Tsc TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT SVE Tg Tb SVE Tg Tb Tf 20SA EVM Tf 20SA EVM INVFAN INVFAN Equalizing Pipe Equalizing Pipe S1NPH Stop Valve Stop Valve S1NPH SVL SVP SVP Dual Pressure Gas Pipe Dual Pressure Gas Pipe 20SB Stop Valve Stop Valve 20SB HPS Refrigerant HPS HPS Regulator Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 S2NPL S2NPL Gauge Gauge EVJ EVJ Port Port Suction Pipe Suction Pipe Stop Valve Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

14 Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit EVLS EVL Operation "ON" Thermostat "ON" EVSC Fan "ON" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "ON" 192pls EVSC Fan "LL" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "OFF" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) Liquid Pipe Stop Valve Tsc TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT SVE Tg Tb SVE Tg Tb Tf 20SA EVM Tf 20SA EVM INVFAN INVFAN Equalizing Pipe Equalizing Pipe S1NPH Stop Valve Stop Valve S1NPH SVL SVP SVP Dual Pressure Gas Pipe Dual Pressure Gas Pipe 20SB Stop Valve Stop Valve HPS Refrigerant HPS Regulator HPS Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 S2NPL S2NPL Gauge Gauge EVJ EVJ Port Port Suction Pipe Suction Pipe Stop Valve Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

15 Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit EVLS EVL Operation "ON" Thermostat "ON" EVSC Fan "ON" EVHS EVH Cooling Unit EVLS EVL Operation "ON" Thermostat "OFF" 192pls EVSC Fan "OFF" EVHS EVH Cooling Unit EVLS EVL Operation "OFF" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) Liquid Pipe Stop Valve Tsc TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT SVE Tg Tb SVE Tg Tb Tf 20SA EVM Tf 20SA EVM INVFAN INVFAN Equalizing Pipe Equalizing Pipe Stop Valve S1NPH Stop Valve S1NPH SVL SVP SVP Dual Pressure Gas Pipe Dual Pressure Gas Pipe 20SB Stop Valve Stop Valve 20SB Refrigerant HPS HPS Regulator HPS Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 S2NPL S2NPL Gauge Gauge EVJ EVJ Port Port Suction Pipe Suction Pipe Stop Valve Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

16 Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "ON" EVSC Fan "LL" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "OFF" 224pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL Thermostat "OFF" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) Liquid Pipe Stop Valve Tsc TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT SVE Tg Tb SVE Tg Tb Tf 20SA EVM Tf 20SA EVM INVFAN INVFAN Equalizing Pipe Equalizing Pipe S1NPH Stop Valve Stop Valve S1NPH SVL SVP SVP Dual Pressure Gas Pipe 20SB Dual Pressure Gas Pipe Stop Valve Stop Valve HPS Refrigerant HPS Regulator HPS Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 S2NPL S2NPL Gauge Gauge EVJ EVJ Port Port Suction Pipe Suction Pipe Stop Valve Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

17 Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit EVLS EVL Operation "ON" Thermostat "ON" EVSC Fan "ON" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "ON" 224pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "OFF" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) Liquid Pipe Stop Valve Tsc TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT SVE Tg Tb SVE Tg Tb Tf 20SA EVM Tf 20SA EVM INVFAN INVFAN Equalizing Pipe Equalizing Pipe S1NPH S1NPH Stop Valve Stop Valve SVL SVP SVP Dual Pressure Gas Pipe 20SB Dual Pressure Gas Pipe Stop Valve 20SB Stop Valve HPS Refrigerant HPS Regulator HPS Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 S2NPL S2NPL Gauge Gauge EVJ EVJ Port Port Suction Pipe Suction Pipe Stop Valve Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

18 Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit Operation "ON" Thermostat "ON" EVLS EVL 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "ON" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL Operation "OFF" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Liquid Pipe Stop Valve Tsc Equalizing Pipe Stop Valve SVP Dual Pressure Gas Pipe Stop Valve EVJ Suction Pipe Stop Valve REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT 20SA Tg INVFAN Tb Tf SVE EVM 20SA Tg In operation of defrosting Tb Tf SVE EVM INVFAN Equalizing Pipe S1NPH Stop Valve S1NPH SVL SVP Dual Pressure Gas Pipe 20SB Stop Valve 20SB Refrigerant HPS HPS Regulator HPS Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 S2NPL S2NPL Gauge Gauge EVJ Port Port Suction Pipe Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

19 Indoor Unit BS Unit EVSC Fan "ON" EVHS EVH Cooling Unit EVLS EVL Operation "ON" Thermostat "ON" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL Operation "ON" Thermostat "ON" 0pls EVSC Fan "OFF" EVHS EVH Heating Unit EVLS EVL Operation "OFF" "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" REMQ8PY1 (Multi 8HP) REMQ10, 12PY1 (Multi 10, 12HP) Liquid Pipe Stop Valve Tsc TL Liquid Pipe EVT Stop Valve Tsc TL Tsh Tsh EVT 20SA Tg In operation of defrosting INVFAN Tb Tf SVE EVM 20SA Tg Tb Tf SVE EVM INVFAN Equalizing Pipe Equalizing Pipe Stop Valve SENPH Stop Valve SENPH SVL SVP SVP Dual Pressure Gas Pipe Dual Pressure Gas Pipe 20SB Stop Valve Stop Valve 20SB HPS Refrigerant HPS HPS Regulator Tdi Tdi Tds1 SVT SVG SVT INV SVO INV S1 SENPL SENPL Gauge Gauge EVJ EVJ Port Port Suction Pipe Suction Pipe Stop Valve Stop Valve TS_A TS_A SVL Refrigerant Regulator SVO SVG

20 S1NPH S2NPL S1PH EVM EVT Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG Ta INV Pressure regulating valve Right Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator S1NPH S2NPL S1PH EVM EVT Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG Ta INV Pressure regulating valve Right Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator

21 Indoor Unit BS Unit EVSC Liquid Pipe Cooling Unit EVLS EVH EVL EVHS Dual Pressure Gas Pipe Suction Pipe Indoor Unit (Close) BS Unit EVSC Liquid Pipe EVHS (Open) EVH (Close) EVL (Close) EVLS (Close) Dual Pressure Gas Pipe Suction Pipe Indoor Unit BS Unit EVSC Liquid Pipe Heating Unit EVLS EVL EVH EVHS Dual Pressure Gas Pipe Suction Pipe

22 Indoor Unit BS Unit EVSC Liquid Pipe Heating Unit EVLS EVL EVH EVHS Dual Pressure Gas Pipe Suction Pipe Indoor Unit (Close) BS Unit EVSC Liquid Pipe In equalization EVHS (Close) EVH (Close) EVL (Close) EVLS (Open) Dual Pressure Gas Pipe Suction Pipe Indoor Unit BS Unit EVSC Liquid Pipe Cooling Unit EVLS EVL EVH EVHS Dual Pressure Gas Pipe Suction Pipe

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27 Indoor unit stop or thermostat OFF Thermostat ON Operation in stop mode Pressure egualization prior to startup Rotation Cooling startup Normal operation Compressor PI control Motorized valve PI control Protection control Thermostat ON Heating startup Large capacity startup in operation Operation mode changeover Malfunction/ Standby After completion of startup control Indoor unit stop or thermostat OFF Thermostat ON Malfunction/ Stanby Indoor unit stop or thermostat OFF Malfunction/ Standby Restart standby Pump-down residual operation Operation mode changeover Indoor unit stop or thermostat OFF Malfunction/ Stanby Oil return IN conditions are met Yes Oil return operation No Defrost IN conditions are met Yes Defrosting operation No Operation mode changeover Yes Operation mode changeover Mode changeover No Malfunction/Standby Oil return, Defrost and Mode changeover move on to the next process after the completion of above function in progress even if the thermostat is OFF during the operation.

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30 Each compressor operates in the following order of priority.in the case of multi-outdoor-unit system, each compressor operates in any of Pattern 1through Pattern 3 according to the rotation of outdoor units. Pattern 1 Pattern 2 Pattern 3 INV:Inverter compressor STD1:Standard compressor 1 STD2:Standard compressor 2 RXYQ5P RXYQ8P RXYQ10P, 12P RXYQ14P, 16P, 18P No. 1 No. 1 No. 1 No. 2 No. 1 No. 2 No. 3 INV INV INV STD1 INV STD1 STD2 RXYQ20P RXYQ22P RXYQ24P, 26P No. 1 No. 2 No. 3 No. 1 No. 3 No. 2 No. 4 No. 1 No. 3 No. 2 No. 4 No. 5 No. 2 No. 1 No. 3 No. 2 No. 4 No. 1 No. 3 No. 2 No. 4 No. 1 No. 3 No. 5 INV INV STD1 INV STD1 INV STD1 INV STD1 INV STD1 STD2 RXYQ28P, 30P RXYQ32P, 34P, 36P No. 1 No. 3 No. 2 No. 4 No. 5 No. 2 No. 4 No. 1 No. 3 No. 5 No. 1 No. 3 No. 5 No. 2 No. 4 No. 6 No. 2 No. 4 No. 6 No. 1 No. 3 No. 5 INV STD1 INV STD1 STD2 INV STD1 STD2 INV STD1 STD2 RXYQ38P No. 1 No. 2 No. 4 No. 3 No. 5 No. 6 No. 3 No. 1 No. 4 No. 2 No. 5 No. 6 No. 2 No. 3 No. 5 No. 1 No. 4 No. 6 INV INV STD1 INV STD1 STD2

31 REYQ38P, 40P No. 1 No. 4 No. 3 No. 6 No. 2 No. 5 No. 2 No. 5 No. 1 No. 4 No. 3 No. 6 No. 3 No. 6 No. 7 No. 2 No. 5 No. 7 No. 1 No. 4 No. 7 INV STD1 INV STD1 INV STD1 STD2 REYQ42P, 44P No. 1 No. 4 No. 3 No. 6 No. 2 No. 5 No. 2 No. 5 No. 7 No. 1 No. 4 No. 7 No. 3 No. 6 No. 8 No. 3 No. 6 No. 8 No. 2 No. 5 No. 8 No. 1 No. 4 No. 7 INV STD1 INV STD1 STD2 INV STD1 STD2 REYQ46P, 48P No. 1 No. 4 No. 7 No. 3 No. 6 No. 9 No. 2 No. 5 No. 8 No. 2 No. 5 No. 8 No. 1 No. 4 No. 7 No. 3 No. 6 No. 9 No. 3 No. 6 No. 9 No. 2 No. 5 No. 8 No. 1 No. 4 No. 7 INV STD1 STD2 INV STD1 STD2 INV STD1 STD2

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38 Fan step 9 Pc>3.28MPa PI control Fan step 8 Pc>3.18MPa PI control Fan step 7 Pc>3.08MPa PI control -1 step on outdoor unit fan Lapse of 20 sec. PI control Hold the current step on outdoor unit fan PI control Lapse of 20 sec. +1 step on outdoor unit fan

39 Outdoor unit Left side Right side Condenser Condenser GR > 25 GR < -20 Outdoor unit Left side Right side Evaporator Condenser GR > 25 GR < -20 Outdoor unit Note 1. "GR" is a numeric value Left side Evaporator GR > 15 Right side GR < -10 representing the current balanced condition and calculated from target condensing temperature, Outdoor unit target evaporating Left side Right side temperature, current Evaporator Evaporator condensing temperature, and current evaporating temperature. A1 A2 Outdoor unit Condenser Condenser Condenser GR > 15 GR < -10 Outdoor unit Condenser Condenser Condenser GR > 25 GR < -20 Note 1. "GR" is a numeric value representing the current balanced condition and calculated from target condensing temperature, target evaporating temperature, current condensing temperature, and current evaporating temperature. Note 2. On the system with two outdoor units, if there is no step for the destination of transition, that step will be skipped. B1 1 Outdoor unit 2 Evaporator 3 GR > 15 GR < -10 A3 Outdoor unit 1 2 Condenser Condenser 3 GR > 25 GR < -20 B2 Outdoor unit 1 2 Evaporator Evaporator 3 GR > 15 GR < -10 GR > 15 GR < -10 A4 Outdoor unit Condenser Evaporator Evaporator GR > 25 B3 Outdoor unit Evaporator Evaporator Evaporator

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42 INV STD Pc Pressure Number of compressors 5 0 Time Pe Start up STD compressors at intervals of 15 seconds.

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47 OFF Pcmax>2.45MPa Pcmax<2.36MPa Pcmax>3.04MPa FANSTEP4 FANSTEP6 Pcmax<2.95MPa OFF Pcmax>2.45MPa Pcmax<2.36MPa Pcmax>3.04MPa FANSTEP4 FANSTEP6 Pcmax<2.95MPa

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51 Crankcase heater OFF Discharge pipe temperature < 70 C Discharge pipe temperature > 75 C Crankcase heater ON

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53 Normal Operation Pc_max>3.47MPa Upper limit compressor step=max (Max. Step) When high pressure is limited Upper limit compressor step: 2-step down Pc_max >3.47MPa Pc_max >3.55MPa After 10 sec. After 10 sec. Current step maintained For multi units: When STD compressor is in operation STD compressor standby When STD compressor stays stopped 52Hz+OFF+OFF (upper limit) Pc_max <3.24MPa Upper limit compressor step: 1-step up After 15 sec. For single unit: 8 to 12HP 52Hz+OFF 14, 16HP 52Hz+52Hz (upper limit) High pressure standby Pc_max >3.64MPa When occurring 3 times within 30 min., HPS is activated without high pressure standby, thus outputting the malfunction code E3.

54 Normal Operation Pc_max>3.31MPa Pc_max<2.94MPa When high pressure is limited Compressor step: 7 STEP down Pc_max >3.42MPa & After 10 sec. Pc_max>3.31MPa Set the compressor step to STEP 1 Pc_max>3.64MPa High pressure standby When occurring 3 times within 30 min., HPS is activated without high pressure standby, thus outputting the malfunction code E3

55 Normal Operation Pe_min<0.34MPa Pe_min>0.39MPa During the control of low pressure protection Single type: Compressor step of the present situation 0.5 Multi type: 210Hz+OFF+OFF (upper) Pe_min<0.25MPa Single type: 8~12HP: 52Hz+OFF 14~16HP: 52Hz+52Hz (upper limit) Multi type: 52Hz+OFF+OFF (upper limit) Pe_min<0.15MPa Pe_min>0.29MPa 1: Y4S for single system. Y5S for multi system. Hot gas solenoid valve ( 1) ON Pe_min<0.07MPa Low pressure standby When occurring 4 times within 30 min., the malfunction code E4 is output.

56 Normal Operation Pe_min <0.17MPa & Pe_min>0.23MPa Upper limit compressor step=max (Max. step) During the control of low pressure protection Compressor step: 2-step down Pe_min >0.27MPa After 10 sec. After 15 sec. Pe_min >0.20MPa Current step maintained Pe_min <0.17MPa After 15 sec. Pe_min <0.13MPa For single unit: 8 to 12HP: 52Hz+OFF 14 to 16HP: 52Hz+52Hz (upper limit) For multi units: When STD compressor is in operation One STD compressor stops When STD compressor stays stopped 52Hz+OFF+OFF (upper limit) Upper limit compressor step: 2-step up Upper limit compressor step: 1-step up After 10 sec. Pe_min<0.07MPa Low pressure standby When occurring 4 times within 30 min., the malfunction code E4 is output.

57 Normal operation or HTdi>115 C Tp>135 C & HTdi<100 C Tp<110 C NV upper limit step=max (Max. step) INV Comp. upper limit step: 1-step down INV Comp. upper limit step: 1-step up After 30 sec. or HTdi>115 C Tp>135 C After 20 sec. & HTdi<110 C Tp<125 C In control of discharge pipe temperature protection Frequency agreement or HTdi>130 C HTdi>120 C continues for 90 seconds or more. 52Hz+OFF+OFF Discharge pipe temperature standby HTdi>135 C or HTdi>120 C continues for 10 minutes or more. When occuring 3 times within 100 min., the malfunction code F3 is output. HTds: Value of STD compressor discharge pipe temperature (Tds) compensated with outdoor air temperature. Tp : Value of compressor port temperature calculated by Tc and Te, and suction superheated degree. or HTds>120 C continues for 5 min. or more. HTds>135 C Tp>135 C continues for 10 min. or more. Discharge pipe temp. protection control not limited Applicable STD compressor stops. After 10 min.

58 Normal operation Inverter current value >14.7A & Inverter current value<14.7a INV upper limit frequency=max (210Hz) During the control of inverter protection INV Comp. upper limit step: 1-step down 10 seconds Inverter current value >14.7A Inverter current value <14.7A continues for 20 seconds Current status maintained INV Comp. upper limit step: 1-step up Inverter current>16.1a continues for 260 seconds. Inverter current standby When occuring 4 times within 60 min., the malfunction code L8 is output.

59 Normal operation Tfin>84 C & Tfin<81 C INV upper limit frequency=max (210Hz) During the control of fin temperature protection INV Comp. upper limit step: 1-step down 10 seconds Tfin>84 C Tfin<81 C continues for 3 minutes Current status maintained INV Comp. upper limit step: 1-step up Tfin>93 C Fin temperature standby When occuring 4 times within 60 min., the malfunction code L4 is output.

60 STD compressor ON Demand to operate. CT detection current value>15.0a *If the power supply is reset while in operation prohibition mode, the prohibition timer will continue counting when the power supply is turned ON. STD compressor OFF for 30 min.* When occurring 3 times within 90 min., the malfunction code E6 is output.

61 RUN/STOP

62 Start Turn ON power supply Initialize electronic expansion valve 20E Cooling Operation (Option) Aux. electric heater 52H : OFF Humidifier Mu : OFF Cyclic operation with RUN/STOP pushbutton Cooling Operation Cooling Detect louver lock LED in remote control turns ON Run or Stop? Run Is the safety device activated? No Is the RUN indicating lamp blinking? No RUN indicating lamp: ON Air flow rate display: Displayed Wind direction display: Displayed Temp. setting display: Displayed Fan or Temp. control? Cooling or Heating? The previous settings of air ( ) flow rate, wind direction, and Stop Yes Yes Fan Temp. control Heating Heating Operation temperature are displayed. RUN indicating lamp: OFF RUN indicating lamp: Blink Malfunction code: Displayed Press the RESET RUN/STOP pushbutton. RUN indicating lamp: OFF Malfunction mode display: Reset Fan Operation *1 *2 Fan MF : Stop Electronic 20E : Closed expansion valve Louver MA : Stop (Option) Drain *3 pump kit MP : OFF Aux. electric heater 52H : OFF Humidifier Mu : OFF *4 Swing flap Yes Swing flap Microcomputer dry ON/OFF OFF Microcomputer dry display: Reset Fan: MF Operating with set air flow rate Is Restart prevention operation in progress? (5 min.) No Is freeze prevention operation in progress? No Is test run in progress? No ON A No Yes Drain pump kit : OFF after 5-min. MP residual operation (Option) Yes Drain pump kit MP :ON No (Option) *5 OFF Drain pump kit Thermostat status MP : OFF after 5-min. residual operation ON Electronic expansion valve: 20E Capacity control Microcomputer dry operation (Option) Dew prevention condition? Set wind direction Yes Dew prevention position Cassette type: P1 Ceiling suspended type: P0 Electronic expansion valve: 20E Closed A (Option) *6 Drain pump kit: *1. If any malfunction occurs, the relevant malfunction code will be displayed according to the malfunction MP ON code display of the remote control. *2. When the aux. electric heater turns ON, the fan will stop after it conducts residual operation for 1 min. *3. When the drain pump kit turns ON, the drain pump kit will stop after it conducts residual operation for a period of 5 min. *4. If the evaporator inlet temperature is kept at not more than -5 C for a period of cumulative 10 min. or not A more than -1 C for a cumulative period of 40 min., frost prevention operation will be conducted. If the evaporator inlet temperature is kept at not less than 7 C for a consecutive period of 10 min., the frost prevention operation will be reset. *5. Thermostat status OFF Set temperature ON Thermostat-ONoperation signal to outdoor unit: Output Suction air temperature a=b=1 (a=b=0.5 is only available for the FXCQ, FXFQ, FXHQ, and FXKQ series.) Thermostat-ONoperation signal to outdoor unit: Output a b *6. The FXCQ, FXFQ, FXKQ, and FXSQ series have the drain pump as standard equipment.

63 Microcomputer dry operation Heating Operation *7 Microcomputer dry display (option) Drain pump kit MP : OFF *8 Thermostat status OFF ON Fan MF : Operating in L mode Electronic expansion valve 20E : Superheated degree control Fan MF : Operating in L mode after it stops for 6 min. Electronic expansion valve Closed 20E : (Option) Drain pump kit MP : OFF after 5-min. residual operation *12 Swing flap? Yes Swing flap Is defrost operation in progress? No Yes *12 Set wind direction A *7. Microcomputer dry display No set temperature and air flow rate of the remote controller are displayed. *8. Thermostat status Set temperature when operating the microcomputer dry mechanism. Yes No *13 Is hot starting Yes in progress? No DEFROST/HOT START indicating lamp: OFF Restart prevention operating in progress? (4 min.) No DEFROST/HOT START indicating lamp: ON Is test run in progress? a Suction air temperature b (1) *14 Thermostat status (3) (2) *9 (Option) Fan Operation Drain pump kit MP : OFF Aux. electric heater Humidifier A 52H : OFF Mu : OFF Swing flap Yes Swing flap No *11 Fan MF: Operating with set air flow rate Electronic expansion valve Closed 20E : *10 Set wind direction (Option) (Option) (Option) (Option) Aux. electric heater 52H : OFF Humidifier Mu : OFF Aux. electric heater 52H : OFF Humidifier Mu : ON No Fan MF : Fan MF : Fan MF : Fan MF : LL operation Operating with set air flow rate Operating in L mode Stop A *15 Is outlet air temperature drop protection in progress? Aux. electric heater 52H : ON Humidifier Mu : ON Yes Aux. electric heater 52H : OFF Humidifier Mu : OFF Electronic 20E : Electronic expansion valve 20E : Electronic 20E : expansion valve expansion valve Closed Capacity control Open *12. Wind direction When the heating thermostat turns OFF, the wind direction will be set to 100% horizontal. *13. Hot start If the condenser inlet temperature exceeds 34 C at the time of starting operation or after the completion of defrost operation, or until 3 minutes pass or Tc is above 52 C, hot starting will be conducted. *14. Thermostat status (3) *9. Fan operation By setting the remote controller to Fan, the fan will operate with thermostat OFF in set temperature control operation mode. *10. Set wind direction According to wind direction instruction from the remote controller, the wind direction is set to 100% horizontal while in heating operation. *11. Fan According to fan speed instruction from the remote controller, the fan is put into operation in LL mode while in heating operation. -4 (2) -2 Set temp. Suction air temp. *15. Outlet air temperature drop protection When the set temperature is below 24 C or the electronic expansion valve opening is small, the protection will be activated. b a (1)

64 Preset temperature (Ts) Range in which thermostat sensor in remote control can be used Range in which body thermostat sensor can be used Suction temperature (TH1) Differential

65 Preset temperature (Ts) Range in which thermostat sensor in remote control can be used Range in which body thermostat sensor can be used Suction temperature (TH1) Differential

66 Cooling operation: Tr < Set temperature -1ºC Normal Thermostat OFF operation Tr: Temperature detected with the suction air thermistor (R1T) Heating operation: Tr > Set temperature +1ºC Normal Thermostat OFF operation when Tro 24.5ºC: Tr < Tro - 1ºC In dry operation Thermostat OFF Tro: Suction air temperature at the time of starting the dry operation when Tro 24.5ºC: Tr < Tro - 1.5ºC In dry operation Thermostat OFF Tr: Temperature detected with the suction air thermistor (R1T)

67 Set heating temperature Set cooling temperature (A-D) C A C D C Cooling thermostat ON Cooling thermostat OFF Display change Cooling Heating Display change Heating Cooling Heating thermostat OFF Heating thermostat ON 3 C D 2 ( +2) C (Ex.) When automatic cooling temperature is set to 27 C: Differential value :0 C Differential value set to 4 C Set cooling/ heating temp. 27 C 25 C 30 C Cooling mode Set heating temp. Set cooling temp. 23 C 27 C 26 C Cooling mode Control temp. Control temp. Heating mode Differential value set to 1 C Set heating temp. Set cooling temp. 26 C 27 C 24.5 C 29 C Cooling mode Heating mode Differential value set to 5 C Set heating temp. 22 C 22.5 C 25 C Set cooling temp. 27 C Cooling mode Control temp. Control temp. Heating mode Differential value set to 2 C Set heating temp. Set cooling temp. 25 C 27 C 24 C 28 C Cooling mode Heating mode Differential value set to 6 C Set heating temp. Set cooling temp. 21 C 27 C 22 C 24 C Cooling mode Control temp. Control temp. Heating mode Differential value set to 3 C Set heating temp. Set cooling temp. 24 C 27 C 23.5 C Cooling mode Heating mode Differential value set to 7 C Set heating temp. Set cooling temp. 20 C 27 C 21.5 C 23 C Cooling mode Heating mode Control temp. Heating mode Control temp.

68 Thermostat (running) ON OFF Remote control A3 flashing malfunction stop Float switch ON OFF Drain pump ON OFF 5 min. 5 min. 5 sec. *1) Residual operation Malfunction residual (VL008) Enters malfunction treatment if the float switch is not reset within 5 minutes. Termostat (running) ON OFF Remote control "A3" flashing malfunction stop ON Float switch OFF ON Drain pump OFF 5min 5 sec 5min 5 sec (VL009)

69 Thermostat (running) ON OFF Remote control A3 flashing malfunction stop Humidifier ON OFF Float switch ON OFF Reset Drain pump ON OFF 5 min. 5 sec. 5 min. (VL010) Remote control display AF display (running) Enters malfunction treatment if the float switch is not reset within 5 minutes. Remote control A3 flashing malfunction stop Float switch ON OFF 1st time 2nd time 3rd time 4th time 5th time Drain pump ON OFF *1 = 5 min. *1 *1 *1 *1 *1 *1 *1 (VL011)

70 Δ Δ Δ Δ Δ Δ

71 10 min. +7ºC 0ºC OR 5ºC 10 min. Freeze prevention operation Forced OFF by thermostat 10 min. (VG005) +7ºC 0ºC 1ºC t1 t2 t3 t4 Freeze prevention operation Forced OFF by thermostat t >40min. 10 min. +7ºC 0ºC 1 min. Freeze prevention operation Forced OFF by thermostat OR 10 min. +7ºC +1ºC t1 t2 t3 t4 Freeze prevention operation Forced OFF by thermostat t >15min.

72 ON Set temperature OFF 2ºC 2ºC ON 43ºC 50ºC Liquid pipe temperature OFF ON 50ºC 60ºC Condensing pressure equivalent saturated temperature OFF

73

74 Defrost ending or oil return ending or Thermostat ON Hot start ending conditions OR lapse of 3 minutes [TH2]>34 C "Tc">52 C Hot start control Hot start in progress Fan Louver H/L remote control setting LL OFF Remote control setting Po (Horizontal) The fan is not OFF before initiating the hot start: LL The fan is OFF before initiating the hot start: OFF Normal control Normal control

75 Existing position P0 P1 P2 P3 P4 Draft prevention position P0 Standard Setting position P0 Ceiling soiling prevention position (Not for Multi flow type) P0 Draft prevention position P1 P2 P4 P3 P0 P4 P4' P1 P3' P0' P1' P2' P4 P4'' P2 P0'' P1'' P2'' P3'' P1 P2 P3 P4 Same as existing position Range of direction adjustment Standard position Prohibited P0' P1' P2' P3' P4' Separated into 5 positions (P1-4) Range of direction adjustment Dirt prevention position Prohibited P0'' P1'' P2'' P3'' P4'' Separated into 5 positions (P2-4) The factory set position is standard position. (VL012)

76

77 3. Selection of Location 4. Inspecting and Handling the Unit 5. Placing the Unit 7. Field Wiring 6. Refrigerant Piping 8. Airtight Test and Vacuum Drying 9. Pipe Insulation 10. Checking of Device and Installation Conditions 11. Additional Refrigerant Charge and Check Operation 13. Test Run Operations which require the power to be turned on.

78 Check the below items. 2Power wiring 2Control transmission wiring between units 2Earth wire Is the wiring performed as specified? Is the designated wire used? Is the wiring screw of wiring not loose? Is the grounding work completed? Is the insulation of the main power supply circuit deteriorated? Use a 500V megger tester to measure the insulation. (*1) 2 Do not use a megger tester for other circuits than 200V (or 240V) circuit. *1:Measure to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for an extended period of time after the refrigerant charge with the stop valve open and the power supply OFF, the refrigerant may be mixed in the compressor, thus decreasing the insulation resistance. Heat the compressor as shown on the right and then recheck the insulation. Terminal Dryer (1000W) Heat the left side of the terminal for a period of approximately 15 minutes. Check on refrigerant piping / insulation materials Check airtight test and vacuum drying. Is the pipe size proper? Are the design pressures for the liquid pipe, suction pipe, dual pressure gas pipe, and pressure equalizer pipe (in case of multi units) all not less than 4.0 MPa? Is the pipe insulation material installed securely? Liquid, suction and high & low pressure gas pipe need to be insulated. (Otherwise causes water leak.) Have the airtight test and the vacuum drying been conducted according to the procedure in the Installation Manual?

79 Check on amount of refrigerant charge Is a proper quantity of refrigerant charged? The following method is available for additional charging of refrigerant. (1) Calculate additional refrigerant quantity. % % Has the additional refrigerant charging amount been recorded on the "Precautions for servicing" label? Check the stop valves for conditions. Check to be sure the stop valves are under the following conditions. Liquid-pipe stop valve Equalizing pipe stop valve Dual pressure gas pipe stop valve Open Open Open Suction pipe stop valve Open

80 Turn outdoor unit and indoor unit power on. Be sure to turn the power on 6 hours before starting operation to protect compressors. (to power on clankcase heater) Check the LED display of the outdoor unit PC board. Check to be sure the transmission is normal. The transmission is normal if the LEDs display conditions as shown in table below. LED display (Default status before delivery) One outdoor unit installed Master When multiple outdoor unit Slave 1 installed (*) Slave 2 Micro-co mputer operation monitor HAP MODE TEST H1P H2P LED display 4 ON 7 OFF 5 Blinking COOL / HEAT select IND H3P MASTER SLAVE H4P H5P Low noise Demand H6P H7P Multi H8P (*) The master unit is the outdoor unit to which the transmission wiring for the indoor units is conncted. The other outdoor units are slave units. Make field settings with outdoor unit PC board. Make field settings if needed. (For the setting procedure, refer to information in "3.2. Field Setting from Outdoor Unit" on page 215 onward.) For the outdoor-multi system, make field settings with the master unit. (Field settings made with the slave unit will be all invalid.) <REYQ8~16P8Y1B> <REMQ8~12P8Y1B> <REMQ14, 16P8Y1B> Inside a switch box "A1P" PC board Inside a switch box "A1P" PC board Inside a switch box "A1P" PC board * Another switch box is provided on the front left side of the unit, but it requires no field settings. Conduct check operations. Check for normal operation. The check operations shown below will be automatically initiated. Check for erroneous wirings Check for failure to open stop valves Check for excessive refrigerant refilling Automatic judgment of piping length Before starting the normal operation after the completion of check operations, make sure indoor and outdoor units normally operate.

81 Gauge manifold Charge hose Refrigerant charge port HP/LP gas pipe shutoff valve Suction gas pipe shutoff valve Liquid pipe shutoff valve Outdoor unit Nitrogen Measuring device R410A tank (with siphon) Vacuum pump : Field piping : Gas flow Valve C Valve A Valve B To BS (or indoor) unit : Shutoff valve ( : Service port ) Gauge manifold Nitrogen Measuring device R-410A tank (with siphon) Vacuum pump Equalizer pipe shutoff valve HP/LP gas pipe shutoff valve Suction gas pipe shutoff valve Liquid pipe shutoff Charge hose valve Refrigerant charge port Valve A : Field piping : Gas flow Valve C : Shutoff valve ( : Service port ) Valve B Outdoor unit To BS (or indoor) unit Outdoor unit Outdoor unit

82

83 Caulking, etc. Insulation material Piping lead-out hole lid Block. Open a knock hole at Contains fluorinated greenhouse gases covered by the Kyoto Protocol

84 φ φ φ φ φ φ φ φ φ φ Service port Cap Seal Shaft Hexagon hole figure 19

85 φ φ φ φ

86

87 Outdoor unit Liquid pipe stop valve Charge hose Refrigerant charge port Valve A Valve B Suction gas pipe stop valve High pressure/low pressure gas pipe stop valve Valve C Measuring instrument Refrigerant tank (R-410A, siphon system) To BS unit, indoor unit Stop valve Service port Field piping Refrigerant flow when pre-charging through the liquid stop valve service port (refer to step 3 on page 164) Refrigerant flow when automatic charging through the charge port (refer to step 5 on page 164) figure 23

88 P2 P2 4 0

89 P2 P2

90 PE P PEP

91 P8 P2 PE P9 PA, PH P8 P

92 = << < < < < < < < < < < < < < < < < < < <

93 A2P TP1 TP2 A1P A3P E7

94 1 2

95 LED H1~8P Push button switches BS1~BS5 DIP switch 2 (DS2: 1~4) DIP switch 1 (DS1: 1~4) DIP switch 3 (DS3: 1~2) MODE TEST: C/H SELECT HWL: IND MASTER SLAVE L.N.O.P DEMAND MULTI H1P H2P H3P H4P H5P H6P H7P H8P BS1 BS2 BS3 BS4 BS5 MODE SET RETURN TEST RESET

96

97 L H M L

98 U3 U

99 E3 E4 F3 F6 UF U1 LC U1 U4 UF E3 F6 UF E4 F3 PF U3

100

101 4 0

102

103 φ φ φ φ φ φ φ φ φ Service port Cap Seal Shaft figure 13 Hexagon hole φ φ φ φ

104

105

106 High pressure/low pressure gas pipe stop valve Equalizer pipe stop valve Refrigerant tank (R-410A, siphon system) Charge hose Suction gas pipe stop valve Liquid pipe stop valve Refrigerant charge port Valve A Measuring instrument Valve B Valve C Refrigerant tank (R-410A, siphon system) To BS unit, indoor unit Measuring Measuring instrument instrument Valve A The refrigerant will be charged with ±30 kg in 1 hour at an outdoor temperature of 30 C DB (12 kg at 0 C DB). If you need to speed up in case of a multi system, connect the refrigerant tank to each outdoor unit. Stop valve Service port Field piping Refrigerant flow when precharging through the liquid stop valve service port (refer to step 3 on page 183) Refrigerant flow when automatic charging through the charge port (refer to step 5 on page 183) figure 24

107 P2 P2 4 0

108 P2 P2 4 0

109 PE P PEP

110 P8 P2 PAPHPC P8 P2 PAPHPCPAPHPC PAPHPC

111 = << < < < < < < < < < < < < < < < < < < <

112 A2P TP1 TP2 A1P A3P E7

113 1 2

114 LED H1~8P Push button switches BS1~BS5 DIP switch 2 (DS2: 1~4) DIP switch 1 (DS1: 1~4) DIP switch 3 (DS3: 1~2) MODE TEST: C/H SELECT HWL: IND MASTER SLAVE L.N.O.P DEMAND MULTI H1P H2P H3P H4P H5P H6P H7P H8P BS1 BS2 BS3 BS4 BS5 MODE SET RETURN TEST RESET

115

116 L H M L

117 U3 U

118 E3 E4 F3 F6 UF U1 LC U1 U4 UF E3 F6 UF E4 F3 PF U3

119

120 4 0

121 Operating with set air flow rate Electronic expansion valve Closed A 20E : A *12. Wind direction When the heating thermostat turns OFF, the wind direction will be set to 100% horizontal. *13. Hot start If the condenser inlet temperature exceeds 34 C at the time of starting operation or after the completion of defrost operation, or until 3 minutes pass or Tc is above 52 C, hot starting will be conducted. *14. Thermostat status (3) *9. Fan operation By setting the remote controller to Fan, the fan will operate with thermostat OFF in set temperature control operation mode. *10. Set wind direction According to wind direction instruction from the remote controller, the wind direction is set to 100% horizontal while in heating operation. *11. Fan According to fan speed instruction from the remote controller, the fan is put into operation in LL mode while in heating operation. -4 (2) -2 Set temp. Suction air temp. *15. Outlet air temperature drop protection When the set temperature is below 24 C or the electronic expansion valve opening is small, the protection will be activated. b a (1) Caution When the 400 volt power supply is applyed to "N" phase by mistake, replace Inverter PC board (A2P) and control transformer (T1R, T2R) in switch box together. (V0847)

122 (2) Set mode display (LED) (3) Mode setting switch H1P H2P H3P H4P H5P H6P H7P H8P BS1 BS2 BS3 BS4 BS5 HAP DS1 DS2 MODE SET RETURN TEST RESET (1) Microcomputer normal monitor (4) Local setting switch Connection terminal for transmission use F1 F2 F1 F2 Q1 Q2 Indoor - Outdoor Outdoor - Outdoor Multi outdoor (1) Microcomputer normal monitor This monitor blinks while in normal operation, and turns on or off when a malfunction occurs. (V3054) (2) Set mode display (LED) LEDs display mode according to the setting. (3) Mode setting switch Used to change mode. (4) Local setting switch Used to make field settings.

123 UNIT. SECOND CODE. FIRST CODE... UNIT. 3 4 SETTING MODE. FIELD SET MODE. 1 7 TEST (V0292)

124 Mode No. Field set mode Second code No. First code No. 2 1, 6 (V2770)

125 MODE. UNIT. FIRST CODE. SECOND CODE

126

127

128

129 F2 T1 T2 Forced stop Input A

130

131

132

133 00 GROUP. MODE. UNIT. SETTING FIELD SET MODE TEST ,6 Mode No. Field set mode 3 4 Group No. 2 1, 5 (V0916)

134 Indoor/Outdoor Outdoor/Outdoor Indoor/Outdoor Outdoor/Outdoor Centoral Remote Control F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 RC 1-00 Main RC RC Sub RC Group Control by Remote Contol (autmatic unit address) F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 No Remote Control 1-03 RC 1-04 (V0917)

135 Example ON by remote control (Unified ON by central remote control) OFF by remote control (Unified OFF by central remote control) OFF by remote control Temperature control by remote control Operation mode setting by remote control Control mode is "1." Rejection Rejection Rejection Acceptance Acceptance (VL069) Central remote control When ON/OFF, temperature setting and operation mode setting by local remote control is forbidden, UNDER CENTRAL CONTROL is displayed on the remote control.

136

137

138 Status of DIP switches ON OFF ON OFF DS1 DS2 : Represents the factory setting positions of the switches. Initial conditions of dip switches ON OFF ON OFF DS1 DS2

139 Single Use A1P (Main) EB**** LED DS1 DS2 ON Factory Set ( represents the position of switches) OFF DS DS2 Allocation Application model Setting method ( represents the position of switches) For Europe HEAT RECOVERY(8HP) REYQ8P8Y1B HEAT RECOVERY(10HP) REYQ10P8Y1B HEAT RECOVERY(12HP) REYQ12P8Y1B HEAT RECOVERY(14HP) REYQ14P8Y1B HEAT RECOVERY(16HP) REYQ16P8Y1B ON OFF ON OFF ON OFF ON OFF ON OFF DS1 DS DS1 DS DS1 DS DS1 DS DS1 DS Set DS1-4 and DS2-3 to ON. Set DS1-4 to ON. Set DS1-4 and DS2-2 to ON. Set DS1-3, DS1-4 and DS2-2 to ON. Set DS1-3, DS1-4 and DS2-3 to ON.

140 Single Use A3P (Sub) EB**** LED DS1 DS2 ON Factory Set ( represents the position of switches) OFF DS DS2 Allocation Application model Setting method ( represents the position of switches) For Europe HEAT RECOVERY(8HP) REYQ8PY1B HEAT RECOVERY(10HP) REYQ10PY1B HEAT RECOVERY(12HP) REYQ12PY1B HEAT RECOVERY(14HP) REYQ14PY1B HEAT RECOVERY(16HP) REYQ16PY1B ON OFF ON OFF ON OFF ON OFF ON OFF DS1 DS DS1 DS DS1 DS DS1 DS DS1 DS Set DS1-3 and DS2-2 to ON. Set DS1-3 and DS2-2 to ON. Set DS1-3 and DS2-2 to ON. Set DS1-3, DS2-1 and DS2-4 to ON. Set DS1-3, DS2-1 and DS2-3 to ON.

141 Multiple Type Allocation Application model Setting method ( represents the position of switches) For Europe HEAT RECOVERY(8HP) REMQ8P8Y1B HEAT RECOVERY(10HP) REMQ10P8Y1B HEAT RECOVERY(12HP) REMQ12P8Y1B HEAT RECOVERY(14HP) REMQ14P8Y1B HEAT RECOVERY(16HP) REMQ16P8Y1B ON OFF ON OFF ON OFF ON OFF ON OFF DS1 DS DS1 DS DS1 DS DS1 DS DS1 DS Set DS1-4, DS2-2 and DS2-3 to ON. Set DS1-4 and DS2-4 to ON. Set DS1-4, DS2-2 and DS2-4 to ON. Set DS1-4, DS2-3 and DS2-4 to ON. Set DS1-4, DS2-2, DS2-3 and DS2-4 to ON.

142 BS1 BS2 BS3 BS4 BS5 MODE SET RETURN TEST REWIRING Used to change the setting mode Used for onsite setting Used to set up address when wiring is changed or an indoor unit is added Used for check operation and test operation Using the MODE button, the modes can be changed as follows. Setting mode 2 Push and hold the BS1 (MODE button) for 5 seconds. (Normal) Setting mode 1 Push the BS1(MODE button) one time. Monitor mode MODE Push the BS1(MODE button) one time. MODE MODE On Off Blinking H1P H1P H1P (V2761)

143 (Set): Select mode with BS2 (SET button) in each selection step. Press BS1 (MODE button) for more than 5 sec. Setting mode 1 (Initial condition) Press BS1(MODE button). Setting mode 2 Monitor mode Setting item selection (SET button) Setting condition selection (SET button) Setting condition (Contents) display Press BS3 (RETURN button). Press BS3 (RETURN button). Press BS3 (RETURN button). Press BS1 (MODE button). Check item selection (SET button) Contents display Press BS3 (RETURN button). Press BS3 (RETURN button). Press BS1 (MODE button). (V2762)

144 Procedure for checking check items The system is normally set to "Setting mode 1". Should the system be set to any mode other than that, push the MODE (BS1) button to set the system to "Setting mode 1". MODE H1P TEST H2P COOL/HEAT select IND H3P MASTER SLAVE H4P H5P Low noise H6P Demand H7P Check the system for each condition through LED displays. (Refer to information in table on the right.) Current operating conditions 7Normal 8Abnormal 8In preparation or in check operation Low noise operating conditions 7In normal operation 8In low noise operation Pushing the RETURN (BS3) button will bring the system to the initial state of "Setting mode 1". (V2763) Demand operating conditions 7In normal operation 8In demand operation

145 b. Setting mode 2 Push and hold the MODE (BS1) button for 5 seconds and set to Setting mode 2. <Selection of setting items> Push the SET (BS2) button and set the LED display to a setting item shown in the table on the right. Push the RETURN (BS3) button and decide the item. (The present setting condition is blinked.) <Selection of setting conditions> Push the SET (BS2) button and set to the setting condition you want. Push the RETURN (BS3) button and decide the condition. Push the RETURN (BS3) button and set to the initial status of Setting mode 2. If you become unsure of how to proceed, push the MODE (BS1) button and return to setting mode 1. (V2764)

146

147

148

149 c. Monitor mode To enter the monitor mode, push the MODE (BS1) button when in Setting mode <Selection of setting item> Push the SET (BS2) button and set the LED display to a setting item. <Confirmation on setting contents> Push the RETURN (BS3) button to display different data of set items Push the RETURN (BS3) button and switches to the initial status of Monitor mode. Push the MODE (BS1) button and returns to Setting mode 1. (V2765)

150 No No

151 1 2 SS1 1 2 SS2 TE: This setting must be completed before turning power supply ON. In case of the indoor unit connect as the cool-only unit, it wire he terminal F1 F2of the last BS unit. OUT/D.BS F1 F2 F1 F2 IN/D OUT/D.BS F1 F2 F1 F2 Final BS unit To the indoor unit where the selection of heating and cooling is available. 1st unit Cooling only Final unit Outside unit TO IN/D UNIT TO OUT/D UNIT F1 F2 F1 F2 Branch wiring Use 2-core wires. (There is no polarity.) Cool/heat selector remote control wiring Use 3-core wires. (Keep in mind the polarity.) F1 F2 F1 F2 IN/D OUT/D.BS REMOTE CONTROLLER A B C F1 F2 F1 F2 IN/D OUT/D.BS REMOTE CONTROLLER A B C F1 F2 F1 F2 IN/D OUT/D.BS REMOTE CONTROLLER A B C BS unit A BS unit B Final BS unit F1 F2 F1 F2 F1 F2 COOL/HEAT selector F1 F2 COOL/HEAT selector Fig. 1 F1 F2 COOL/HEAT F1 F2 selector Indoor unit for cooling

152 If carrying out demand or low-noise input, connect the terminals of the external control adapter for outdoor unit as shown below. F1 F2 N P C Demand X1M Low noise To other external control adapter for outdoor unit Outside wiring indicated by dotted line. Host computer monitor panel or demand controller

153 Operation sound Rated operation sound Operation sound of mode 1 Operation sound of mode 2 Operation sound of mode 3 Low noise of approx. 2 to 3 db (The power consumption may be increased by about 10%.) Low noise of approx. 3 to 5 db (The power consumption may be increased by about 20%.) Low noise of approx. 5 to 8 db (The power consumption may be increased by about 30%.) Note1: Above values are reference only (measured in silent room) Note2: Above values are for 1 module only. If capacity precedence is set in Capacity precedence setting, the fan speed will be increased according to the load of air conditioning when load is heavier. Low noise mode instructing Operation sound level set with External low noise setting Operation sound during low noise mode is instructed can be set with External low noise level setting (Factory setting is Mode 2.) (V3078) Operation sound Time set with Night-time low noise start setting If capacity precedence is set in Capacity precedence setting, the fan speed will be increased according to the load of air conditioning when load is heavier. Time set with Night-time low noise end setting Rated operation sound Operation sound of mode 1 Operation sound of mode 2 Night-time Operation sound during night-time low noise mode is instructed can be set with Night-time low noise level setting. (Factory setting is OFF.) Operation sound of mode 3 Operation sound level set with Night-time low noise setting PM 8:00 PM 10:00 PM 0:00 AM 6:00 AM 7:00 AM 8:00 Set with Night-time low noise start setting. (Factory setting is PM 10:00.) Set with Night-time low noise end setting. (Factory setting is AM 8:00.) (V3079) Operation sound Rated operation sound Operation sound of mode 1 Operation sound of mode 2 Operation sound of mode 3 Time set with Night-time low noise start setting Low noise mode instructing Operation sound set with External low noise setting PM 8:00 PM 10:00 PM 0:00 AM 6:00 AM 7:00 AM 8:00 Set with Night-time low noise start setting. (Factory setting is PM 10:00.) If capacity precedence is set in Capacity precedence setting, the fan speed will be increased according to the load of air conditioning when load is heavier. Time set with Night-time low noise end setting * Operation sound level set with Night-time low noise setting * Night-time * Low noise mode instructing * Operation sound set with External low noise setting Set with Night-time low noise end setting. (Factory setting is AM 8:00.) Operation sound during low noise mode is instructed can be set with External low noise level setting. (Factory setting is Mode 2.) Operation sound during night-time low noise mode is instructed can be set with Night-time low noise level setting. (Factory setting is OFF.) When external low noise instruction is received during the operation with night-time low noise mode, Mode 2 precedes Mode 1 and Mode 3 precedes Mode 2. (V3080)

154 If carrying out demand or low-noise input, connect the terminals of the external control adapter for outdoor unit as shown below. F1 F2 N P C Demand X1M Low noise To other external control adapter for outdoor unit Outside wiring indicated by dotted line. Host computer monitor panel or demand controller

155 Power consumption Rated power consumption 80 % of rated power consumption 70 % of rated power consumption 60 % of rated power consumption 40 % of rated power consumption Forced thermostat OFF (Fan operation) Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing Power consumption set by "Demand 1 level setting". The power consumption during the demand level 1 instructing can be set with the "Demand 1 level setting". ("70 % of rated power consumption" has been set at factory.) (V3081) Power consumption Rated power consumption 80 % of rated power consumption 70 % of rated power consumption 60 % of rated power consumption The power consumption set with "Demand 1 level setting". When the "Normal demand setting" is set to ON ("OFF" has been set at factory.), the power consumption can be set with the "Demand 1 level setting". ("70 % of rated power consumption" has been set at factory.)? (V3082) Power consumption Rated power consumption 80 % of rated power consumption 70 % of rated power consumption 60 % of rated power consumption 40 % of rated power consumption Forced thermostat OFF (Fan operation) The power consumption set with "Demand 1 level setting". HDemand level 2 instructing HDemand level 3 instructing The power consumption can be set with the "Demand 1 level setting". ("70 % of rated power consumption" has been set at factory.) HDuring continuous demand operation, when the external demand instruction is received repeatedly, the instruction with higher demand level has the precedence. (V3083)

156

157

158

159 Step 1 CHECK OPERATION FUNCTION Unit stopping Pressure equalizing (Press the MODE button BS1 once and set to SETTING MODE 1 (H1P: OFF)) Press the TEST button for 5 seconds. 10 sec to 10 minutes LED display (H1P~H7P) (4: ON 7: OFF 5: BLINK) Step 2 Cooling start control sec to 2 minutes Step 3 Stop valve close check Stop valve close check Stop valve check Stop valve check Step4~8 Judgement function Wrong wiring check Correct Refrigerant charge check Piping length check Wrong wiring check Piping length check Step 9 Pump down residual operation minutes Step 10 Standby for restarting minutes Completion

160

161

162

163

164 Outdoor unit BS unit a Indoor unit BS unit b Indoor unit Indoor unit c

165

166 A0 A1 A3 A6 A6 A6 A7 A9 A9 AF AJ C4 C5 C9 CJ E1 E3 E4 E5 E6 E7 E9 F3 F6 F9 H7 H9 J2

167 J3 J4 J5 J6 J7 J8 J9 JA JC L1 L4 L5 L8 L9 LC P1 P4 PJ U0 U1 U2 U3 U4 U5 U7 U8 U9 UA UC UE UF UH

168 M1 M8 MA MC

169 Circuit breaker ON Knob Tripped OFF

170

171

172 Indoor unit settings can be made Filter sign time Air flow direction Others Local setting mode Depress Inspection/Test Operation button for more than 4 seconds. Service data can be obtained. Service mode Malfunciton code history Temperature data of various sections Service settings can be made. Forced fan ON Air flow direction/volume setting Depress Inspection/Test Operation button for more than 4 seconds. Press Inspection/Test Operation button once. Press Inspection/Test Operation button once. Normal mode Press Inspection/Test Operation button once. Or after 30 minutes After 10 seconds Following codes can be checked. Malfunction codes Indoor model code Outdoor model code Inspection mode Test operation mode Thermostat is forcibly turned on. Press Inspection/Test Operation button once. (V0815)

173 Operation LED ON/OFF button Display of indoor unit for which a malfunction has been detected Inspection display Malfunction code Inspection/Test button

174 Advance button Backward button (SE006)

175 Advance button Backward button (SE007)

176 Normal status Enters inspection mode from normal status when the INSPECTION/TEST button is pressed. 1. Press INSPECTION/TEST button. If no button is pressed for 1 minute, equipment returns to normal status. When MODE selector button is pressed or no button is pressed for 1 minute, equipment returns to normal status. 3. Press MODE selector button. If no button is pressed for 1 minute, equipment returns to normal status. 5. Press MODE selector button.

177 Normal display (No display) Unit Malfunction code Inspection 0 L 0 Malfunction code blinks when a malfunction occurs. Inspection/test operation Push the button. Unit Malfunction code Inspection Inspection/test operation 0 L 0 Inspection mode Push the button F C J Indoor unit model code display Capacity code F... Indoor unit system code C... Indoor unit type code J... Progression code Indoor unit system code Display Product classification 1 VRV system 2 VRV system F VRV system H VRV system Example of capacity code display Example model FXCQ25 FXFQ63 Display System classification (VAV indoor unit) Outdoor air processing unit Standard indoor unit New ceilling suspended cassette Inspection/test operation Inspection/test operation Push the button. A A 1 Outdoor unit model code display Push the button. Indoor unit type code Display A C E F H J L P L 6 3 Type Wall mounted Double flow Corner Multi flow Ceiling suspended Built-in Floor standing Concealed ceiling duct Concealed floor standing type Multi flow Slim Ceilling mounted duc FXAQ FXCQ FXKQ FXFQ FXHQ FXSQ FXLQ FXMQ FXNQ FXZQ FXDQ Model Test operation Test operation mode Inspection/test operation Push the button. Outdoor model code Display A A 1 A A 3 A 9 2 A A 5 A A A A A C A AE A 9 E Type VRV System Inverter K Series R-407C VRV PLUS Series VRV Heat Recovery Series High COP type R-407C L Series VRV II VRV II M/C Heat Pump Series VRV III Cooling Only Series VRV III Heat Recovery Series Model RSXYP RXYP RSEYP RSXYP-L RXYQ-M RXYQ-MA RXYQ-P RXQ-P REYQ-P (V2775)

178 Normal operation mode Field set mode Service mode Push the button for 4 seconds or longer. Push the button for 4 seconds or longer. (VF020)

179 40 Unit 1 Malfunction code 2-U4 40 Malfunction code (VE007) Hystory No: 1-9 1: Latest 41 Sensor data display Unit No. Sensor type 41 Temperature ºC Address display Unit No. Address type (VE008) Unit 1 Address (VE009) Unit 1 Code Fan speed 1: Low 3: High Air flow direction P0 - P4 (VE010) 45 Unit 1 Code (VE011) Present unit No Unit No. after transfer 46 47

180 Normal operation mode Test run mode Press the CHECK/TEST button 4 times. Operation lamp ON/OFF button Display of indoor unit for which a malfunction has been detected Inspection display Malfunction code (VL050)

181 E

182

183 <Monitor mode> To enter the monitor mode, push the MODE (BS1) button when in Setting mode 1. * Refer to Page 195 for Monitor mode. <Selection of setting item> Push the SET (BS2) button and set the LED display to a setting item. * Refer to Page 195 for Monitor mode. <Confirmation of malfunction 1> Push the RETURN (BS3) button once to display "First digit" of malfunction code. <Confirmation of malfunction 2> Push the SET (BS2) button once to display "Second digit" of malfunction code. <Confirmation of malfunction 3> Push the SET (BS2) button once to display "malfunction location". <Confirmation of malfunction 4> Push the SET (BS2) button once to display "master or slave 1 or slave 2" and "malfunction location". Push the RETURN (BS3) button and switches to the initial status of Monitor mode. Push the MODE (BS1) button and returns to Setting mode 1. Detail description on next page

184 Display of contents of malfunction (first digit) Display of contents of malfunction (second digit) Display 1 of malfunction in detail Display 2 of malfunction in detail

185 <Monitor mode> To enter the monitor mode, push the MODE (BS1) button when in Setting mode 1. * Refer to Page 195 for Monitor mode. <Selection of setting item> Push the SET (BS2) button and set the LED display to a setting item. * Refer to Page 195 for Monitor mode. <Confirmation of malfunction 1> Push the RETURN (BS3) button once to display "First digit" of malfunction code. <Confirmation of malfunction 2> Push the SET (BS2) button once to display "Second digit" of malfunction code. <Confirmation of malfunction 3> Push the SET (BS2) button once to display "malfunction location". <Confirmation of malfunction 4> Push the SET (BS2) button once to display "master or slave 1 or slave 2" and "malfunction location". Detail description on next page Push the RETURN (BS3) button and switches to the initial status of Monitor mode. Push the MODE (BS1) button and returns to Setting mode 1.

186 Display of contents of malfunction (first digit) Display of contents of malfunction (second digit) Display 1 of malfunction in detail Display 2 of malfunction in detail

187 A0 A0 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Extern al protection device is connected to terminals T1 and T2 of the indoor unit terminal block. Actuation of external protection device. ON/OFF input from outside (mode No. 12, first code No. 1) has been set to external protection device input (second code No. 03) by remote control. Change the second code No. to "01" or "02". Indoor unit PC board replacement. (V2776)

188 A1 A1 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn power supply OFF, then power ON again. Does the system return to normal? The indoor unit PC board is normal. External factor other than malfunction (for example, noise etc.). Replace the indoor unit PC board. (V2777)

189 A3 A3

190 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is power supply 220~240V provided? Provide 220~240V power supply. The float switch is connected to X8A of the indoor unit PC board. A short circuit connector is connected to X8A. Connect either a short circuit connector or float switch and turn on again. The float switch contact is forming a short circuit (continuity check with X8A or X15A disconnected) Becomes normal when X8A of the indoor unit PC board is short circuited Defect of indoor unit PC board. Loose connection of connector. Water builds up in the drain pan. The float switch functions normally. Replace float switch. The drain pump is connected to X25A or terminals Y1 and Y2 of the indoor unit PC board. Modify the float switch's connection and turn on again. Connect the drain pump and turn on again. The drain pump works when the power supply is reset for the indoor unit. Check the drain piping for clogging or upward slope, etc. The voltage of terminals Y1 and Y2 or X25A is 220~240 V (within 5 minutes of resetting the power supply). Replace indoor unit PC board. Replace the drain pump or check for dirt, etc. (V2778)

191 A6 A6

192 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn OFF the power supply, and then wait for a period of 10 minutes. Are there any foreign matters around the fan? Remove the foreign matters. Is the connector (X20A) for the fan motor properly connected to the indoor unit PC board? (*1) Properly connect the connector. By disconnecting the connector (X20A) for the fan motor from the indoor unit PC board, the fan can be lightly rotated by hand. Replace the fan motor. Disconnect the connector from the fan motor, and then make measurement of resistance between pins.(*2) Is the resistance between the pins not less than the judgment criteria? Replace the fan motor. *1. If any junction connector is provided between the connector (X20A) on the indoor unit PC board and the fan motor, also check whether or not the junction connector is properly connected. *2. All resistance measuring points and judgment criteria Replace the indoor unit PC board. FXAQ 20~63MAVE 1 White 2 Orange 3 Brown 4 Blue Red FG Vsp Vcc GND Vdc FXFQ 25~125MVE 1 Vdc FG Vsp Vcc GND 2 3 Judgment Criteria Measuring point Criteria FG-GND Not less than 1MΩ Vsp-GND Not less than 100kΩ Vcc-GND Not less than 100Ω Vdc-GND Not less than 100kΩ

193 A6 A6 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Are the X4A and X27A connectors securely connected? Properly connect the connectors. (At this time, check for any faulty connector contact or broken wires.) Is the power of approx. 12VDC supplied between the Pins1 and 3 when the X27A is disconnected and the power supply turns ON? Check the indoor unit fan motor and the wiring circuits of the motor. Replace the indoor unit PC board.

194 A6 A6 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the power supply cable of the indoor unit fan properly connected? Properly connect the cable. Restart the fan. Is the fan normally running? It is supposed that the indoor unit fan motor stops running due to overload, overcurrent, or lock. Replace the indoor unit PC board.

195 A7 A7

196 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is power supply 220~240V provided? Provide 220~240V power supply. Indoor unit is a model equipped with a swing flap function Replace indoor unit PC board. The swing motor works when the power supply is turned off and then back on. The connector is connected to X9A of the indoor unit PC board. Connect the connector to X9A and turn on again. The limit switch functions normally. Replace swing motor. After turning the swing-flap ON and then stopping with the remote control, the voltage of X6A of the indoor unit PC board is 220 ~ 240 VAC (60 Hz) / 220 VAC (50 Hz) when turned on again (within 30 seconds of turning on again). The connecting cable is short-circuited or disconnected. Replace the limit switch connecting cable. Replace indoor unit PC board. The connecting cable has no continuity. Replace the power supply connecting cable. When the air flow direction flap's cam mechanism is disconnected from the swing motor, operation is normal when turned on again. Replace swing motor. Take the cam mechanism apart, reassemble and turn on again. (V2780)

197 A9 A9

198 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. When power is supplied. Replace electronic expansion valve main body. Electronic expansion valve is connected to X7A of indoor unit PC board. Shut the power supply off after connection and then restart. Coil check ( 1) of electronic expansion valve drive indicates normal. Replace coil of electronic expansion valve. Relay cables short circuit or disconnected. Replace relay cables. When restarting the operation after shutting the power supply off does not work, replace indoor unit PC board. 1: How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve (X7A) from PC board. Measure the resistance value between pins and check the continuity to judge the condition. 1) White White (1) Red (5) Orange (3) φ1 φ3 Yellow (2) φ2 M φ4 Brown Blue (6) (4) 2) Yellow 3) Orange 4) Blue 5) Red 6) Brown The normal products will show the following conditions: 1 No continuity between (1) and (2) 2 Resistance value between (1) and (3) is approx. 300 Ω 3 Resistance value between (1) and (5) is approx. 150 Ω 4 Resistance value between (2) and (4) is approx. 300 Ω 5 Resistance value between (2) and (6) is approx. 150 Ω

199 A9 A9

200 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Electronic expansion valve is connected to X7A of indoor unit PC board. Shut the power supply off after connection and then restart. Coil check ( 1) of electronic expansion valve drive indicates normal. Replace coil of electronic expansion valve. Relay cables short circuit or disconnected. Replace relay cables. When restarting the operation after shutting the power supply off does not work, replace indoor unit PC board. 1: How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve (X7A) from PC board. Measure the resistance value between pins and check the continuity to judge the condition. 1) White White (1) Red (5) Orange (3) φ1 φ3 Yellow (2) φ2 M φ4 Brown Blue (6) (4) 2) Yellow 3) Orange 4) Blue 5) Red 6) Brown The normal products will show the following conditions: 1 No continuity between (1) and (2) 2 Resistance value between (1) and (3) is approx. 300 Ω 3 Resistance value between (1) and (5) is approx. 150 Ω 4 Resistance value between (2) and (4) is approx. 300 Ω 5 Resistance value between (2) and (6) is approx. 150 Ω

201 AF AF Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Field drain piping has a defect such as upward sloping. A humidifier unit (optional accessory) is installed on the indoor unit. Modify the drain piping. Check if the humidifier unit is leaking. Defect of indoor unit PC board. (V2782)

202 AJ AJ Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. The indoor unit PC board was replaced with a replacement PC board. Was the capacity setting adapter mounted when replacing the PC board? Replace the indoor unit PC board. Replace the indoor unit PC board. Install a capacity setting adapter. (V2783)

203 C4 C4 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Remove the thermistor from the indoor unit PC board, and then insert it again. Is the thermistor normal? Remove the thermistor from the indoor unit PC board, and then make resistance measurement of the thermistor using a multiple meter. Normal (The malfunction is caused by faulty contact.) 5 kω to 90 kω Replace the thermistor (R2T). Replace the indoor unit PC board.

204 C5 C5 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Remove the thermistor from the indoor unit PC board, and then insert it again. Is the thermistor normal? Remove the thermistor from the indoor unit PC board, and then make resistance measurement of the thermistor using a multiple meter. Normal (The malfunction is caused by faulty contact.) 5 kω to 90 kω Replace the thermistor (R3T). Replace the indoor unit PC board.

205 C9 C9 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Remove the thermistor from the indoor unit PC board, and then insert it again. Is the thermistor normal? Remove the thermistor from the indoor unit PC board, and then make resistance measurement of the thermistor using a multiple meter. Normal (The malfunction is caused by faulty contact.) 5 kω to 90 kω Replace the thermistor (R1T). Replace the indoor unit PC board.

206 CJ CJ Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Clear the malfunction code history. (While in inspection mode, press and hold the ON/OFF button for a period of five seconds or more.) Is "CJ" displayed on the remote control? Replace remote control. External factor other than equipment malfunction. (for example, noise etc.) (V2787)

207 E1 1 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power once and turn on again. Return to normal? External factor other than malfunction (for example, noise etc.). Check if inside / outside relay wires of outdoor main PC board is disconnected. Connect the inside/ outside relay wires correctly. Replace outdoor main PC board (A1P). (V3064)

208 E3 E3

209 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check for the points shown below. 1 Is the stop valve open? 2 Is the HPS connector properly connected to the main PC board? 3 Does the high pressure switch have continuity? Are the three points above OK? Rectify defective points, if any. 1 Mount a pressure gauge on the high-pressure service port. 2 Reset the operation using the remote control, and then restart the operation. Does the stop due to malfunction (E3) recur? Is the HPS operating value normal (i.e., 4.0MPa)? Replace the HPS. Are the characteristics of the high pressure sensor normal? (See 1.) Replace the high pressure sensor. Service Checker Connect the service checker to compare the high pressure value and the actual measurement value by pressure sensor (Refer to 1) by using the service checker. Check if the high pressure value and the actual measurement value by pressure sensor are the same. Replace main PC board ( A1P). The high pressure sensor is normal, and the pressure detected with the PC board is also normal. The high pressure has really become high. CHECK 5 Referring to information on P350, remove the causes by which the high pressure has become high. 1: Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge. (As to the voltage of the pressure sensor, make measurement of voltage at the connector, and then convert it to pressure according to information on P419.) 2: Make measurement of voltage of the pressure sensor. +5V Connector for high pressure sensor (Red) (4) Red Micro controller A/D input (3) (2) (1) Black White High pressure sensor Make measurement of DC voltage between these wires.

210 E4 E4

211 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the stop valve open? Open the stop valve. 1 Mount a pressure gauge on the low-pressure service port. 2 Reset the operation using the remote control, and then restart the operation. Are the characteristics of the low pressure sensor normal? (See 1.) Replace the low pressure sensor. Service Checker Connect the service checker to compare the low pressure value and the actual measurement value by pressure sensor (Refer to 1) by using the service checker. Check if the low pressure value and the actual measurement value by pressure sensor are the same. Replace main PC board (A1P). The low pressure sensor is normal, and the pressure detected with the PC board is also normal. The low pressure has really become low. CHECK 6 Referring to information on P351, remove the causes by which the low pressure has become low. 1: Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge. (As to the voltage of the pressure sensor, make measurement of voltage at the connector, and then convert it to pressure according to information on P419.) 2: Make measurement of voltage of the pressure sensor. +5V Connector for low pressure sensor (Blue) (4) Red Micro controller A/D input (3) (2) Black White Low pressure sensor (1) Make measurement of DC voltage between these wires.

212 E5 E5

213 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open. Check if the relay wires to the compressor are correct. Local factor Open the stop valve. Replace the connecting wires and ensure right connection of the connector. Power OFF Check if the connection of UVW phase order is correct. Check if the wiring is the same as in the electric wiring diagram. The insulation resistance of the compressor is low (not more than 100kΩ). Check if the wiring has any error in mistake for inverter compressor. Ensure correct connection. W U V Ensure correct connection. Replace the compressor. Power ON The compressor coil has disconnection of wires. Restart and check the operation. Check if the condition occurs again. Check if the start mode is in the high differential pressure (not less than 0.5 MPa). Remove the connection between the compressor and inverter. Set the power transistor check mode ON using Setting mode 2 of the outdoor unit PC board. Measure the inverter output voltage ( 2). Note: Measurement should be made while the frequency is stable. Conclude the work There is a possibility of defect of pressure equalizing. Check the refrigerant circuit. Defect of pressure equalizing Check the refrigerant circuit. Check if the inverter output voltage between 3 phases is within ± 5V. Replace the inverter PC board. Replace the inverter compressor. 1: Pressure difference between high pressure and low pressure before starting. 2: The quality of power transistors/ diode modules can be judged by executing Check 4 (P349).

214 E6 E6 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the stop valve open? Open the stop valve. Obstacle exists around the air outlet. Is the power supply voltage normal? Remove the obstacle. Correct the power voltage. Is the magnetic switch (K2M, K3M) normal? ( 1) Check the wiring from power supply ~ current sensor (A6P, A7P) ~ MgS (K2M, K3M) ~ compressor Replace the magnetic switch. Is above wiring correct? Correct wiring. Is current sensor correct? 1 Replace the corresponding current sensor (A6P or A7P). Replace compressor. (V3051)

215 E7 E7

216 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check in the monitor mode 12HP ~18HP class models have 2 fans. Check electric motor (electric motor 1 or 2) corresponding to malfunction code E7 in the monitor mode of outdoor unit PC board. (Refer to P226 - P227 for how to check) Cut the power supply OFF and wait for 10 minutes. Check if any foreign substances around the fan. Remove the foreign substances. Check the connection status of the connectors Fan motor 1: relay connector or X1A, X2A of compressor inverter PC board. Fan motor 2: relay connector or X1A, X2A of fan inverter PC board. Check if any connector is disconnected. Insert the connector. Check the color of relay connectors Fan motor 1: Both power supply wire and signal wire are all white. Fan motor 2: Both power supply wire and signal wire are red in the PC board side and white in the motor side. Relay connectors have any connection error. A Correct the connection of the relay connectors. 5HP ~ 8HP 12HP ~ 18HP

217 A No continuity of fuse (FIU) on the fan inverter PC board. Unable to rotate the fan manually with ease when removing the connector of the fan motor. Replace fan inverter PC board. Replace the corresponding fan motor. Resistance value between the power supply wire terminal of fan motor and the motor frame (metal) is 1MΩ and below. Replace the corresponding fan motor. Check 1 (Referring to the information on P347) Check fan motor connector (power supply wire) The resistance value between UVW phases of fan motor is out of balance, or short circuit between UVW phases. Replace the corresponding fan motor. Check 2 (Referring to the information on P347) Check fan motor connector (signal wire) The signal wire short circuits between Vcc and GND and between UVW and GND. Replace the corresponding fan motor. Put the power supply ON to check the following LED lamps. 1) HAP lamp on the compressor PC board (A2P) 2) HAP lamp on the fan inverter PC board (A5P) HAP lamp for the A5P does not blink on the condition that HAP lamp for A2P is blinking. Replace fan inverter PC board. Replace fan motor 2.

218 E9 E9

219 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn power supply off, and turn power supply on again. Return to normal? External factor other than malfunction (for example, noise etc.). Check the electronic expansion valve corresponding to the malfunction code E9 in the monitor mode. (Refer to P226~227 for how to check.) When Check 4 shows as follows: Electronic expansion valve for main use (Y1E, Y3E for Single, Y1E for Multi) When Check 4 shows as follows: Electronic expansion valve for refrigerant charge (Y4E for Single, Y2E for Multi) When Check 4 shows as follows: Electronic expansion valve for subcooling (Y2E, Y5E for Single, Y3E for Multi) Explanation of Master unit Slave unit 1 Slave unit 2 System The connector of outdoor unit PC board (A1P) for electronic expansion valve is connected. Ensure correct connection. The coil resistance of electronic expansion valve isnormal. (Refer to 1) Replace the connecting cable. Replace outdoor unit PC board (A1P). (V3067) Make measurement of resistance between the connector pins, and then make sure the resistance falls in the range of 40 to 50Ω. (Orange) 1 (Red) 2 (Yellow) 3 (Black) 4 5 COM[+] (Gray) 6 Measuring points Judgment criteria 40~50Ω (V3067)

220 F3 F3

221 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Connect the service checker. Press reset and start operation again. Check if discharge pipe thermister property is normal. ( 1) Replace discharge pipe thermister. Service Checker Connect the service checker to compare the temperature of discharge pipe by using service checker with actual measurement value of discharge pipe thermister (Refer to 1). Check if temperature of discharge pipe by using service checker is the same with actual measurement value of discharge pipe thermister. Replace main PC board ( A1P). Discharge pipe thermister is normal and the temperature detection of the main PC board is also normal. Actually the temperature of discharge pipe is high. Check 3 Remove the factor of overheat operation referring to P348. 1: Compare the resistance value of discharge pipe thermister and the value based on the surface thermometer. (Refer to P417 for the temperature of thermister and the resistance property)

222 F6 F6 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the mounting condition of the temperature sensors of the outside air thermistor, heat exchanging deicer thermistor and liquid pipe thermistor in the piping. Are the above thermistor installed on pipes correctly? Install thermistor correctly. Remove the outside air thermistor, heat exchanging deicer thermister and the liquid pipe thermistor from the outdoor PC board and measure resistance with a tester. Is the characteristic of the above thermistor normal? Replace thermistor. Refrigerant overcharged. (V2797)

223 F9 F9

224 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn OFF the power supply once and then ON again. Does the power supply normally come back ON? Probe any external causes other than failures (e.g. noises). While in monitor mode, identify an electronic expansion valve subject to the Malfunction Code "F9". (For checking procedure, refer to information on P226~227.) When Check 4 is set as shown below: Check 3 Check 4 Electronic expansion valve (Y4E) Electronic expansion valve (Y5E) Electronic expansion valve (Y2E) Electronic expansion valve (Y3E) Electronic expansion valve (Y1E) Is the connector for the electronic expansion valve of the PC board concerned properly connected? Is the resistance of the electronic expansion valve coil normal? (See *1) Properly and securely connect the connector. Replace the electronic expansion valve coil concerned. Replace the BS unit PC board. *1: Procedure for checking the electronic expansion valve for the drive unit coil. Disconnect the electronic expansion valve connector (X7A) from the PC board, and then make measurement of resistance and check for continuity between the connector pins to make judgment. (1) White [COM] White (1) Red (5) Orange (3) φ1 φ3 φ2 M φ4 (2) Yellow (3) Orange (4) Blue Yellow (2) Brown Blue (6) (4) [COM] (5) Red (6) Brown The normal states are as follows: 1 No continuity between Pins (1) and (2) 2 Approx. 300Ω resistance between Pins (1) and (3) 3 Approx. 150Ω resistance between Pins (1) and (5) 4 Approx. 300Ω resistance between Pins (2) and (4) 5 Approx. 150Ω resistance between Pins (2) and (6)

225 H7 H7

226 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the fan motor corresponding to the malfunction code H7 in the monitor mode. (Refer to P226~227 for how to check) When check 3 shows as follows:? Fan motor 1 (M1F) When check 3 shows as follows:? Fan motor 2 (M2F) Identify outdoor unit based on Check 4. Explanation for Master unit Slave unit 1 Slave unit 2 System Cut the power supply off. Check if signal wire connector for the corresponding fan motor is normal. Check the connector of the fan motor (*1). Ensure correct connection. Check if the resistance of the fan motor lead wire between Vcc and UVW and between GND and UVW are balanced. Replace fan motor. *1. Check procedure for fan motor connector (1) Power OFF the fan motor. (2) Remove the connector (X2A or X4A) on the PC board to measure the following resistance value. Judgment criteria: resistance value between each phase is within ±20% Replace inverter PC board. For fan motor 1: replace inverter PC board (A2P) For fan motor 2: replace fan inverter PC board (A5P) Connector for signal wires (X2A or X4A) X2A 5 Gray GND 4 Pink 3 Orange Vcc W Measure the resistance between Vcc-UVW and GND-UVW. 2 Blue V 1 Yellow U (V2799)

227 H9 H9 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Connector is connected to X18A of outdoor PC board (A1P). Connect the connector and turn on again. Resistance is normal when measured after disconnecting the thermistor (R1T) from the outdoor unit PC board. (1.8kΩ to 800kΩ) Replace the thermistor (R1T) Replace outdoor unit PC board (A1P). (V3070)

228 J2 J2 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the current sensor corresponding to the malfunction code J2 in the monitor mode. (Refer to P226~227 for how to check) Check 4 shows as follows: Current sensor for constant rate compressor 1 Check 4 shows as follows: Current sensor for constant rate compressor 2 Explanation for Master unit Slave unit 1 Slave unit 2 System Is the connector for current sensor connected to X25A, X26A on outdoor unit PC board (A1P)? Connect the connector, and operate unit again. Are the current sensors inversely connected to two STD compressors? Applicable compressor coil wire is broken. Is the current sensor mounted on the T-phase (A6P) and R-phase (A8P) wire? Correct the connections between the current sensors and the STD compressors. Replace compressor. Mount the current sensor correctly, and operate unit again. Replace current sensor or outdoor unit PC board. (V3071)

229 J3 J3 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which discharge thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Connector is connected to X29A of outdoor unit PC board (A1P). Connect the connector and turn on again. Resistance is normal when measured after disconnecting the thermistor R31, 32T or R33T from the outdoor unit PC board. (2.5kΩ to 1.3kΩ) Replace the thermistor (R31, 32T or R33T) Replace outdoor unit PC board (A1P). (V3072)

230 J4 J4 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Connector is connected to X30A of outdoor PC board (A1P). Connect the connector and turn on again. Resistance is normal when measured after disconnecting the thermistor (R2T or R11T) from the outdoor unit PC board. (1.8kΩ to 800kΩ) Replace the thermistor (R2T or R11T) Replace outdoor unit PC board (A1P). (V3070)

231 J5 J5 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which discharge thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Connector is connected to X30A, of outdoor unit PC board.(a1p) Connect the connector and turn on again. Resistance is normal when measured after disconnecting the thermistor (R8T or R10T) from the outdoor unit PC board. (1.8kΩ to 800kΩ) Replace the thermistor R8T or R10T. Replace outdoor unit PC board (A1P). (V3073)

232 J6 J6 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Connector is connected to X30A of outdoor unit PC board (A1P). Connect the connector and turn on again. Resistance is normal when measured after disconnecting the thermistor R4T or R12T from the indoor unit PC board. (1.8kΩ to 800kΩ) Replace the thermistor R4T or R12T. Replace outdoor unit PC board (A1P). (V3074)

233 J7 J7 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Is the connector for liquid pipe thermistor connected to X30A on outdoor unit PC board (A1P)? Connect the connector and operate unit again. Is the resistance measured after removing the thermistor (R6T) (R9T) or (R14T) from outdoor unit PC board normal? (1.8kΩ to 800kΩ) Replace thermistor (R6T) (R9T) or (R14T). Replace outdoor unit PC board (A1P). (V3075)

234 J8 J8 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Is the connector for liquid pipe thermistor connected to X30A on outdoor unit PC board (A1P)? Connect the connector and operate unit again. Is the resistance measured after removing the thermistor (R7T or R15T) from outdoor unit PC board normal? (1.8kΩ to 800kΩ) Replace thermistor (R7T or R15T). Replace outdoor unit PC board (A1P). (V3075)

235 J9 J9 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227) Is the connector for subcooling heat exchanger gas pipe thermistor connected to X30A on outdoor unit PC board (A1P)? Is the resistance measured after removing the thermistor(r5t or R13T) from outdoor unit PC board normal?(1.8kω to 800kΩ) Connect the connector and operate unit again. Replace thermistor (R5T or R13T). Replace outdoor unit PC board (A1P). (V3075)

236 JA JA

237 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which high pressure sensor is abnormal using outdoor unit "monitor mode". (Refer to page 226~227) 1.Set the high pressure gauge upright. 2.Connect the checker for VRV to the gauge. Are the characteristics of the high pressure sensor normal? (Make a comparison between the voltage characteristics ( 2) and the gauge pressure.) If the PC board pressure detection normal? (Make a comparison between the checker pressure data and the voltage characteristics ( 2). Reset the operation, and then restart the outdoor unit. Replace the high pressure sensor. Replace the main PC board. Are the characteristics of the high pressure sensor normal? Replace the high pressure sensor. Replace the main PC board. 1: Pressure sensor subject to malfunction code Malfunction code JA Pressure sensor subject to malfunction code High pressure sensor Electric symbol S1NPH (V2806) Outside unit PC board A2P +5V X32A Microcomputer A/D input GND Red Black White Low pressure sensor *2 Measure DC voltage here. (V2807)

238 JC JC Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which low pressure sensor is abnormal using outdoor unit "monitor mode". (Refer to Page 226~227) 1.Set the low pressure gauge upright. 2.Connect the checker for VRV to the gauge. Are the characteristics of the low pressure sensor normal? (Make a comparison between the voltage characteristics ( 1) and the gauge pressure.) If the PC board pressure detection normal? (Make a comparison between the checker pressure data and the voltage characteristics ( 1). Reset the operation, and then restart the outdoor unit. Replace the low pressure sensor. Replace the main PC board. Are the characteristics of the low pressure sensor normal? Replace the low pressure sensor. Replace the main PC board. (V2808)

239 Outside unit PC board A2P +5V X31A GND Microcomputer A/D input Red Black White Low pressure sensor *2 Measure DC voltage here. (V2809)

240 L1 L1

241 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn OFF the power supply once, and then check the compressor lead wires. Do the lead wires have any disconnection, broken wire, short circuit, or ground fault? Replace the lead wires. Turn ON the power supply again. Does the power supply normally come back ON? It is supposed that the malfunction results from external causes other than failures (e.g. exogenous noises or thunder). Single system While in monitor mode, check whether the system is righthand (control PC board 1) or left-hand (control PC board 3). Is the single system applied to the outdoor unit? Multi system While in monitor mode, check the outdoor unit concerned. Check 4 Check if the power transistor is normal. Check 4 Check if the power transistor of the fan driver is normal. Check 4 Check if insulation resistance of the compressor is 100kΩ and above. : Referring to the information on P349. Replace the compressor and compressor inverter PC board (A2P) at the same time. Replace the inverter PC board (A2P). Replace the compressor inverter PC board (A2P) and fan inverter PC board (A5P). Replace the inverter PC board (A2P).

242 L4 L4

243 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Single system While in monitor mode, check whether the system is right-hand (control PC board 1) or left-hand (control PC board 3). Is the single system applied to the outdoor unit? Multi system While in monitor mode, check the outdoor unit concerned. The radiation fin of the inverter PC board concerned exceeded a temperature of 87 C. Turn OFF the power supply, and then make measurement of resistance of the radiation fin thermistor. Faulty radiation from the power unit Blocked air suction port Stained radiation fin High outdoor temperature Is the thermistor resistance normal? Replace the thermistor. Connect and disconnect the connector (X111A) for the fin thermistor, and then properly connect it. Does the malfunction recur when the power supply turns ON to start the compressor? Replace the compressor inverter PC board. Continue operation. It is supposed that the radiation fin temperature became high due to some field factors. In this connection, check the following points: Stained radiation fin Air flow obstructed with dirt or foreign matters Damage to fan impellers Too high outdoor temperature

244 XIII: EH CONNECTOR WHITE

245 L5 L5

246 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open. Open the stop valve. Check if the compressor lead wires are normal. Replace compressor lead wires. Power OFF Check if the wiring and connection to the compressorare normal. Insulation resistance of the compressor is 100 kω or below. Correct the wiring and connection. Replace inverter compressor. Compressor coils are disconnected. Replace inverter compressor. Check 4 Check if the power transistor is normal. Replace inverter PC board (A2P). Failure occurs again after restarting the unit. Continue operation. Momentary power failure is possible. ( Replace inverter compressor. ( Check 4 : Referring to the information on P349.

247 L8 L8

248 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open. Open the stop valve. Check if the compressor lead wires are normal. Replace compressor lead wires. Check if the wiring and connection to the compressor are normal. Correct the wiring and connection. Power OFF Insulation resistance of the compressor is 100 kω or below. Replace inverter compressor. Compressor coils are disconnected. Replace inverter compressor. Check 4 Check if the power transistor is normal. Replace inverter PC board (A2P). Connect the compressor lead wires then restart the operation. Malfunction code L8 is displayed again. Continue operation. Check if the pressure difference between high pressure and low pressure before restarting is 0.2MPa or below. Defective pressure equalizing in the refrigerant circuit. Check 4 : Referring to the information on P349. Inspection of the compressor.

249 L9 L9

250 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Single system While in monitor mode, check whether the system is right-hand (control PC board 1) or left-hand (control PC board 3). Is the single system applied to the outdoor unit? Multi system While in monitor mode, check the outdoor unit concerned. Check if it is the first time to start after installation. Go on to the next page. ( Starting failure due to aged operation.) Check if a right amount of refrigerant is charged. Charge a right amount of refrigerant. Check if the stop valve is open. Open the stop valve. Refrigerant is sleeping. ( The unit is out of power supply for more than 6 hours.) Cancel the sleeping state of refrigerant. Check if the insulation resistance of the compressor is more than 100kΩ. Cancel the sleeping state of refrigerant. Check if the compressor lead wires are disconnected. Fix the compressor lead wire. Correct the wiring then supply power to restart.

251 Continued from the previous page. (Start failure due to aged operation.) Refrigerant is sleeping. ( The unit is out of power supply for more than 6 hours.) Cancel the sleeping state of refrigerant. Check if the insulation resistance of the compressor is 100kΩ or over. Replace the inverter compressor. Broken inside the compressor Replace the inverter compressor. Check 4 Check if the power transistor is normal. Replace the compressor inverter PC board. Check 4 : Referring to the information on P349. Recheck the compressor/ refrigerant circuit.

252 LC LC

253 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Was the PC board (A1P) replaced with a spare PC board? Does the model setting of the substitute PC board match the system? Make correct model setting. (For setting procedure, refer to information on P184~.) Are the connectors of the inverter PC board, main PC board, and sub PC board all securely connected? Properly connect the connectors. Is the type of the inverter PC board correct?(*1) Replace it with a correct PC board. The INV compressor has insulation resistance of not more than 100kΩ. Replace the compressor (M1C). The fan motor has insulation resistance of not more than 1MΩ. Replace the fan motor. A

254 A The fuse F400U of the A3P has been molten down. Replace the noise filter of the A3P. Disconnect the sensor connector (X2A or X4A) from the fan motor, and then turn ON the power supply. Is any malfunction code other than "LC" displayed? The microcomputer normal monitor (green) of the main PC board (A1P)is blinking. The microcomputer normal monitor (green) of the main PC board (A4P) is blinking. The LC malfunction recurs. Take countermeasures following the displayed malfunction code. Not the LC malfunction. Check the malfunction code again. Replace the inverter PC board (A4P). * If the replaced PC board has significant damage, the compressor is probably get faulty. In this case, carry out inspections on the compressor again. Replace the main PC board (A1P). Continue operation. (It is supposed that the malfunction results from causes such as instantaneous power failure.) F400U

255 P1 P1

256 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Imbalance in supplied voltage is in excess of 14 V (Y1). 1 Open phase? Open phase Normalize field cause. Fix power supply voltage imbalance. Is the voltage imbalance applied to the inverter in excess of 14 V (Y1)? 2 <When voltage monitoring is possible:> Using a device capable of constant recording of power supply voltage record power supply voltage between 3 phases (L1 ~ L2, L2 ~ L3, L3~L1) for about one continuous week. Part or wiring defect After turning the power supply OFF, check and repair the main circuit wiring or parts. (1) Loose or disconnected wiring between power supply and inverter (2) K2 contact disposition, fusion or contact is poor. (3) Loose or disconnected noise filter 1. Measure voltage at the X1M power supply terminal block. 2. Measure voltage at connector X10A (RED, WHITE and BLACK wire pins) of the diode module inside the inverter while the compressor is running. No abnormalities are observed in the power supply, but the imbalance in voltage recurs. Power supply voltage imbalance Even if the power supply voltage is not unbalanced when measuring it, there are many cases where it gets unbalanced during nighttime (around 6:00PM to 10:00PM). measure Replace the inverter PC board. Explanation for users In accordance with "notification of inspection results" accompanying spare parts. Give the user a copy of "notification of inspection results"and leave it up to him to improve the imbalance. Be sure to explain to the user that there is a "power supply imbalance" for which DAIKIN is not responsible. (V2816)

257 P4 P4 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Measure resistance value of the radiation fin thermistor. * * Disconnect the connector (X111A) from the fin thermistor, and then check the thermistor. Is the thermistor resistance value normal? Replace the inverter PC board. The INV compressor's insulation resistance is not more than 100kΩ. The fan motor's insulation resistance is not more than 1MΩ. Replace the compressor (M1C). Replace the fan motor. Does the malfunction recur when the power supply turns ON? Replace the inverter PC board. Continue operation.

258 XIII: EH CONNECTOR WHITE

259 PJ PJ

260 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Was the PC board (A1P) replaced with a substitute PC board? Is the model setting of the substitute PC board correct? Make correct setting of DIP switch. (For setting procedure, refer to information on page 184~.) Is the type of the compressor inverter PC board correct? (*1) Is the type of the fan inverter PC board correct? (*2) Replace it with the correct compressor inverter PC board. Replace it with the correct fan inverter PC board. Does the Preparation indication lamp on the main PC borad turn OFF? Rectify the connection wiring. Replace outdoor unit PC board. With single systems, replace the control PC board 1 (A1P) or the control PC board 3 (A3P). With multi systems, replace the main PC board (A1P).

261 U0 U0

262 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. In cooling mode 1 Set up a pressure gauge at the service port on the low pressure side. 2 Reset the operation using the remote controller then restart. Check if the low pressure is 0.1MPa or below. ( 1) Check if the property of low pressure sensor is normal.( 2) Replace the low pressure sensor. 1: Check the low pressure value by using pressure gauge in operation. 2: Compare the actual measurement value by pressure sensor with the value by the pressure gauge. (To gain actual measurement value by pressure sensor, measure the voltage at the connector [between (2)-(3)] and then convert the value into pressure referring to P419.) Replace the main PC board (A1P). Remove the factor of decreasing low pressure by referring to Check 6. 1 In heating mode Reset the operation using the remote control then restart. Check if the temperature difference between the suction pipe and the heat exchanger is 20 C and over. Check if the property of suction pipe thermister (A7T) and heat exchanger thermister (R4T) are normal. (*3) Replace the thermister. 3: Compare the thermister resistance value with the value on the surface thermometer. 1 Check 6 : Referring to the information on P351. Replace the main PC board. With individual systems, replace the control PC board 1 (A1P) or the control PC board 3 (A3P). With multi systems, replace the main PC board (A1P). Remove the factor of superheating by referring to Check Check 3 : Referring to the information on P348.

263 U1 U1 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. There is an open phase at the power supply terminal section (X1M) of the outdoor unit. Operation is normal if one place of power supply line phase is replaced. Fix the open phase. Requires inspection of field power supply section. Reverse phase Counter measure of the problem is completed by phase replacement. Replace outdoor unit PC board (A1P). With single systems, replace the control PC board 1 (A1P) or the control PC board 3 (A3P). With multi systems, replace the main PC board (A1P). (V2820)

264 U2 U2

265 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Power ON Power OFF Check for power supply voltage. Voltage between phases: 380 to 415V Phase voltage: 220 to 240V Unbalanced power supply? (Not more than 2%: Phase voltage of not more than approx. 5V) Disconnect the cable from the compressor, and then check the compressor for the insulation resistance. The insulation resistance is low (i.e., not more than 100kΩ.) Disconnect the cable from the fan, and then check the fan motor for the insulation resistance. The insulation resistance is low (i.e., not more than 1MΩ.) Check the inverter power transistor. On-site causes. Make proper wire connections without open phase, erroneous connections, or erroneous order of phases. On-site causes Correct the unbalanced loads to eliminate the unbalanced state. Unbalanced voltage will cause extremely unbalanced current, thus impairing the service life of or resulting in the malfunction of the equipment. Replace the compressor. Replace the fan motor. Replace the fan driver. Has the power transistor got faulty? Check the fan driver power transistor. Has the power transistor got faulty? A Replace the inverter PC board. Observe the conditions of the PC board. In the case of a serious failure, a compressor failure may cause the failure of the PC board. Even if the PC board is replaced, it may cause failure again. To avoid that, recheck the compressor for ground and for any broken wires. Furthermore, even after the completion of PC board replacement, check the compressor. Replace the fan driver PC board. Observe the conditions of the PC board.

266 Power OFF A <Multi> Check for connector connections: Remove and insert the connectors shown below. Furthermore, check the connectors for terminal conditions and continuity. X1M power receiving terminal X400A A3P A3P X401A X10A A4P A1P X28A X6A A4P A4P X61A X402A A3P A4P X1A X403A A3P A4P P1,P2 Reactor terminal L1R A4P P3,N3 P1,N1 A5P A5P P2,N2 P1,N1 A7P <Single> Check for connector connections: Remove and insert the connectors shown below. Furthermore, check the connectors for terminal conditions and continuity. X1M power receiving terminal X400A A3P A4P or A7P X401A X10A A5P or A8P A1P or A3P X28A X6A A5P or A8P A5P or A8P X61A X402A A4P or A7P A5P or A8P X1A X403A A4P or A7P A5P or A8P P1,P2 Reactor terminal L1R A5P or A8P P3,N3 P1,N1 A5P A6P P2,N2 P1,N1 A7P Has the inverter PC board caused damage? Single : A5P, A8P Multi : A4P Replace the inverter PC board. If the PC board replaced is badly damaged, the compressor is likely to get faulty. To make sure, recheck the compressor. Has the fan driver caused damage? Single : A6P, A7P or A9P Multi : A5P/A7P Replace the fan driver PC board. If the PC board replaced is badly damaged, the fan motor is likely to get faulty. To make sure, recheck the compressor. Turn ON the power supply. Stop (standby) before the fan rotates. Recheck for the power supply. If there is no problem with the power supply, replace the A4P, A7P or A3P noise filter PC board. If the malfunction recurs, replace the inverter PC board. Power ON Stop (standby) when the compressor starts up. The U2 malfunction recurs. Recheck for the power supply. If there is no problem with the power supply, replace the A5P, A8P or A4P inverter PC board. If the PC board replaced is badly damaged, compressor is likely to get faulty. To make sure, recheck the compressor. Check the harness, and then replace it if necessary. End of measures: The malfunction may temporarily result from on-site causes. Causes: Instantaneous power failure (open phase), noises, or else.

267 U3 U3 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Has the check operation performed on Outdoor unit PC board? Press and hold BS4 on the outdoor master PC board for 5 seconds or more, or turn ON the local setting mode 2-3 to conduct a check operation. Performs the check operation again and completes the check operation. When a leakage detection function is needed, normal operation of charging refrigerant must be completed. And then, start once again and complete a check operation. (V3052)

268 U4 U4

269 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the detailed malfunction status in the monitor mode. (Refer to P226~227 for how to check.) In Check 4, LED lamp indicates as follows: Go on to the next page. LED lamp display ( ) Check if indoor unit PC board or outdoor unit PC board has been replaced. Or check if indoor/ outdoor, outdoor/ outdoor connecting wires are normal. Check if all the indoor remote controls within the same refrigerant circuit display U4. Check if the indoor/ outdoor, outdoor/ outdoor connecting wires are normal. Press the rewiring button on the main PC board of the master outdoor unit. Keep pressing for 5 seconds or more. (Operation does not start for a maximum 12 minutes.) Replace indoor unit PC board. Reset the power supply here. Correct the connecting wires. Check if the normal condition monitor for the microcomputer (HAP) on the outdoor unit PC board blinks. Check if the voltage between RS terminals on the outdoor unit PC board is 200V. Correct the voltage (200V). Check if the LED in preparation mode (H2P) on the outdoor unit PC board blink. Lights do not go out for 12 minutes or more. The fuse on the outdoor unit PC board is blown. Replace the fuse. Replace the outdoor unit PC board. Press the rewiring button on the main PC board of the outdoor unit. Keep pressing for 5 seconds or more. Check if the indoor/ outdoor, outdoor/ outdoor connecting wires are normal. Correct the connecting wires. Check if the operation is normal with 1 circuit after outdoor/outdoor connecting wires are removed. Replace the main PC board of outdoor unit. Fix DIII Net extension adapter.

270 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. indicates as follows: ( ) Continued from the previous page In Check 4, LED lamp Start operation of all the indoor units. Check if all the units indicate U9. Continue operation. Check if more than 2 minutes passed since U9 was indicated. Make a diagnosis again based on the indication in 2 minutes and over. The indoor units PC board indicating U9 are normal. Check the indoor units in the other circuits to diagnose failure according to the corresponding malfunction codes.

271 U5 U5 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Using 2 remote controls control. SS1 of both remote controls is set to "MAIN." Set one remote control to "SUB"; turn the power supply off once and then back on. All indoor PC board microcomputer monitors blink. Operation returns to normal when the power is turned off momentarily. Replace indoor unit PC board. Replace the remote control Normal There is possibility of malfunction caused by noise. Check the surrounding area and turn on again. Normal Replace the indoor unit PC board. Normal Normal There is possibility of malfunction caused by noise. Check the surrounding area and turn on again. (V2823)

272 U7 U7

273 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the LED lamps for Check 3 corresponding to the malfunction code U7 and for Check 4 in the monitor mode. (Refer to P228~229 for how to check) Check 3 Check 3 Check 3 Check 3 Check 3 Check 4 Check 4 Check 4 Check 4 Check 4 Go on to the Diagnosis Flow 1 (Faulty transmission caused when the external control adapter for outdoor unit is mounted) Go on to the Diagnosis Flow 2 (Transmission alarm given when the external control adapter for outdoor unit is mounted) Go on to the Diagnosis Flow 3 (Abnormal transmission between the master unit and the slave unit 1) Go on to the Diagnosis Flow 4 (Abnormal transmission between the master unit and the slave unit 2) Go on to the Diagnosis Flow 5 (Multi-connection REYQ units) Check 3 Check 3 Check 3 Check 4 Check 4 Check 4 Go on to the Diagnosis Flow 6 (Erroneous manual address settings of the slave units 1 and 2) Go on to the Diagnosis Flow 7 (Connection of four or more outdoor units to the same circuit) Go on to the Diagnosis Flow 8 (Faulty auto address of the slave units 1 and 2)

274 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 1 Check 3 Check 4 Check if any disconnection or connection error is detected in connecting wires with outside control adapter. Correct the connecting wiring with the outside control adapter. Check if the normal condition monitor LED for the outdoor unit PC board blinks. Check if power is supplied to the outdoor units. Supply power to the outdoor unit. Replace the outdoor unit main PC board. Check if the normal condition monitor LED for the outside control adapter blinks. Check if the power supply wire for the outside control adapter is connected to 5V supply line. Connect the power supply wire for the outside control adapter to 5V supply line. Replace the PC board of the outside control adapter. Replace the outdoor unit main PC board.

275 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 2 Check 3 Check 4 Switch cooling/heating in a lump. Set the cooling/heating switch of the external control adapter for outdoor unit to individual. Setting of cooling/heating switch for the external control adapter for outdoor unit is Master in a lump. The integrated addresses for cooling/heating within the outdoor/outdoor transmission are duplicated. Set the address again. Setting of cooling/heating switch for the external control adapter for outdoor unit is Slave in a lump. Replace the main PC board of the outdoor unit. Check if the normal condition monitor LED for the outdoor unit main PC board blinks. Check if the outdoor unit is powered on. Supply power to the outdoor unit. Check if the normal condition monitor LED for the external control adapter for outdoor unit blinks. Check if the power supply wire for the external control adapter for outdoor unit is connected to 5V supply line. Replace the main PC board of the outdoor unit. Connect the power supply wire for the external control adapter for outdoor unit to 5V supply line. Set the cooling/heating switch of the external control adapter for outdoor unit to individual. Then check if the failure occurs again. Replace the PC board of the external control adapter for outdoor unit. Replace the main PC board of the outdoor unit.

276 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check 3 Diagnosis Flow 3 Check 4 Check the connection status of connecting wires of Multi Slave 1 with outdoor multi.check if the wiring is disconnected or is about to be disconnected. Correct the connecting wires of the outdoor multi and then reset the power supply. Replace the outdoor unit main PC board of the Multi Slave 1. Check 3 Diagnosis Flow 4 Check 4 Check the connection status of connecting wires of Multi Slave 2 with outdoor multi. Check if the wiring is disconnected or is about to be disconnected. Correct the connecting wires of the outdoor multi and then reset the power supply. Replace the outdoor unit main PC board of the Multi Slave 2. Diagnosis Flow 5 Check 3 Check 4 Check if the outdoor unit REYQ8~16PY1 is connected to multi-system. Remove the connecting wires of the outdoor multi and then reset the power supply. Replace the main PC board of the outdoor unit.

277 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check 3 Diagnosis Flow 6 Check 4 Are manual address settings (of the slave units 1 and 2) correct in order to connect the AirNet? Correct the manual address settings. (For detail, refer to information in the "AirNet Installation Manual".) Check the connection status of one of the connecting wires of Outdoor Multi. Check if the wiring is broken or disconnected. Correct the connecting wires of the outdoor multi and then reset the power supply. Replace the main PC board of the outdoor unit. Check 3 Diagnosis Flow 7 Check 4 In the connection status of the outdoor multi, check if more than 4 outdoor units are connected. Correct the connecting wires of the outdoor multi and then reset the power supply. Replace the main PC board of the outdoor unit. Diagnosis Flow 8 Check 3 Check 4 Check the connection status of the connecting wires of outdoor multi. Check if the wiring has any connection error or broken, or is about to be disconnected. Correct the connecting wires of the outdoor multi and then reset the power supply. Replace the main PC board of the outdoor unit.

278 U8 U8 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Using 2-remote controls control. SS1 of remote control PC boards is set to "MAIN." Set SS1 to "MAIN"; the power supply off once and then back on. SS1 of both remote controls is set to "SUB." Turn the power off and then back on. If a malfunction occurs, replace the remote control PC board. Set one remote control to "MAIN"; the power supply off once and then back on. (V2825)

279 U9 U9 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn on all indoor units. All the units are indicating U9. Continue operation. U9 has been displayed for 2 minutes or more. Re-diagnose by display after passage of 2 minutes or more. The outdoor unit PC board indicated by the malfunction code U9 is normal. Check for the indoor unit of other system, and then conduct troubleshooting by diagnosis according to the Malfunction Code Flowchart.

280 UA UA

281 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the LED lamps for Check 3 corresponding to the malfunction code UA and for Check 4 in the monitor mode. (Refer to P228~229 for how to check.) Check 3 Check 4 Check 3 Check 4 Check 3 Check 4 Check 3 Check 4 Check 3 Check 4 Check 3 Check 4 Check 3 Check 4 To Diagnosis Flow 1 (Excessive number of indoor units connected) To Diagnosis Flow 2 (Connection of erroneous models of indoor units) To Diagnosis Flow 3 (Faulty combination of outdoor units) To Diagnosis Flow 4 (Faulty wiring in units dedicated to multi connections) To Diagnosis Flow 5 (Connection of erroneous models of BS units) To Diagnosis Flow 6 (Faulty wiring between outdoor units and BS units) To Diagnosis Flow 7 (Faulty wiring between BS units) Check 3 Check 4 To Diagnosis Flow 8 (Faulty wiring between indoor units and BS units)

282 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 1 Check 3 Check 4 The number of indoor units connected to the same refrigerant circurt system should not be more than 64 units. Replace the main PC board of the outdoor unit. With single systems, replace the control PC board 1 (A1P) or the control PC board 3 (A3P). With multi systems, replace the main PC board (A1P). Diagnosis Flow 2 Check 3 Check 4 The number of indoor units exceeds the standard. Check the connection to correct. Check if the refrigerant type of the outdoor unit corresponds to that of the indoor unit. Replace the main PC board of the outdoor unit. With single systems, replace the control PC board 1 (A1P). With multi systems, replace the main PC board (A1P). Match the refrigerant types of the outdoor unit and the indoor unit.

283 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check 3 Diagnosis Flow 3 Check 4 Check if the outdoor unit PC board is replaced with PC board for spare parts. Check if the unit is not connected to outdoor units of different models. Replace the main PC board of the outdoor unit. Check the model of the outdoor unit. Is a correct substitute PC board procured? Replace it with the correct substitute PC board. Check if the spare parts PC board setting is correct. Correct the setting to reset the power. Replace the spare parts PC board. Diagnosis Flow 4 Check 3 Check 4 Is a single unit of model REMQ installed? Procure the correct model of unit. (The REMQ model is dedicated to multi connections.) The connection wiring of multi outdoor units is broken or disconnected. Correct the connection wirings. Replace the main PC board (A1P).

284 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check 3 Diagnosis Flow 5 Check 4 Is the model BSVQ-P connected? Connect the model BSVQ-P. Replace the outdoor unit PC board as shown below. With single systems, replace the control PC board 1 (A1P). With multi systems, replace the main PC board (A1P). Diagnosis Flow 6 Check 3 Check 4 Is the wiring between the outdoor unit and the BS unit correct? Correct the wiring. Replace the outdoor unit PC board as shown below. With single systems, replace the control PC board 1 (A1P). With multi systems, replace the main PC board (A1P).

285 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check 3 Diagnosis Flow 7 Check 4 Is the wiring between the BS units correct? Correct the connection wiring. Replace the BS unit PC board concerned. Diagnosis Flow 8 Check 3 Check 4 Is the connection wiring between the indoor unit and the BS unit correct? Correct the connection wiring. Replace the indoor unit or BS unit PC board.

286 UC UC Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. The centralized address is duplicated. Make setting change so that the centralized address will not be duplicated.

287 UE UE

288 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the indoor unit for which UE is displayed. Is the the transmission malfunction (UE)caused on all indoor units? Continued to A (on the following page) Is the power supply of the indoor unit, on which the UE occurred,turned ON? Make sure there are no hazardous situations, and then turn ON the power supply. Has the setting of central control group No.been made with the indoor unit on which the UE occurred? Can the setting of central control group No be made? Make correct setting of the central control group No. Was the central control group No. for indoor unit changed? For VRV systems, can the setting of central controlgroup No. be made in one and the same refrigerant system? Check outdoor units to which the refrigerant system is connected. Check whether or not there are no problems with the transmission wiring length, types of cables and wires, number of units connected, and others. If no problems, replace the indoor unit PC board. Reset the power supplies of every central equipment. For the intelligent Touch controller, register the air conditioner again while in DIII-NET test run menu. (V2822)

289 A Check the transmission wiring between central equipment for any broken wire. For details, refer to information in the Procedure for checking broken wires section. (Refer p.352) Abnormal Correct the wiring. Normal Check the transmission wiring with the master unit central equipment for any broken wire. For details, refer to information in the Procedure for checking broken wires section. (Refer P.352) Abnormal Correct the wiring. Normal Has the master unit central setting connector been connected? Correct the connection of the connector. Disconnect the transmission wiring of the master unit central equipment, and then check the voltage between the transmission terminals (F1 and F2) of the master unit transmission equipment using a multiple meter. Is the voltage between the terminals F1 (+) and F2 (-) in the range of 15.2 to 17.6 VDC? Replace the central equipment. Central equipment: Normal It is supposed that the malfunction results from external factors (e.g. noises) from other equipment.

290 UF UF Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Are the stop valves openned? Open stop valve. Is the check operation carried out? Is indoor-outdoor and outdoor-outdoor unit transmission wiring normal? Replace indoor unit PC board. Is indoor - outdoor and outdoor - outdoor unit transmission wiring normal? After fixing incorrect wiring, push and hold the RESET button on the master outdoor unit PC board for 5 seconds. The unit will not run for up to 12 minutes. Wiring check operation may not have been carried out successfully. (V2830)

291 UH UH

292 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is electricity being introduce for the first time after installation or after an indoor or outdoor unit PC board has been replaced? Does a malfunction occur even after 12 minutes elapses from the time when electricity is introduced to indoor and outdoor units? Normal Is indoor - outdoor and outdoor - outdoor unit transmission wiring normal? Push and hold the RESET button on the outdoor unit PC board for 5 seconds After fixing incorrect wiring, push and hold the RESET button on the master outdoor unit PC board for 5 seconds. The unit will not run for up to 12 minutes. Does a malfunction occur? Normal Disconnect the outdoor-outdoor unit transmission wiring to create the one-system status, and then check whether or not the system is normal. Mount the DIII NET extension adapter. Does a UH malfunction occur for all indoor units in the system? Replace indoor unit PC board. Replace outdoor unit PC board (A1P or A3P). (V2831) 1: Check the correct wiring indoor-outdoor and outdoor-outdoor by Installation Instruction. 2: What is Auto Address? This is the address automatically assigned to indoor units and outdoor units after initial power supply upon installation, or after executing rewiring (Keep pressing the rewiring button for more than 4 seconds).

293 M1 M1 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn ON the power supply of the central equipment with M1 displayed once again. Is the M1 displayed again? With M1 displayed Replace the central equipment. Without M1 displayed Central equipment: Normal It is supposed that the malfunction results from external factors (e.g. noises) from other equipment.

294 M8 M8 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Were any changes made to the number of units of central equipment? (The central equipment was connected once, and then disconnected, or additional central equipment was installed.) Reset the power supplies of every central equipment. Have power supplies to every central equipment been turned ON? Turn ON the power supply of the central equipment. Is the display of LCD OK? Not hing is displayed on the LCD by operating Ve-Up controller. ( 1) Replace Ve-Up controller. Has the Reset switch (located inside of equipment) SS1 been set to the Normal side? Set the Reset switch (located inside of equipment) SS1 been set to the Normal side. Check 7 2 Check if the unit indicating A8 has no broken of wiring. Normal Abnormal Replace the central equipment. Correct the wiring. 1: Display screen control using Ve-Up controller: When the screen displays nothing by touching the screen, adjust the contrast volume. 2 Check 7 : Referring to the information on P352. Some central equipment gets faulty. Conduct RUN/STOP operations on every central equipment, and then replace the central equipment that cannot control the indoor unit.

295 MA MA

296 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Has the remote control adapter (KRP2A series) been connected? Has the schedule timer been connected? Has the Interface for BaCnet been connected? Has the DMF-IF been connected? Has the parallel interface been connected? Not available for combined use with the remote control adapter. Dismount the remote control adapter, and then reset power supplies of every central equipment. Not available for combined use of the schedule timer and the Interface for BaCnet. Dismount either of them, and then reset power supplies of every central equipment. Not available for combined use of the schedule timer and the DMS-IF. Dismount either of them, and then reset power supplies of every central equipment. Not available for combined use of the schedule timer and the parallel interface. Dismount either of them, and then reset power supplies of every central equipment. Has the Independent/ Combined use connector(cn1/x1a) of the schedule timer been connected? Dismount the Independent/ Combined use connector (CN1/X1A) of the schedule timer, and then reset power supplies of every central equipment. Are there two or more units of central equipment with master unit setting connectors (CN1/X1A) connected? Reset the power supplies of every central equipment. The List of Setting of Master Unit Central Setting Connector Check 8 1 The MA malfunction code is displayed again. The "MA" error code has been cleared. It is supposed that the Central equipment: Normal malfunction results from external factors (e.g. noises) from other equipment. Integrate every central equipment to which the master unit central connector is connected, and then reset power supplies of every central equipment. Disconnect the master unit central setting connector and connect this connector to different central equipment, and then reset power supplies of every central equipment. Central equipment, to which the master unit central setting connector is connected at the time when the malfunction code is cleared, is faulty. Replace this equipment. 1 Check 8 : Referring to the information on P353.

297 MC MC Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Did the malfunction occur while in the first test run using the intelligent Touch controller? Is the Master/Slave setting of the central equipment correct? If the intelligent Touch controller is used, correct the setting of the combination of master and slave units again while in DIII-NET test run mode, referring to the Master/Slave setting table. (Refer P183.) Is the Master/Slave setting of the central equipment correct? Was the central equipment connected once, and then disconnected, or was additional central equipment installed? Turn ON the power supply of the central equipment with "MC" displayed once again. Be sure to refer to the Master/ Slave setting table. Check 9 1 With "MC" Is displayed the "MC" displayed again? Correct the setting of the combination of master and slave units, and then reset the power supplies of every central equipment. Reset the power supplies of every central equipment. Replace the central equipment. Reset the power supplies of every central equipment. Without "MC" displayed Central equipment: Normal 1 Check 9 : Referring to the information on P354. It is supposed that the malfunction results from external factors (e.g. noises) from other equipment.

298

299 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is a malfunction code displayed on the remote control? Diagnose the cause with the air conditioner's failure diagnosis manual. Has a once connected indoor unit been removed or its address changed? Reset power supply for all optional controllers for centralized control simultaneously. Is the power supply for the indoor unit displaying a malfunction turned on? Turn the power supply of the indoor unit on. Is transmission wiring disconnected or wired incorrectly? Fix the wiring correctly. Is transmission with all indoor units malfunctioning? Is the group No. of malfunctioning indoor units set? Set the group No. correctly. Is the transmission wiring with the master controller disconnected or wired incorrectly? Replace the central PC board. Fix the wiring correctly. Is the master controller's connector for setting master controller disconnected. Connect the connector correctly. Replace the central PC board. (V2841)

300

301 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Has a once connected optional controller for centralized control been disconnected or its address changed? Reset power supply simultaneously for all optional controllers for centralized control. Is the power supply turned on for all optional controllers for centralized control? Turn on power supply for all optional controllers for centralized control. Is the reset switch of all optional controllers for centralized control set to "normal"? Set reset switch to "normal." Is transmission wiring disconnected or wired incorrectly? Fix the wiring correctly. Is a central remote control or schedule timer connected? Is the central remote control or schedule timer displaying a malfunction? Refer to failure diagnosis for central remote control or schedule timer. Are two or more unified ON / OFF controllers connected? Is the setting of the unified ON / OFF controller's switch for setting each address duplicated? Correct the setting of the unified ON / OFF controller's switch for setting each address and reset the power supply of the unified ON / OFF controller. A (V2842)

302 A Is the wiring adapter for electrical appendices connected? Is a schedule timer connected? Cannot be used in combination with a wiring adapter for electrical appendices. Remove the wiring adapter for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously. Is a parallel interface connected? Is the schedule timer's individual/combined connector connected? Schedule timer and parallel interface cannot be used in combination. Disconnect either the schedule timer or parallel interface and reset the power supply for all optional controllers for centralized control simultaneously. Disconnect the schedule timer's individual / combined connector and reset the power supply for all optional controllers for centralized control simultaneously. Are there two or more optional controllers for centralized control connected with the connector for setting master controller? Reset the power supply for all optional controllers for centralized control simultaneously. Arrange so that the connector for setting master controller is connected to one controller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously. If the malfunction is still not cleared: Disconnect the connector for setting master controller from the master controller, connect to another optional controller for centralized control and simultaneously reset all optional controllers for centralized control again. The controller connected by the connector for setting master controller when the malfunction is cleared is defective and must be replaced. (V2843)

303 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the central control address (group No.) set for the indoor unit? Is the control range setting switch set correctly? Is the transmission wiring disconnected or wired incorrectly? Set by remote control the central control address for all indoor units connected to the central control line. Set the control range setting switch correctly and simultaneously reset the power supply for all optional controllers. Fix the wiring correctly. Replace the unified ON/OFF controller. (V2844)

304 Red U White V Measure the resistance values between phases U,V,W. Black W 5 Gray GND 4 Pink 3 Orange 2 Blue Vcc W V Measure the resistance values between Vcc and U,V,W, and GND and U,V,W. 1 Yellow U

305 Faulty hot gas bypass control ( 1) Hot gas circuit clogging Defective solenoid valve coil Defective solenoid valve body Defective control PC board Check if coil resistance and insulation are normal. Temperature increase of discharge pipe Faulty discharge pipe temperature control [In cooling mode only] Faulty subcooling motorized valve control (EV2) ( 2) Faulty of 4 way switch valve operation Subcooling motor operated valve failure Control failure Defective valve coil Defective valve body Defective low pressure sensor Defective subcool heat exchange outlet thermister Defective control PC board 4 way switch valve is in the middle position. Leak from hot gas bypass valve Check if coil resistance and insulation are normal. Check if the voltage property is normal. Check if the connector is connected properly. Check if the thermister resistance property is normal. Check if the pressure value given by the service checker corresponding to actual measurement value by the sensor. Check if the piping temperature connected to the 4 way switch valve is normal. Compressor overheat [In cooling mode] When indoor unit electronic expansion valve becomes too narrow ( 3) Faulty superheated degree control. [In heading mode]when outdoor unit electronic expansion valve becomes too narrow ( 4) Refrigerant gas shortage Superheat due to shaft damage Superheat due to defective compressor Indoor unit motorized valve failure Faulty control Outdoor unit motorized valve failure Faulty control Irregular piping length Defective valve coil Defective valve body Defective thermister for indoor unit gas pipe Defective thermister for indoor unit liquid pipe Defective control PC board Defective valve coil Defective valve body Defective low pressure sensor Defective thermister for suction pipe Defective control PC board Check if coil resistance and insulation are normal. Check if the connector is connected properly. Check if the thermister resistance property is normal. Check if the connector is connected properly. Check if the thermister resistance property is normal. Check if coil resistance and insulation are normal. Check if the voltage property is normal. Check if the connector is connected properly. Check if the thermister resistance property is normal. Check if the pressure value given by the service checker corresponding to actual measurement value by the sensor. Refer to [Check 7] Does the piping length fall in the permissible range? Large resistance of piping Bend/collapse (Including moisture choke) Corduet visual checks. Remove the moisture by vacuum break. (Refer to [Check 8]) Stop valve is closed. Check if the stop valve is open. 1: Refer to Low pressure protective control (P126) for hot gas bypass control. 2: Refer to P108 for subcooling electronic expansion valve control. 3: Superheating temperature control in cooling mode is conducted by indoor unit electronic expansion valve. (Refer to P141) 4: Superheating temperature control in heating mode is conducted by outdoor unit electronic expansion valve (EVM). (Refer to P108). 5: Judgment criteria of superheat operation: 1 Suction gas superheating temperature: 10 degrees and over. 2 Discharge gas superheating temperature: 45 degrees and over, except for immediately after starting and drooping control, etc.. (Use the above stated values as a guide. Depending on the other conditions, the unit may be normal despite the values within the above scope.)

306 Perform the following procedures prior to check. (1) Power Off. (2) Remove all the wiring connected to the PC board where power transistors are mounted on. [Preparation] Tester Preparing a tester in the analog system is recommended. A tester in the digital system with diode check function will be usable. [Point of Measurement and Judgment Criteria] Measure the resistance value using a tester at each point of measurement below, 10 minutes later after power OFF. To use analog tester: Measurement in the resistance value mode in the range of multiplying 1kΩ. No Point of Measurement Judgment Criteria + P2 P2 P2 U V W N3 N3 N3 U V W U V W P2 P2 P2 U V W N3 N3 N3 2 ~ 15kΩ Remarks Due to condenser charge 15kΩ and and so on, resistance above measurement may require (including ) some time. 2 ~ 15kΩ To use digital tester: Measurement is executed in the diode check mode. ( ) No Point of Measurement Judgment Criteria + P2 P2 P2 U V W N3 N3 N3 U V W U V W P2 P2 P2 U V W N3 N3 N3 1.2V and over 0.3 ~ 0.7V 1.2V and over Remarks Due to condenser charge and so on, resistance measurement may require some time. Due to condenser charge and so on, resistance measurement may require some time. [PC board and Circuit Diagram] J1 J2 J3 P1 P3 N3 U V W DM P1 P2 P3 IGBT X10A K2 L1 L2 L3 J1 J2 J3 N3 U V W X11A (V2895)

307 Rise in high pressure Local pressure rise [In cooling] If the outdoor unit electronic expansion valve is throttled: (See *1.) Faulty high pressure control High pipe resistance Faulty outdoor unit motorized valve A temperature difference in excess of 10 C between the inlet and the outlet is deemed to be abnormal. Faulty control Faulty indoor unit motorized valve Stop valve closed Bent or crashed pipe Clogging of foreign particles Faulty valve coil Faulty valve body Faulty high pressure sensor Faulty control PC board Faulty valve coil Faulty valve body Check to be sure the stop valve is open. Conduct visual checks for pipe conditions. Is there any temperature difference caused before and after the filter or branch pipe. Are the coil resistance and insulation normal? Are the electrical characteristics normal? Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor? Are the coil resistance and insulation normal? [In heating] If the indoor unit electronic expansion valve excessively throttled: (See *2.) Faulty control Faulty high pressure sensor Faulty indoor unit liquid pipe thermistor Faulty control PC board Are the electrical characteristics normal? In the connector properly connected? Are the thermistor resistance characteristics normal? Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor? [In cooling] High suction air temperature of the condenser [In heating] High suction air temperature of outdoor unit High suction air temperature of indoor unit Short circuit Short circuit Faulty suction air thermistor of indoor unit High suction air temperature of outdoor unit High ambient temperature High ambient temperature Is the suction air temperature not more than 43 C? Is the outdoor temperature not more than 43 C? Is the suction air temperature not more than 27 C? Is the indoor temperature not more than 27 C? Is the connector properly connected? Are the thermistor resistance characteristics normal? Is the outdoor temperature not more than 16 CWB? Degradation in condensing capacity Faulty outdoor temperature thermistor of outdoor unit Dirty condenser Mixing of non-condensable gas Is the connector properly connected? Are the thermistor resistance characteristics normal? Is the heat exchanger clogged? (In cooling) Is air or else mixed in the refrigerant system? Decreased fan airflow rate Decreased fan output Faulty fan motor Faulty control PC board (Including capacity setting) Can the fan motor be rotated with hands? Are the motor coil resistance and insulation normal? If a spare PC board is mounted, is the capacity setting properly made? High air passage resistance Dirty filter Obstacle Is the air filter clogged? Is there any obstacle in the air passage? Excessive refrigerant charging Improper model selection [In heating] Refer to P265. Is the indoor unit too small compared to the large-sized outdoor unit? *1: In cooling, it is normal if the outdoor unit electronic expansion valve (EVM) is fully open. *2: In heating, the indoor unit electronic expansion valve is used for subcooled degree control. (For details, refer to Electronic Expansion Valve Control on P141.) SDK04009

308 Abnormally low low-pressure (Low evaporating temperature) [In cooling] (See *1.) Faulty low pressure control [In both cooling and heating] (See *2.) [In cooling] If the indoor unit electronic expansion valve is throttled too much: (See *3.) Faulty electronic expansion valve control [In heating] If the outdoor unit electronic expansion valve excessively throttled: (See *4.) [In cooling] Faulty compressor capacity control Faulty low pressure protection control Faulty indoor unit electronic expansion valve Faulty control Faulty outdoor unit electronic expansion valve Faulty control Low suction air temperature of indoor unit Faulty low pressure sensor Faulty control PC board Faulty low pressure sensor Faulty hot gas solenoid valve Faulty control PC board Faulty valve coil Faulty valve body Faulty gas pipe thermistor of indoor unit Faulty liquid pipe thermistor of indoor unit Faulty control PC board Faulty valve coil Faulty valve body Faulty low pressure sensor Faulty suction pipe thermistor Faulty control PC board Are the electrical characteristics normal? Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor? Are the electrical characteristics normal? Are the coil resistance and insulation normal? Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor? Are the coil resistance and insulation normal? Check for the thermistor resistance and connection. Check for the thermistor resistance and connection. Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor? Are the coil resistance and insulation normal? Are the electrical characteristics normal? Check for the thermistor resistance and connection. Short circuit Is the suction air temperature not less than 14 C Low ambient temperature Is the indoor temperature not more than 14 C Low suction air temperature of the evaporator [In heating] Less circulation quantity of refrigerant Degradation in condensing capacity Faulty suction air thermistor of indoor unit Low suction air temperature of outdoor unit Faulty outdoor temperature thermistor of outdoor unit High pipe resistance Abnormal piping length Bent or crashed pipe Clogging of foreign particles Stop valve closed Inadequate refrigerant quantity Refer to P304. Moisture choke Dirty evaporator Decreased fan airflow rate Decreased fan output High air passage resistance Is the connector properly connected? Are the thermistor resistance characteristics normal? Is the outdoor temperature not less than -20 C Is the connector properly connected? Are the thermistor resistance characteristics normal? Does the piping length fall in the permissible range? Conduct visual checks for pipe conditions. Is there any temperature difference caused before and after the filter or branch pipe? Check to be sure the stop valve is open. Eliminate moisture by vacuum operation. Is the heat exchanger clogged? Faulty fan motor Faulty control PC board (Including capacity setting) Dirty filter Obstacle Can the fan motor be rotated with hands? Are the motor coil resistance and insulation normal? If a spare PC board is mounted, is the capacity setting properly made? Is the air filter clogged? Is there any obstacle in the air passage? *1: For details of the compressor capacity control while in cooling, refer to Compressor PI Control on P100. *2: The low pressure protection control includes low pressure protection control and hot gas bypass control. For details, refer to P126. *3: In cooling, the indoor unit electronic expansion valve is used for superheated degree control. (For details, refer to P141.) *4: In heating, the outdoor unit electronic expansion valve (EVM) is used for superheated degree control of outdoor unit heat exchanger. (For details, refer to P108.) SDK04009

309 1 Short-circuit between the outdoor-outdoor unit terminal parts. 2 Check the transmission wiring for continuity. If there is continuity, the indoor-outdoor unit transmission has no broken wires in it. Indoor-outdoor Unit Transmission Wiring 2 Short-circuit between the indoor-outdoor unit terminal parts. Outdoor-outdoor Unit Transmission Wiring 1 Check the transmission wiring for continuity. If there is continuity, the outdoor-outdoor unit transmission has no broken wires in it. Unified ON/OFF controller Central remote control

310 Pattern 1 to 2 1 units (*1) 2 3 Central equipment connection pattern Intelligent Touch controller 1 unit Central remote control 1 unit Unified ON/OFF controller Schedule timer (*1) (*1) Setting of master unit central setting connector(*2) Intelligent Touch controller Only a single unit: "Provided", Others: "Not provided" Provided Central remote control Not provided Unified ON/OFF controller Schedule timer AT AK 1 to 2 units 1 to 4 units 1 to 8 units 1 to 16 units 1 to 16 units (*1) 1 unit 1 unit 1 unit 1 unit Only a single unit: "Provided", Others: "Not provided" Only a single unit: "Provided", Others: "Not provided" All "Not provided" All "Not provided" Only a single unit: "Provided", Others: "Not provided" Not provided Not provided Not provided Provided

311 Master Slave #1 #2 #3 #4 DCS601C

312 Refrigerant accumulation Faulty crankcase heater Frequent ON/OFF of compressor Overcharge of refrigerant Refer to information in the [Check 6] section. [Cooling] Indoor unit motorized valve opens too much. (*1) Faulty control of superheated degree Faulty indoor unit motorized valve Faulty control Faulty valve coil Faulty valve body Faulty indoor unit gas pipe thermistor Faulty indoor unit liquid pipe thermistor Faulty control PC board Does the valve coil have normal resistance and insulation? (Refer to information in the [Check 11] section.) Is the connector correctly connected? Are the thermistor resistance characteristics normal? Is the connector correctly connected? Are the thermistor resistance characteristics normal? Wet operation [Heating] Outdoor unit motorized valve opens too much. (*2) Faulty outdoor unit motorized valve Faulty control Faulty valve coil Faulty valve body Faulty power pressure sensor Faulty suction pipe thermistor Faulty control PC board Does the valve coil have normal resistance and insulation? (Refer to information in the [Check 11] section.) Are the voltage characteristics normal? Is the connector correctly connected? Does the thermistor have normal resistance characteristics? Is the pressure reading of the service checker corresponding to the actual measurement of the sensor? Dirty evaporator Does the heat exchanger get clogged? Degraded evaporation capacity Reduced air quantity Reduced fan output Faulty fan motor Faulty control PC board (including faulty capacity setting) Can the fan motor be rotated by hand? Does the fan motor coil have normal resistance and insulation? Increased resistance in air passage Dirty filter Obstacles Does the air filter get clogged? Are there any obstacles in the air passage? *1: "Superheated degree control" in cooling operation is exercised with the indoor unit motorized valve. (Refer to information on P141.) *2: "Superheated degree control" in heating operation is exercised with the outdoor unit motorized valve (EV1). (Refer to information on P108.) *3: Guideline of superheated degree to judge as wet operation 1Suction gas superheated degree: Not more than 3 C; 2Discharge gas superheated degree: Not more than 15 C, except immediately after compressor starts up or is running under drooping control. (Use the values shown above as a guideline. Even if the superheated degree falls in the range, the compressor may be normal depending on other conditions.)

313 Cooling High pressure High-pressure drooping control HP gradually rises with increase in frequency. Frequency comes to the minimum level. Supercooled degree becomes higher. (Liquid connection pipe temperature lowers.) Low pressure (LP is maintained at a constant level.) LP rises due to reduced compressor output. Frequency To maintain LP, frequency increases under the capacity control. Heating High pressure The outdoor unit motorized valve is closed due to the overload control. Frequency comes to the minimum level. (HP is maintained at a constant level.) Low pressure Frequency LP rises due to reduced frequency. To maintain HP, frequency reduces under the capacity control. HP drops or rises immediately after the overload control is complete. LP drops due to closed outdoor unit motorized valve. Hot gas bypass is activated for LP protection, i.e., hunting at LP. Proper quantity (Degree of overcharge) Higher degree of overcharge

314 Cooling The opening degree of the indoor unit motorized valve becomes larger. Either of the motorized valves becomes fully open. Frequency comes to the minimum level. Fan control is activated for HP protection under cooling control at low outdoor temperature, i.e., the fan is hunting at HP. High pressure (LP is maintained at a constant level.) Low pressure LP rises as the opening degree of the indoor unit motorized valve becomes larger. Frequency slightly increases under the capacity control. Frequency HP drops with decrease in compressor capacity. If frequency comes to the minimum level, LP cannot be maintained. Heating High pressure To maintain LP, frequency drops due to the capacity control. The opening degree of the outdoor unit motorized valve becomes larger. The outdoor unit motorized valve fully opens and frequency increases. Discharge pipe or LP drooping control (HP is maintained at a constant level.) Frequency comes to the minimum level. Low pressure Frequency To maintain LP, frequency drops due to the capacity control. Frequency drops due to the drooping control. Proper quantity (Degree of refrigerant shortage) Higher degree of shortage

315

316

317 Main (Control) PC board LC Transmission error When transmissions between the main PC board and the inverter PC board are not normal Instantaneous overcurrent of inverter compressor (When inverter output current exceeds 32.3A even instantaneously) Overcurrent of inverter compressor 1An overcurrent of 19.0A or more continues for a period of 5 consecutive seconds 2An overcurrent of 16.1A or more continues for a period of 260 consecutive seconds. Power supply (3 phase, 400VAC) Weak-current part Heavy-current part (Power transmission etc.) Inverter PC board L5 L8 Compressor U2 P1 L1 P4 L4 PJ E5 L9 Imbalanced power supply voltage When imbalance in voltages among three phases comes to 2% or more Power supply voltage error When the power supply voltage falls out of the range of 400VAC±10% Faulty inverter When the heavy current part of inverter gets faulty (gives no output) PC board mismatching When incorrect inverter PC board is connected Radiator fin temperature rise When the radiator fin temperature reached 93 C or more Faulty fin thermistor When the fin thermistor resistor detects an open circuit (-30 C or less) or a short circuit (120 C or more) Faulty startup of inverter compressor (Compressor stops running immediately after it starts up.) Inverter compressor lock (Compressor does not run at all.) Malfunction codes related to compressor current Current 32.3A Instantaneous overcurrent L5 Compressor overcurrent (Electronic thermal 2) L8 19.0A 5 consecutive sec. Compressor overcurrent (Electronic thermal 1) L8 16.1A 260 consecutive sec. Max. control Time

318

319 Liquid pipe High and low pressure gas pipe Suction gas pipe Left Filter Electronic expansion valve Filter Service port Stop valve (with service port 7,9mm flare connection Filter Electronic expansion valve Electronic expansion valve Filter Check valve Solenoid valve Four way valve Capillary filter tube Four way valve Filter Capillary tube High pressure switch Check valve Filter Filter Compressor STD Capillary tube Filter Heat exchanger Right Strainer Pressure regulating valve (check valve type) Electronic expansion valve Electronic expansion valve Filter Check valve Solenoid valve Four way valve Capillary filter tube High pressure sensor Check valve Filter Solenoid valve High pressure switch Filter Check valve Compressor INV Solenoid valve Capillary tube S2NPL Low pressure Filter sensor Solenoid valve Heat exchanger Solenoid valve Strainer Refrigerant regulator Filter Filter Solenoid valve Capillary tube 3D058154B Oil separator Oil separator Pressure regulating valve (absolute pressure type) HPS HPS Check valve SV S1NPH SV SV

320 Liquid pipe High and low pressure gas pipe Suction gas pipe Left Filter Electronic expansion valve Filter Service port Stop valve (with service port 7,9mm flare connection Filter Electronic expansion valve Electronic expansion valve Filter Check valve Solenoid valve Four way valve Capillary filter tube Four way valve Filter Capillary tube High pressure switch Check valve Filter Filter Compressor INV Capillary tube Filter Heat exchanger Right Strainer Pressure regulating valve (check valve type) Electronic expansion valve Electronic expansion valve Filter Check valve Solenoid valve Four way valve Capillary filter tube High pressure sensor Check valve Filter Solenoid valve High pressure switch Filter Check valve Compressor INV Solenoid valve Capillary tube S2NPL Low pressure sensor Filter Solenoid valve Heat exchanger Solenoid valve Strainer Refrigerant regulator Filter Filter Solenoid valve Capillary tube 3D058153B Oil separator Oil separator Pressure regulating valve (absolute pressure type) HPS HPS Check valve SV S1NPH SV SV

321 Left Stop valve (with service port 7,9mm flare connection Filter Electronic expansion valve Four way valve Liquid pipe High pressure sensor Service port Filter Filter Filter Electronic expansion valve Solenoid valve Filter Filter Electronic expansion valve Check valve Pressure equalizer pipe Strainer Capillary tube Capillary tube Filter Refrigerant regulator High pressure switch Filter Filter Compressor INV Capillary tube Electronic expansion valve Four way valve Check valve Filter High and low pressure gas pipe Solenoid valve Pressure regulating valve (absolute pressure type) Solenoid valve Filter Filter Heat exchanger Oil separator Check valve Solenoid valve Strainer Check valve HPS Solenoid valve Solenoid valve SENPL Low pressure sensor Capillary tube SV SENPH SV SV SV SV Suction gas pipe Pressure regulating valve (check valve type) 3D057743

322 Stop valve (with service port 7,9mm flare connection Filter Four way valve Liquid pipe High pressure sensor Service port Filter Filter Filter Electronic expansion valve Solenoid valve Filter Filter Pressure equalizer pipe Strainer Capillary tube Electronic expansion valve Electronic expansion valve Check valve Capillary tube Filter Four way valve Check valve Filter Refrigerant regulator High pressure switch Filter Filter High and low pressure gas pipe Solenoid valve Check valve Solenoid valve Solenoid valve Pressure regulating valve (absolute pressure type) Strainer Filter Compressor INV Capillary tube Filter Heat exchanger Oil separator Check valve HPS Solenoid valve Solenoid valve Capillary tube SENPL Low pressure sensor SV SENPH SV SV SV SV Oil separator Pressure regulating valve (check valve type) High pressure switch HPS Capillary tube Check valve Filter Filter Compressor STD1 Suction gas pipe 3D057742

323 Liquid pipe Pressure equalizer pipe High and low pressure gas pipe Suction gas pipe Stop valve (with service port 7,9mm flare connection Filter Strainer High pressure sensor Four way valve Service port Filter Electronic expansion valve Filter Capillary tube Filter Solenoid valve Filter Filter Solenoid valve Check valve Solenoid valve Refrigerant regulator Filter Solenoid valve Capillary tube Electronic expansion valve Pressure regulating valve (absolute pressure type) Strainer High pressure switch Filter Low pressure sensor Electronic expansion valve Filter Check valve Solenoid valve Capillary tube Filter Four way valve Heat exchanger Check valve Filter Filter Filter Filter Capillary tube Compressor STD1 Oil separator HPS SENPL Check valve SV SENPH SV SV SV Pressure regulating valve (check valve type) Check valve Oil separator High pressure switch HPS Oil separator Compressor INV HPS High pressure switch Filter Filter Capillary tube Capillary tube Compressor STD2 3D057741

324 Heat exchanger Fan Liquid pipe connection port Filter Electronic expansion valve Filter Gas pipe connection port Refrigerant flow Cooling Heating Refrigerant pipe connection port diameters Model FXFQ20, 25, 32, 40, 50P FXFQ63, 80, 100, 125P Gas Liquid

325 Heat exchanger Gas piping connection port Flare connection Th3 Th1 Fan Th2 Liquid piping connection port (Flare connection) Filter Electronic expansion valve Filter Th1: Thermister for suction air temp. Th2: Thermister for liquid line temp. Th3: Thermister for gas line temp. 4D φ φ

326 Heat exchanger Fan Liquid piping connection port Filter Electronic expansion valve Filter Gas piping connection port Refrigerant flow Cooling Heating φ φ φ φ φ φ φ φ φ φ

327 Heat exchanger (4) Gas piping connection port (Flare connection : φ15.9 or less Attached piping : Above φ19.1) Fan (2) (3) Liquid piping connection port (Flare connection) Filter (1) Electronic expansion valve Filter φ φ φ φ

328 Gas side Liquid side Electronic expansion valve Filter Filter Fan Indoor heat exchanger 4D043864H φ φ φ φ

329 Indoor heat exchanger Filter Field piping ø9.5 C1220T_O Field piping ø15.9 C1220T_O To outdoor unit Indoor unit 4D037995F Liquid piping connection port Filter Electronic expansion valve Filter Liquid piping connection port Gas piping connection port Gas piping connection port 4D034127B

330 Liquid pipe connection port Liquid pipe connection port Double pipe heat exchanger Electric Expansion Valve (EVSC) Filter Capillary tube Gas pipe connection port Filter Electric Expansion Valve (EVHS) Electric Expansion Valve (EVH) Filter HP/LP gas pipe connection port Electric Expansion Valve (EVLS) Filter Suction gas pipe connection port Electric Expansion Valve (EVL) 4D057985A

331 L1 L2 L3 N TES) POWER SUPPLY 3N ~ V 50Hz EL. COMPO. BOX (2) X9A X1M L1 L2 L3 N EL. COMPO. BOX (1) X1A X3A X2A X4A X1M RED WHT BLK BLU A2P A1P X1M (FRONT) A5P A4P (BACK) X8A L1R A6P 1 2 X2M A3P RED X1A F1U BLU PS BLK Q1RP TE) 3 X37A F2U X8A X9A X12A X15A X26A X2A P< E2HC S2PH Y8S Y9S Y10S 3 5 X3A R32T R11T R12T R13T R14T R15T R10T 2 X4A t t t t t t t 4 6 X1M V1CP 1 X29A 1 X30A X18A TO MULTI K1R X23A X22A UNIT A1 RED BLU BLK X21A HAP Q1 Q2 K2M WHT X5A WHT WHT V W A2 BLU BLK X5A 6 M 3~ 5 5 X9A 6 M2C M Y5E M Y4E M Y3E TERMINAL OF M1C, M2C W U V A4P + + K4 - A1P RED X1A F1U BLU BLK Q1RP Z2C Z1C F2U C1 N=2 S1PH P< X7A X9A X11A X15A X400A X2A Y1S Y2S E1HC Y3S Z1F X3A R31T R2T R4T R5T R6T F400U t t t t t K3 X402A X401A X403A X4A 1 X29A 1 X30A V1CP H1P H2P H3P H4P H5P H6P H7P H8P X10A X1A X1M TO K2 X61A BS1 BS2 BS3 BS4 BS5 X6A HAP IN/D X28A X23A UNIT V1R PS Z3C X32A X31A X20A X37A BLU X21A F1 F2 K1 X4A WHT S1NPH S2NPL R95 N3 Z5C BLK BLU RED 6 BLK 5 M X8A P3 A6P A7P Y2E 6 P1 N1 M P2 N2 P1 N1 Y1E indoor (F1)(F2) X5A X51A X5A TE) 4 X5A F1U R10 F1U R10 R8T R9T R90 X3A + - X4A X3A + X4A A2P X41A t t V1R V1R V2R X2A X2A X111A X11A X1A X1A X15A X10A X11A X12A X1A F1U t Z6C Z7C Z4C 5 5 RED R1T RED N=5 X1A X3A X2A X4A X16A WHT X9A X3A X4A X5A X7A X8A MS MS WHT RED 3~ M1F 5 3~ M2F 5 TE) 3 Y4S Y5S Y6S TE) 3 Y7S R7T t PS RED WHT BLK K2R RED P1 WHT L1R WHT P2 + R59 - outdoor (F1)(F2) RED WHT -BLK RED WHT BLK K6R V W MS 3~ M1C HAP R1T t K3R K3R K7R K11R + R50 F1 X18A TO MULTI UNIT K5R RED GRN WHT BLU BLK C66 Q2 K1R K5R X6A X7A X2M A3P X1M K2M A8P X5A A7P X6A RED WHT BLK K11R X1A T1A A8P Z8C N=5 EL. COMPO. BOX (2) M2C LAYOUT OF M1C, M2C, M1F, M2F M2F M1F THIS DWG. EL. COMPO. BOX (1) M1C OUTER SHELL A5P U C63 TO OUT/D UNIT F2 Q1 RED WHT BLK K4R U X7A K5R K8R RED WHT BLK BLU K2M 1. THIS WIRING DIAGRAM IS APPLIED ONLY TO THE OUTDOOR UNIT. 2. : FIELD WIRING : TERMINAL STRIP : CONNECTOR : TERMINAL : PROTECTIVE EARTH (SCREW) 3. WHEN USING THE OPTIONAL ADAPTOR, REFER TO THE INSTALLATION MANUAL OF THE OPTIONAL ADAPTOR. 4. FOR CONNECTION WIRING TO "TO IN/D UNIT F1 F2" OR "TO OUT/D UNIT F1 F2", REFER TO THE INSTALLATION MANUAL. 5. HOW TO USE BS1 ~ 5, REFER TO "SERVICE PRECAUTION" LABEL ON EL. COMPO. BOX (1) COVER. 6. WHEN OPERATING, DON'T SHORTCIRCUIT THE PROTECTION DEVICE (S1, 2PH). 7.,, SYMBOLS INDICATE COLORS OF EACH PARTS AS SHOWN BELOW. : IS CONNECTOR COLOR FOR PRINTED CIRCUIT BOARD. : IS CONNECTOR COLOR FOR COMPONENT. : IS IDENTIFICATION COLOR FOR COMPONENT LEAD WIRE. 8. COLORS BLK : BLACK RED : RED BLU : BLUE WHT : WHITE. 1 A1P A2P A3P A4P A5P A6P, A7P A8P BS1~5 C1 C63, C66 E1HC, E2HC F1U, F2U F1U F1U F400U K1 K2 K3 K4 PRINTED CIRCUIT BOARD (MAIN) PRINTED CIRCUIT BOARD (SUB 1) PRINTED CIRCUIT BOARD (SUB 2) PRINTED CIRCUIT BOARD (ISE FILTER) PRINTED CIRCUIT BOARD (INV) PRINTED CIRCUIT BOARD (FAN) PRINTED CIRCUIT BOARD (CURRENT SENSOR) PUSH BUTTON SWITCH (MODE, SET, RETURN, TEST, RESET) CAPACITOR CAPACITOR CRANKCASE HEATER (A1P) (A3P) FUSE (T, 3.15A, 250V) (A1P) (A3P) FUSE (T, 3.15A, 250V) (A2P) FUSE (8A, DC650V) (A6P) (A7P) FUSE (T, 6.3A, 250V) MAGNETIC RELAY MAGNETIC CONTACTOR (M1C) MAGNETIC RELAY MAGNETIC CONTACTOR (M1C) K2M H1P~8P HAP K1R K1R K2R K3R K3R K4R K5R K5R K5R K6R K7R K8R K11R K11R L1R MAGNETIC RELAY (M2C) PILOTLAMP (SERVICE MONITOR: ORANGE) [H2P] PREPARE, TEST FLICKERING MALFUNCTION DETECTION---LIGHT UP PILOT LAMP (SERVICE MONITOR-GREEN) (A1P, A2P, A3P) MAGNETIC RELAY (Y4S) (A2P) MAGNETIC RELAY (K2M) (A3P) MAGNETIC RELAY (Y5S) MAGNETIC RELAY (Y1S) (A1P) MAGNETIC RELAY (Y6S) (A2P) MAGNETIC RELAY (Y8S) MAGNETIC RELAY (Y2S) (A1P) MAGNETIC RELAY (FOR OPTION) (A2P) MAGNETIC RELAY (Y9S) (A3P) MAGNETIC RELAY (Y7S) MAGNETIC RELAY (E1HC) (A1P) MAGNETIC RELAY (E2HC) (A3P) MAGNETIC RELAY (Y3S) (A1P) MAGNETIC RELAY (Y10S) (A3P) REACTOR M1C, M2C M1F, M2F PS Q1RP R10 R50, R59 R90 R95 R1T R1T R2T R31T R32T R4T R5T R6T R7T R8T R9T R10T MOTOR (COMPRESSOR) MOTOR (FAN) SWITCHING POWER SUPPLY (A1P, A3P, A5P) PHASE REVERSAL DETECT CIRCUIT (A1P) (A3P) RESISTOR (CURRENT SENSOR) (A6P) (A7P) RESISTOR RESISTOR (CURRENT SENSOR) RESISTOR (CURRENT LIMITING) THERMISTOR (AIR) (A1P) THERMISTOR (FIN) (A5P) THERMISTOR (HEAT EXC. GAS 1) THERMISTOR (M1C DISCHARGE) THERMISTOR (M2C DISCHARGE) THERMISTOR (HEAT EXC. DEICER 1) THERMISTOR (SUB COOL HEAT EXC. GAS 1) THERMISTOR (SUB COOL HEAT EXC. LIQUID) THERMISTOR (HEAT EXC.LIQUID 1) THERMISTOR (SUCTION 1) THERMISTOR (LIQUID 1) THERMISTOR (SUCTION 2) R11T R12T R13T R14T R15T S1NPH S2NPL S1PH,S2PH T1A V1CP V1R V1R V2R X1M X1M X2M X1A~X9A Y1E Y2E Y3E THERMISTOR (HEAT EXC. GAS 2) THERMISTOR (HEAT EXC. DEICER 2) THERMISTOR (SUB COOL HEAT EXC. GAS 2) THERMISTOR (LIQUID 2) THERMISTOR (HEAT EXC. LIQUID 2) PRESSURE SENSOR (HIGH) PRESSURE SENSOR (LOW) PRESSURE SWITCH (HIGH) CURRENT SENSOR SAFETY DEVICES INPUT (A1P) (A3P) DIODE BRIDGE (A5P) POWER MODULE (A6P) (A7P) POWER MODULE TERMINAL STRIP (POWER SUPPLY) TERMINAL STRIP (CONTROL) (A1P) (A3P) TERMINAL STRIP (RELAY) CONNECTOR ELECTRONIC EXPANSION VALVE (MAIN 1) ELECTRONIC EXPANSION VALVE (SUBCOOL 1) ELECTRONIC EXPANSION VALVE (MAIN 2) Y4E Y5E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Y8S Y9S Y10S Z1C~8C Z1F ELECTRONIC EXPANSION VALVE (CHARGE) ELECTRONIC EXPANSION VALVE (SUBCOOL 2) SOLEID VALVE (RMTG) SOLEID VALVE (4 WAY VALVE-HEAT EXC. 1) SOLEID VALVE (RMTL) SOLEID VALVE (HOT GAS) SOLEID VALVE (EV BYPASS 1) SOLEID VALVE (RMTT) SOLEID VALVE (RMTO) SOLEID VALVE (4 WAY VALVE-PIPE) SOLEID VALVE (4 WAY VALVE-HEAT EXC. 2) SOLEID VALVE (EV BYPASS 2) ISE FILTER (FERRITE CORE) ISE FILTER (WITH SURGE ABSORBER) CONNECTOR FOR OPTIONAL PARTS X7A OPERATION OUTPUT (A2P) X9A POWER SUPPLY (ADAPTER) (A2P) X37A POWER SUPPLY (ADAPTER) (A3P) 3D056775D

332 POWER SUPPLY 3N~ V 50Hz L1 L2 L3 N TES) 1. THIS WIRING DIAGRAM IS APPLIED Z8C ONLY TO THE OUTDOOR UNIT. 2. : FIELD WIRING. A7P : TERMINAL STRIP : CONNECTOR : TERMINAL : PROTECTIVE EARTH (SCREW) 3. WHEN USING THE OPTIONAL K4 ADAPTOR, REFER TO THE INSTALLATION MANUAL OF A8P THE OPTIONAL ADAPTOR. 4. FOR CONNECTION WIRING TO "TO IN/D UNIT F1 F2", OR "TO OUT/D UNIT F1 F2", REFER + TO THE INSTALLATION MANUAL. P1 5. HOW TO USE BS1~5, REFER TO WHT "SERVICE PRECAUTION" LABEL L2R ON EL. COMPO. BOX (1) COVER. WHT 6. WHEN OPERATING, DON'T P2 SHORTCIRCUIT THE PROTECTION C66 + C63 + DEVICE (S1, 2PH). R50 R59 7.,, SYMBOLS INDICATE COLORS OF EACH PARTS AS SHOWN BELOW. + : IS CONNECTOR COLOR FOR PRINTED CIRCUIT BOARD. : IS CONNECTOR COLOR FOR COMPONENT. : IS IDENTIFICATION COLOR U V W FOR COMPONENT LEAD WIRE. MS 8. COLORS BLK: BLACK RED: RED BLU: BLUE WHT: WHITE. M2C X1M L1 L2 L3 N RED WHT BLK BLU A1P RED X1A F1U BLU PS BLK Q1RP Z2C Z1C C1 F2U X7A X9A X11A X15A N=2 S1PH P< A4P X400A X2A Y1S Y2S E1HC Y3S Z1F X3A R31T R2T R4T R5T R6T R7T R1T F400U t t t t t t t K4 K3 X402A X4A X401A X403A V1CP 1 X29A 1 X30A X18A A5P H1P H2P H3P H4P H5P H6P H7P H8P X1M X10A X1A TO TO TO X61A BS1 BS2 BS3 BS4 BS5 HAP IN/D OUT/D MULTI K2 X6A X28A X23A UNIT UNIT UNIT V1R X32A X31A X20A X37A BLU X21A F1 F2 F1 F2 Q1 Q2 + - PS Z3C P1 K1 WHT WHT X4A S1NPH S2NPL R95 L1R Z5C BLU N3 6 WHT 5 X8A M P2 Y2E C66 C63 P A6P M Y1E indoor P1 N1 R50 R59 (F1) (F2) outdoor X5A R8T R9T TE) 4 (F1) (F2) X5A F1U R10 A2P t R90 X3A t X4A X41A V1R X15A X10A X11A X12A V2R X2A X111A X1A X1A F1U X11A Z4C t Z6C 5 N=5 R1T X1A X16A V X9A X3A X4A X5A X8A HAP U W X2A X7A MS 3~ MS 5 TE) 3 Y4S Y5S Y6S TE) 3 Y7S 3~ M1C M1F RED WHT BLK RED WHT BLK K1R K2R K3R K5R K6R RED BLK RED GRN WHT BLU BLK K3R K5R K7R K11R EL. COMPO. BOX (2) X3A X4A X2M (FRONT) A8P A7P X7A (BACK) A3P X1M X6A X5A X9A L2R A9P X6A X2M X1A X2A X1M A5P A4P L1 L2L3 N BLK RED WHT BLK RED WHT BLK - M2F EL. COMPO. BOX (1) A2P (FRONT) (BACK) A1P X1M X8A L1R A6P Z7C N=2 RED BLU BLK F2U C1 X8A X9A X11A X15A X400A P< S2PH Z1F X2A E2HC Y8S Y9S Y10S F400U K3 X402A X3A R32T R11T R12T R13T R14T R15T R10T X401A X403A t t t t t t t X4A 1 1 X10A X1A X29A X30A X18A X61A V1CP K2 X1M Z9C HAP TO V1R MULTI PS X6A X28A X23A X22A UNIT K1 X4A BLU Q1 Q2 X20A X37A BLK X21A R95 N3 Z11C TE) 3 WHT WHT X5A BLU BLK P3 6 A9P 5 5 X9A P1 N1 M Y5E M Y4E 6 X5A M Y3E X5A F1U R10 R90 X3A + - X4A X41A LAYOUT OF M1C, M2C, M1F, M2F V1R V2R X2A X111A X11A X1A M2F M1F THIS DWG. Z12C Z10C t 5 EL. COMPO. EL. COMPO. N=5 R1T X3A X4A BOX (2) BOX (1) M2C M1C RED WHT BLK K5R RED WHT BLK BLU 5 A3P X1A F1U RED WHT BLK OUTER SHELL TERMINAL OF M1C, M2C W U V PS GRN WHT BLU BLK K4R K7R Q1RP RED RED K11R A1P A2P A3P PRINTED CIRCUIT BOARD (MAIN) PRINTED CIRCUIT BOARD (SUB 1) PRINTED CIRCUIT BOARD (SUB 2) A4P, A7P A5P, A8P A6P, A9P - X7A MS 3~ 3~ PRINTED CIRCUIT BOARD (ISE FILTER) PRINTED CIRCUIT BOARD (INV) PRINTED CIRCUIT BOARD (FAN) BS1~5 C1 C63, C66 E1HC, E2HC F1U, F2U F1U F1U F400U K1 K2 K3 PUSH BUTTON SWITCH (MODE, SET, RETURN, TEST, RESET) CAPACITOR CAPACITOR (A5P) (A8P) CRANKCASE HEATER (A1P) (A3P) FUSE (T, 3.15A, 250V) (A1P) (A3P) FUSE (T, 3.15A, 250V) (A2P) FUSE (8A, DC650V) (A6P) (A9P) FUSE (T, 6.3A, 250V) (A4P) (A7P) MAGNETIC RELAY (A5P) (A8P) MAGNETIC CONTACTOR (M1C-A5P) (M2C-A8P) MAGNETIC RELAY (A4P) (A7P) K4 H1P~8P HAP K1R K2R K3R K3R K4R K5R K5R K5R K6R K7R K7R K11R L1R, L2R M1C, M2C MAGNETIC CONTACTOR (M1C-A4P) (M2C-A7P) PILOT LAMP (SERVICE MONITOR : ORANGE) [H2P] PREPARE, TEST FLICKERING MALFUNCTION DETECTION---LIGHT UP PILOT LAMP (SERVICE MONITOR-GREEN) (A1P, A2P, A3P) MAGNETIC RELAY (Y4S) MAGNETIC RELAY (Y5S) MAGNETIC RELAY (Y1S) (A1P) MAGNETIC RELAY (Y6S) (A2P) MAGNETIC RELAY (Y8S) MAGNETIC RELAY (Y2S) (A1P) MAGNETIC RELAY (FOR OPTION) (A2P) MAGNETIC RELAY (Y9S) (A3P) MAGNETIC RELAY (Y7S) (A2P) MAGNETIC RELAY (E1HC) (A1P) MAGNETIC RELAY (E2HC) (A3P) MAGNETIC RELAY (Y10S) (A3P) REACTOR MOTOR (COMPRESSOR) M1F, M2F PS Q1RP R10 R50, R59 R90 R95 R1T R1T R2T R31T R32T R4T R5T R6T R7T R8T R9T R10T MOTOR (FAN) SWITCHING POWER SUPPLY (A1P, A3P, A5P, A8P) PHASE REVERSAL DETECT CIRCUIT (A1P) (A3P) RESISTOR (CURRENT SENSOR) (A6P) (A9P) RESISTOR (A5P) (A8P) RESISTOR (CURRENT SENSOR) (A5P) (A8P) RESISTOR (CURRENT LIMITING) (A5P) (A8P) THERMISTOR (AIR) (A1P) THERMISTOR (FIN) (A5P) (A8P) THERMISTOR (HEAT EXC. GAS 1) THERMISTOR (M1C DISCHARGE) THERMISTOR (M2C DISCHARGE) THERMISTOR (HEAT EXC. DEICER 1) THERMISTOR (SUBCOOL HEAT EXC. GAS 1) THERMISTOR (SUBCOOL HEAT EXC. LIQUID) THERMISTOR (HEAT EXC. LIQUID 1) THERMISTOR (SUCTION 1) THERMISTOR (LIQUID 1) THERMISTOR (SUCTION 2) R11T R12T R13T R14T R15T S1NPH S2NPL S1PH, S2PH V1CP V1R V1R V2R X1M X1M X2M X1A~X9A Y1E Y2E Y3E THERMISTOR (HEAT EXC. GAS 2) THERMISTOR (HEAT EXC. DEICER 2) THERMISTOR (SUBCOOL HEAT EXC. GAS 2) THERMISTOR (LIQUID 2) THERMISTOR (HEAT EXC. LIQUID 2) PRESSURE SENSOR (HIGH) PRESSURE SENSOR (LOW) PRESSURE SWITCH (HIGH) SAFETY DEVICES INPUT (A1P) (A3P) DIODE BRIDGE (A5P) (A8P) POWER MODULE (A6P) (A9P) POWER MODULE (A5P) (A8P) TERMINAL STRIP (POWER SUPPLY) TERMINAL STRIP (CONTROL) (A1P) (A3P) TERMINAL STRIP (RELAY) CONNECTOR ELECTRONIC EXPANSION VALVE (MAIN 1) ELECTRONIC EXPANSION VALVE (SUBCOOL 1) ELECTRONIC EXPANSION VALVE (MAIN 2) Y4E Y5E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Y8S Y9S Y10S Z1C~12C Z1F ELECTRONIC EXPANSION VALVE (CHARGE) ELECTRONIC EXPANSION VALVE (SUBCOOL 2) SOLEID VALVE (RMTG) SOLEID VALVE (4 WAY VALVE-HEAT EXC. 1) SOLEID VALVE (RMTL) SOLEID VALVE (HOT GAS) SOLEID VALVE (EV BYPASS 1) SOLEID VALVE (RMTT) SOLEID VALVE (RMTO) SOLEID VALVE (4 WAY VALVE-PIPE) SOLEID VALVE (4 WAY VALVE-HEAT EXC. 2) SOLEID VALVE (EV BYPASS 2) ISE FILTER (FERRITE CORE) ISE FILTER (WITH SURGE ABSORBER) (A4P) (A7P) CONNECTOR FOR OPTIONAL PARTS X7A X9A X37A OPERATION OUTPUT (A2P) POWER SUPPLY (ADAPTER) (A2P) POWER SUPPLY (ADAPTER) (A3P)

333 L1 POWER SUPPLY 3N~ V 50Hz PS TES) 1. THIS WIRING DIAGRAM IS APPLIED ONLY TO THE OUTDOOR UNIT. 2. : FIELD WIRING. 3. : TERMINAL STRIP : CONNECTOR : TERMINAL : PROTECTIVE EARTH (SCREW) 4. WHEN USING THE OPTIONAL ADAPTOR, REFER TO THE INSTALLATION MANUAL OF THE OPTIONAL ADAPTOR. 5. FOR CONNECTION WIRING TO INDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-MULTI TRANSMISSION Q1 Q2, REFER TO THE INSTALLATION MANUAL. 6. HOW TO USE BS1~5, REFER TO "SERVICE PRECAUTION" LABEL ON EL. COMPO. BOX COVER. 7. WHEN OPERATING, DON'T SHORTCIRCUIT THE PROTECTION DEVICE (S1PH). 8. COLORS BLK : BLACK RED : RED BLU : BLUE WHT : WHITE GRN : GREEN. X3A RED WHT BLK BLU K3R Y6S C1 F1U K5R RED BLU BLK HAP A1P X1A P< X3A K6R GRN WHT BLU BLK F400U K3 X401A Z1C N=2 X8A R8T t X12A R9T t X10A X15A X37A X4A X7A R31T t X9A X11A R4T t R5T t BS3 H4P H5P H6P H8P A4P 1 X29A 1 X30A X10A X1A X1M K2 X61A TO TO TO X4A IN/D OUT/D MULTI X23A X22A UNIT UNIT UNIT V1R + - PS X6A X28A F1 F2 F1 F2 Q1 Q2 BLU BLK X21A P1 Z2C WHT K1 WHT L1R N3 Z4C WHT BLK R95 RED BLU BLK WHT 6 P2 P3 5 5 A5P X3A C66 C63 M M + + Y3E Y2E P1 N1 outdoor (Q1) (Q2) 6 M R50 R59 X5A outdoor (F1) (F2) TE)5 Y1E X5A F1U R10 indoor (F1) (F2) X3A + - X4A + R90 X41A V1R - V2R X2A A1P PRINTED CIRCUIT BOARD (MAIN) MAGNETIC RELAY X111A X1A X11A A2P PRINTED CIRCUIT BOARD (SUB) MAGNETIC CONTACTOR (M1C) Z3C t Z5C 5 A3P PRINTED CIRCUIT BOARD (ISE FILTER) MAGNETIC RELAY (Y5S) N=5 R1T X1A X2A A4P MAGNETIC RELAY (Y6S) U V W A5P MAGNETIC RELAY (Y1S)(A1P) MS MS 3~ 3~ BS1~5 MAGNETIC RELAY (Y8S)(A2P) 5 MAGNETIC RELAY (Y2S) M1C M1F MAGNETIC RELAY (Y3S)(A1P) X32A S2NPL X1A X2A A2P A1P X1M X1M X1M Y1E Y2E Y3E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Y8S Z1C~6C Z1F X7A X9A RED WHT BLK MAGNETIC RELAY (FOR OPTION)(A2P) MAGNETIC RELAY (Y7S) MAGNETIC RELAY (E1HC) MAGNETIC RELAY (Y4S) REACTOR MOTOR (COMPRESSOR) MOTOR (FAN) SWITCHING POWER SUPPLY (A1P, A4P) PHASE REVERSAL DETECT CIRCUIT (A1P) RESISTOR (CURRENT SENSOR) RESISTOR RESISTOR (CURRENT SENSOR) EL. COMPO. BOX (FRONT) L1R A4P A5P RED WHT BLK K2R K5R L3 A3P X400A F1U X2A E1HC X15A : * IS CONNECTOR COLOR FOR PRINTED CIRCUIT BOARD. H1P BS1 BS5 HAP TERMINAL OF M1C W U V K3R K7R L1 L2 L3 N TE)4 Y7S Y2S Y3S : * IS CONNECTOR COLOR FOR COMPONENT. : * IS DISCRIMINATION COLOR FOR COMPONENT LEAD WIRE. R2T t R6T t BS2 H7P PRINTED CIRCUIT BOARD (INV) PRINTED CIRCUIT BOARD (FAN) PUSH BUTTON SWITCH (MODE, SET, RETURN, TEST, RESET) CAPACITOR CAPACITOR CRANKCASE HEATER FUSE (T, 3.15A, 250V) (A1P) FUSE (T, 3.15A, 250V) (A2P) FUSE (8A, DC650V) (A5P) FUSE (T, 6.3A, 250V) PILOT LAMP (SERVICE MONITOR : ORANGE) [H2P] PREPARE, TEST FLICKERING MALFUNCTION DETECTION---LIGHT UP PILOT LAMP (SERVICE MONITOR-GREEN) (A1P) (A2P) MAGNETIC RELAY MAGNETIC CONTACTOR (M1C) K3 K4 K1R K2R K3R K3R K4R K5R K5R K6R K7R K11R L1R M1C M1F PS Q1RP R10 R50, R59 R90 S1NPH X31A X18A R1T t TERMINAL STRIP (POWER SUPPLY) TERMINAL STRIP (CONTROL) (A1P) ELECTRONIC EXPANSION VALVE (MAIN) ELECTRONIC EXPANSION VALVE (CHARGE) ELECTRONIC EXPANSION VALVE (SUBCOOL) SOLEID VALVE (RMTG) SOLEID VALVE (4 WAY VALVE) (PIPE) SOLEID VALVE (4 WAY VALVE) (HEAT EXC.) SOLEID VALVE (RMTL) SOLEID VALVE (HOT GAS) SOLEID VALVE (EV BYPASS) SOLEID VALVE (RMTO) SOLEID VALVE (RMTT) ISE FILTER (FERRITE CORE) ISE FILTER (WITH SURGE ABSORBER) OPERATION OUTPUT (A2P) POWER SUPPLY (ADOPTER) (A2P) RED WHT BLK K11R Z6C K4 X402A X4A X5A X16A X20A S1PH V1CP H3P BS4 C1 C63, C66 E1HC F1U, F2U F1U F1U F400U H1P~8P HAP K1 K2 RESISTOR (CURRENT LIMITING) THERMISTOR (AIR) (A1P) THERMISTOR (FIN) (A4P) THERMISTOR (HEAT EXC. GAS) THERMISTOR (M1C DISCHARGE) THERMISTOR (HEAT EXC. DEICER) THERMISTOR (SUB COOL HEAT EXC. GAS) THERMISTOR (SUB COOL HEAT EXC. LIQUID) THERMISTOR (HEAT EXC. LIQUID) THERMISTOR (SUCTION) THERMISTOR (LIQUID) PRESSURE SENSOR (HIGH) PRESSURE SENSOR (LOW) PRESSURE SWITCH (HIGH) SAFETY DEVICES INPUT DIODE BRIDGE (A4P) POWER MODULE (A5P) POWER MODULE CONNECTOR (M1F) CONNECTOR (Y1E) A3P (BACK) K4R X403A Y5S X1A TE)2 X9A F2U X8A Y4S R7T t H2P X1M CONNECTOR FOR OPTIONAL PARTS K1R X1M L2 N Z1F A2P X3A Y8S X7A X11A Q1RP RED Y1S * ** R95 R1T R1T R2T R31T R4T R5T R6T R7T R8T R9T S1NPH S2NPL S1PH V1CP V1R V1R V2R X1A, X2A X3A 3D055307E

334 W A4P + P1 WHT L1R WHT P2 X11A X111A t R1T TES) 1. THIS WIRING DIAGRAM IS APPLIED ONLY TO THE OUTDOOR UNIT. 2. : FIELD WIRING. 3. : TERMINAL STRIP : CONNECTOR : TERMINAL : PROTECTIVE EARTH (SCREW) 4. WHEN USING THE OPTIONAL ADAPTOR, REFER TO THE INSTALLATION MANUAL OF THE OPTIONAL ADAPTOR. 5. FOR CONNECTION WIRING TO INDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-MULTI TRANSMISSION Q1 Q2, REFER TO THE INSTALLATION MANUAL. 6. HOW TO USE BS1 ~ 5, REFER TO "SERVICE PRECAUTION" LABEL ON EL. COMPO. BOX COVER. 7. WHEN OPERATING, DON'T SHORTCIRCUIT THE PROTECTION DEVICE (S1PH, S2PH). 8. COLORS BLK : BLACK RED : RED BLU : BLUE WHT : WHITE GRN : GREEN. A5P P1 X5A R31T R32T R2T R4T R5T R6T R7T t t t t t t t 1 X9A 1 PS outdoor (Q1) (Q2) outdoor (F1) (F2) indoor (F1) (F2) X3A 6 Y2E 6 M Y1E TERMINAL OF M1C, M2C W U V LAYOUT OF M1C, M2C, M1F EL. COMPO. BOX M1F M1C M2C OUTER SHELL EL. COMPO. BOX A6P K2M X3A WHT BLK RED N K4 F400U K3 X401A Y5S R8T t M2C - X20A F1U X3A :* IS CONNECTOR COLOR FOR PRINTED CIRCUIT BOARD. :* IS CONNECTOR COLOR FOR COMPONENT. :* IS DISCRIMINATION COLOR FOR COMPONENT LEAD WIRE. X30A X23A BLU RED V 3 4 X1A T1A A6P C66 + X1A Z5C Y1S TO IN/D UNIT Y3S E1HC X1M L1R K3R Z7C L1 Z6C Z1F RED BLU BLK U R59 X10A K2 X1A M1F - H8P X1A A2P X2A RED WHT BLK BLU Y6S X12A R50 C63 + F1U + R10 A1P X1A X26A F1 F2 F1 F2 Q1 E2HC X15A Y4S H7P HAP A1P X1M RED WHT BLK RED WHT BLK RED WHT BLK K1R GRN WHT BLU BLK K4R K8R L2 L3 POWER SUPPLY 3N ~ V 50Hz X3A X7A X8A Y7S X10A X15A Z8C N= U V - R90 W R95 V2R X2A K1R X5A X2A X4A X7A X1M X22A BLK X21A X31A WHT WHT BLU BLK 5 5 M Y3E M TE) 5 K2R X402A C1 X1A TE)2 X9A K2M X5A BLK RED V1R S2PH K2M A1 WHT TO OUT/D UNIT Q2 H3P H4P H5P BS3 A5P K6R X403A X4A X5A HAP F1U X16A P3 Z2C Z4C X3A N1 5 5 X28A A2 TO MULTI UNIT X11A H1P BS2 BS5 X18A A3P K3R X1M L3 X400A A2P Y8S TE) 4 R9T t M1C X61A X4A X6A X4A X2A X37A BS1 X32A R1T S1NPH S2NPL t (BACK) K5R K7R Z3C N=5 X41A Q1RP Y2S H6P (FRONT) K5R L2 N A3P X11A V1R K1 PS X1A F2U S1PH X8A X29A X12A H2P A4P K11R L1 Z1C N=2 M 3~ N3 MS MS 3~ 3~ A1P A2P A3P A4P A5P A6P BS1 ~ 5 C1 C63, C66 E1HC, E2HC F1U, F2U F1U F1U F400U H1P~8P HAP K1 K2 P< P< V1CP RED * ** BS4 PRINTED CIRCUIT BOARD (MAIN) PRINTED CIRCUIT BOARD (SUB) PRINTED CIRCUIT BOARD (ISE FILTER) PRINTED CIRCUIT BOARD (INV) PRINTED CIRCUIT BOARD (FAN) PRINTED CIRCUIT BOARD (CURRENT SENSOR) PUSH BUTTON SWITCH (MODE, SET, RETURN, TEST, RESET) CAPACITOR CAPACITOR CRANKCASE HEATER FUSE (T, 3.15A, 250V) (A1P) FUSE (T, 3.15A, 250V) (A2P) FUSE (8A, DC650V) (A5P) FUSE (T, 6.3A, 250V) (A3P) PILOT LAMP (SERVICE MONITOR: ORANGE) [H2P] PREPARE, TEST FLICKERING MALFUNCTION DETECTION --- LIGHT UP PILOT LAMP (SERVICE MONITOR-GREEN) (A1P) (A2P) MAGNETIC RELAY MAGNETIC CONTACTOR (M1C) K3 K4 K2M K1R K1R K2R K3R K3R K4R K5R K5R K6R K7R K8R K11R L1R M1C, M2C M1F PS Q1RP R10 MAGNETIC RELAY MAGNETIC CONTACTOR (M1C) MAGNETIC CONTACTOR (M2C) MAGNETIC RELAY (K2M) (A1P) MAGNETIC RELAY (Y5S) (A2P) MAGNETIC RELAY (Y6S) MAGNETIC RELAY (Y1S) (A1P) MAGNETIC RELAY (Y8S) (A2P) MAGNETIC RELAY (Y2S) MAGNETIC RELAY (Y3S) (A1P) MAGNETIC RELAY (FOR OPTION) (A2P) MAGNETIC RELAY (Y7S) MAGNETIC RELAY (E1HC) MAGNETIC RELAY (E2HC) MAGNETIC RELAY (Y4S) REACTOR MOTOR (COMPRESSOR) MOTOR (FAN) SWITCHING POWER SUPPLY (A1P, A4P) PHASE REVERSAL DETECT CIRCUIT RESISTOR (CURRENT SENSOR) R50, R59 R90 R95 R1T R1T R2T R31T, R32T R4T R5T R6T R7T R8T R9T S1NPH S2NPL S1PH, S2PH T1A V1CP V1R V1R V2R RESISTOR RESISTOR (CURRENT SENSOR) RESISTOR (CURRENT LIMITING) THERMISTOR (AIR) (A1P) THERMISTOR (FIN) (A4P) THERMISTOR (HEAT EXC. GAS) THERMISTOR (M1C, M2C DISCHARGE) THERMISTOR (HEAT EXC. DEICER) THERMISTOR (SUB COOL HEAT EXC. GAS) THERMISTOR (SUB COOL HEAT EXC. LIQUID) THERMISTOR (HEAT EXC. LIQUID) THERMISTOR (SUCTION) THERMISTOR (LIQUID) PRESSURE SENSOR (HIGH) PRESSURE SENSOR (LOW) PRESSURE SWITCH (HIGH) CURRENT SENSOR SAFETY DEVICES INPUT DIODE BRIDGE (A4P) POWER MODULE (A5P) POWER MODULE X1A, X2A X3A X1M X1M Y1E Y2E Y3E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Y8S Z1C ~ 8C Z1F CONNECTOR (M1F) CONNECTOR (Y1E) TERMINAL STRIP (POWER SUPPLY) TERMINAL STRIP (CONTROL) (A1P) ELECTRONIC EXPANSION VALVE (MAIN) ELECTRONIC EXPANSION VALVE (CHARGE) ELECTRONIC EXPANSION VALVE (SUBCOOL) SOLEID VALVE (RMTG) SOLEID VALVE (4 WAY VALVE) (PIPE) SOLEID VALVE (4 WAY VALVE) (HEAT EXC.) SOLEID VALVE (RMTL) SOLEID VALVE (HOT GAS) SOLEID VALVE (EV BYPASS) SOLEID VALVE (RMTO) SOLEID VALVE (RMTT) ISE FILTER (FERRITE CORE) ISE FILTER (WITH SURGE ABSORBER) CONNECTOR FOR OPTIONAL PARTS X7A OPERATION OUTPUT (A2P) X9A POWER SUPPLY (ADOPTER) (A2P) 3D055308E

335 TERMINAL OF M1C~M3C W U V LAYOUT OF M1C~M3C, M1F, M2F EL. COMPO. BOX M2F M1F M1C M2C M3C OUTER SHELL RED WHT BLK GRN WHT BLU BLK K8R Z7C L2 3 4 L3 X1A T1A A6P X1A X3A A2P X2A X4A A1P X1M RED WHT BLK RED WHT BLK RED WHT BLK BLU K2R K5R RED L A6P A8P X1M K2M K3M X5A RED WHT BLK K3R K5R N (FRONT) L1R A4P A5P BLK K4R K7R L1 U 1 2 W X1A T1A A8P A7P RED WHT BLK RED K1R K9R X1M K2M Z8C N=5 L1 V L3 K3M POWER SUPPLY Z1C C1 3N~ V 50Hz A1P N=2 RED X1A F1U BLU PS BLK F2U Q1RP A2P Z6C X1A S1PH P< X7A X8A X9A X11A X12A X13A X15A H1P H2PH3P H4P H5P H6P H7P H8P TE) 2 HAP A3P X9A X2A E1HC E2HC E3HC F1U BS1 BS2BS3 BS4 BS5 HAP P< Y1S Y2S Y3S Y4S X400A S2PH X10A X3A Z1F X37A : * IS CONNECTOR COLOR FOR PRINTED CIRCUIT BOARD. X7A X8A X11A X16A X15A * X3A X4A P< X12A S3PH X20A ** : * IS CONNECTOR COLOR FOR COMPONENT. K4 : * IS DISCRIMINATION COLOR FOR COMPONENT LEAD WIRE. F400U X4A TE) 4 K3 X402A Y5S Y6S Y7S R8T R9T V1CP X401A X403A R31T R32T R33T R2T R4T R5T R6T R7T t t A1 K1R RED t t t t t t t t X26A K2M WHT X5A X25A A2 A4P K2R 1 X29A 1 A1 X30A RED X10A X1A X1M X61A K3M K2 WHT X6A TO TO TO X4A IN/D OUT/D MULTI A2 X23A X22A UNIT UNIT UNIT V1R + - PS X6A X28A F1 F2 F1 F2 Q1 Q2 BLU BLK X21A X32A X31A X18A P1 K1 Z2C WHT R1T WHT L1R N3 Z4C WHT BLK BLK S1NPH S2NPL BLU BLK R95 t WHT RED RED 6 P2 P3 5 5 A5P A7P X5A C66 C63 M M + + Y3E Y2E P1 P2 N1 N2 P1 N1 outdoor (Q1) (Q2) 6 R50 R59 X5A X51A X5A outdoor (F1) (F2) TE) 5 M Y1E X5A F1U R10 F1U R10 indoor (F1) (F2) X3A + - X4A X3A + - X4A R90 X41A V1R V1R + - V2R X2A X2A A1P PRINTED CIRCUIT BOARD (MAIN) K3 MAGNETIC RELAY R50, R59 RESISTOR X111A X1A X1A X11A Z3C t Z5C 5 Z9C A2P PRINTED CIRCUIT BOARD (SUB) K4 MAGNETIC CONTACTOR (M1C) R90 RESISTOR (CURRENT SENSOR) 5 RED RED 3 5 N=5 R1T A3P PRINTED CIRCUIT BOARD (ISE FILTER) K2M, K3M MAGNETIC CONTACTOR (M2C, M3C) R95 RESISTOR (CURRENT LIMITING) X1A X2A X3A X4A A4P PRINTED CIRCUIT BOARD (INV) K1R, K2R MAGNETIC RELAY (K2M, K3M) (A1P) R1T THERMISTOR (AIR) (A1P) 4 6 WHT WHT U V W RED A5P, A7P PRINTED CIRCUIT BOARD (FAN) K1R MAGNETIC RELAY (Y5S) (A2P) R1T THERMISTOR (FIN) (A4P) MS 3~ MS 3~ MS 5 5 A6P, A8P PRINTED CIRCUIT BOARD (CURRENT SENSOR) K2R MAGNETIC RELAY (Y6S) R2T THERMISTOR (HEAT EXC. GAS) 3~ M1C M1F M2F BS1~5 PUSH BUTTON SWITCH K3R MAGNETIC RELAY (Y1S) R31~33T THERMISTOR (M1C~3C DISCHARGE) V W (MODE, SET, RETURN, TEST, RESET) K4R MAGNETIC RELAY (Y2S) R4T THERMISTOR (HEAT EXC. DEICER) C1 CAPACITOR K5R MAGNETIC RELAY (Y3S) (A1P) R5T THERMISTOR (SUBCOOL HEAT EXC. GAS) M3C C63, C66 CAPACITOR K5R MAGNETIC RELAY (FOR OPTION) (A2P) R6T THERMISTOR (SUBCOOL HEAT EXC. LIQUID) E1HC~3HC CRANKCASE HEATER K6R MAGNETIC RELAY (Y7S) R7T THERMISTOR (HEAT EXC. LIQUID) F1U, F2U FUSE (T, 3.15A, 250V) (A1P) K7R MAGNETIC RELAY (E1HC) R8T THERMISTOR (SUCTION) F1U FUSE (T, 3.15A, 250V) (A2P) K8R MAGNETIC RELAY (E2HC) R9T THERMISTOR (LIQUID) F1U FUSE (8A, DC650V) (A5P, A7P) K9R MAGNETIC RELAY (E3HC) S1NPH PRESSURE SENSOR (HIGH) F400U FUSE (T, 6.3A, 250V) (A3P) K11R MAGNETIC RELAY (Y4S) S2NPL PRESSURE SENSOR (LOW) H1P~8P PILOT LAMP (SERVICE MONITOR : ORANGE) L1R REACTOR S1PH~3PH PRESSURE SWITCH (HIGH) [H2P] PREPARE, TEST FLICKERING M1C~3C MOTOR (COMPRESSOR) T1A CURRENT SENSOR (A6P, A8P) MALFUNCTION DETECTION---LIGHT UP M1F, M2F MOTOR (FAN) V1CP SAFETY DEVICES INPUT HAP PILOT LAMP (SERVICE MONITOR-GREEN) (A1P) (A2P) PS SWITCHING POWER SUPPLY (A1P, A4P) V1R DIODE BRIDGE (A4P) K1 MAGNETIC RELAY Q1RP PHASE REVERSAL DETECT CIRCUIT V1R POWER MODULE (A5P, A7P) K2 MAGNETIC CONTACTOR (M1C) R10 RESISTOR (CURRENT SENSOR) (A5P, A7P) V2R POWER MODULE (BACK) WHT M2C N U A3P K6R K11R Z10C N=5 M 3~ M 3~ TES) 1. THIS WIRING DIAGRAM IS APPLIED ONLY TO THE OUTDOOR UNIT. 2. : FIELD WIRING. 3. : TERMINAL STRIP : CONNECTOR : TERMINAL : PROTECTIVE EARTH (SCREW) 4. WHEN USING THE OPTIONAL ADAPTOR, REFER TO THE INSTALLATION MANUAL OF THE OPTIONAL ADAPTOR. 5. FOR CONNECTION WIRING TO INDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-MULTI TRANSMISSION Q1 Q2, REFER TO THE INSTALLATION MANUAL. 6. HOW TO USE BS1~5, REFER TO "SERVICE PRECAUTION" LABEL ON EL. COMPO. BOX COVER. 7. WHEN OPERATING, DON'T SHORTCIRCUIT THE PROTECTION DEVICE (S1~3PH). 8. COLORS BLK : BLACK RED : RED BLU : BLUE WHT : WHITE GRN : GREEN. EL. COMPO. BOX X1A~4A X5A X1M X1M Y1E Y2E Y3E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Z1C~10C Z1F CONNECTOR (M1F, M2F) CONNECTOR (Y1E) TERMINAL STRIP (POWER SUPPLY) TERMINAL STRIP (CONTROL) (A1P) ELECTRONIC EXPANSION VALVE (MAIN) ELECTRONIC EXPANSION VALVE (CHARGE) ELECTRONIC EXPANSION VALVE (SUBCOOL) SOLEID VALVE (RMTG) SOLEID VALVE (4 WAY VALVE) (PIPE) SOLEID VALVE (4 WAY VALVE) (HEAT EXC.) SOLEID VALVE (RMTL) SOLEID VALVE (HOT GAS) SOLEID VALVE (EV BYPASS) SOLEID VALVE (RMTO) ISE FILTER (FERRITE CORE) ISE FILTER (WITH SURGE ABSORBER) CONNECTOR FOR OPTIONAL PARTS X7A X9A OPERATION OUTPUT (A2P) POWER SUPPLY (ADOPTER) (A2P) 3D055309E

336 Main switch Power supply TES 1) All wiring, components and materials to be procured on the site must comply with the applicable local and national codes. 2) Use copper conductors only. 3) As for details, see wiring diagram. 4) Install circuit breaker for safetyu. 5) All field wiring and components must be provided by licensed electrician. OUTDOOR UNITS Switch Fuse Power supply Main switch 2 Wires cable (transmission line) 2 Wires cable (transmission line) Switch Switch 2 Wires cable Fuse (power line) Fuse Switch Fuse 2 Wires cable (power line) BS UNITS 2 Wires cable (transmission line) 2 Wires cable (power line) 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) Switch Fuse Switch Fuse 2 Wires cable (power line) INDOOR UNITS 2 Wires cable (power line) 6) Unit shall be grounded in compliance with the apllicable local and national codes. 7) Wiring shown are general points-of-connection guides only and are not intended for or to include all details for a specific installation. 8) Be sure to install the switch that can interrupt all the power line of each equipment. 9) Install the main switch that can interrupt all the power souces in an integrated manner because this system consists of the equipment utilizing the multiple power sources. 10) If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on and off while the product is operating, attach a reversed phase protection circuit locally. Running the product in rversed phase may break the compressor and other parts. 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) Switch Switch Fuse Fuse 2 Wires cable (power line) 2 Wires cable (power line) Cooling only unit 3D057764A

337 Power supply Main switch Switch Power supply Fuse Main switch 2 Wires cable (transmission line) 2 Wires cable (power line) Switch Fuse Switch Fuse 2 Wires cable (power line) TES 1) All wiring, components and materials to be procured on the site must comply with the applicable local and national codes. 2) Use copper conductors only. 3) As for details, see wiring diagram. 4) Install circuit breaker for safety. 5) All field wiring and components must be provided by licensed electrician. When the power source is supplied to each outdoor unit individually OUTDOOR UNITS 2 Wires cable (transmission line) [UNIT 1] [UNIT 2] Switch Fuse 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (power line) BS UNITS Switch Fuse 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (power line) Switch Fuse INDOOR UNITS Switch Fuse 2 Wires cable (power line) Switch Fuse 2 Wires cable (power line) 6) Unit shall be grounded in compliance with the apllicable local and national codes. 7) Wiring shown are general points-of-connection guides only and are not intended for or to include all details for a specific installation. 8) Be sure to install the switch and the fuse to the power line of each equipment. 9) Install the main switch that can interrupt all the power souces in an integrated manner because this system consists of the equipment utilizing the multiple power sources. 10) The capacity of UNIT1 must be larger than UNIT2 when the power source is connected in series between the units. 11) If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on and off while the product is operating, attach a reversed phase protection circuit locally. Running the product in rversed phase may break the compressor and other parts. Power supply When the power source is connected in series between the units Main switch OUTDOOR UNITS 2 Wires cable (transmission line) [UNIT 1] [UNIT 2] Switch Fuse Power supply Main switch 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (power line) BS UNITS Switch Fuse 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (power line) COOLING ONLY UNIT 2 Wires cable (power line) Switch Fuse INDOOR UNITS Switch Fuse 2 Wires cable (power line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) COOLING ONLY UNIT 3D057762

338 TES Power supply Main switch Switch Fuse Switch Fuse Power supply Main switch 2 Wires cable (transmission line) 2 Wires cable (power line) Switch Fuse Switch Fuse 2 Wires cable (power line) 1) All wiring, components and materials to be procured on the site must comply with the applicable local and national codes. 2) Use copper conductors only. 3) As for details, see wiring diagram. 4) Install circuit breaker for safety. 5) All field wiring and components must be provided by licensed electrician. 6) Unit shall be grounded in compliance with the apllicable local and national codes. 7) Wiring shown are general points-of-connection guides only and are not intended for or to include all details for a specific installation. 8) Be sure to install the switch tand the fuse to the power line of each equipment. 9) Install the main switch that can interrupt all the power souces in an integrated manner because this system consists of the equipment utilizing the multiple power sources. 10) The capacity of UNIT1 must be larger than UNIT2 when the power source is connected in series between the units. 11) If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on and off while the product is operating, attach a reversed phase protection circuit locally. Running the product in rversed phase may break the compressor and other parts. When the power source is supplied to each outdoor unit individually Power supply When the power source is connected in series between the units OUTDOOR UNITS Main switch OUTDOOR UNITS 2 Wires cable (transmission line) [UNIT 1] [UNIT 2] 2 Wires cable (transmission line) [UNIT 3] 2 Wires cable (transmission line) [UNIT 1] [UNIT 2] Switch Fuse Switch Fuse Power supply Main switch 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (power line) BS UNITS Switch Fuse 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (power line) BS UNITS Switch Fuse 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (transmission line) 2 Wires cable (transmission line) 2 Wires cable (power line) Switch Fuse INDOOR UNITS Switch Fuse 2 Wires cable (power line) Switch Fuse 2 Wires cable (power line) Switch Fuse 2 Wires cable (power line) COOLING ONLY UNIT Switch Fuse 2 Wires cable (power line) 2 Wires cable (power line) Switch Fuse INDOOR UNITS Switch Fuse 2 Wires cable (power line) Switch Fuse 2 Wires cable (power line) 2 Wires cable (transmission line) [UNIT 3] 2 Wires cable (transmission line) Switch Fuse 2 Wires cable (power line) COOLING ONLY UNIT 3D057763

339 20~125-class (22~140-class) indoor control box /220V ~50/60Hz receiver/display unit Input from outside (note 4) Central remote control (note 2) wired remote control 20~63-class (22~71-class) 80~125-class (90~140-class) INDOOR UNIT A1P Printed circuit board A2P Printed circuit board C1 Capacitor F1U Fuse (T, 5A, 250V) F2U Field Fuse HAP Light emitting diode (service monitor green) KPR Magnetic relay (M1P) L1 Coil M1F Motor (indoor fan) M1P Motor (drain pump) M1S PS Q1DI R1T R2T R3T S1L X1M X2M Y1E Z1C Motor (swing flap) Power supply circuit Earth leak detector Thermistor (air) Thermistor coil Thermistor (Header) Float switch Terminal strip Terminal strip Electronic expansion valve Ferrite core RECIEVER/DISPLAY UNIT (ATTACHED TO WIRELESS REMOTE CONTROL) A3P Printed circuit board A4P Printed circuit board BS1 Push button (on/off) H1P Light emitting diode (on-red) H2P Light emitting diode (timer-green) H3P Light emitting diode (filter sign-red) H4P Light emitting diode (defrost -orange) SS1 Selector switch (main-sub) SS2 Selector switch (wireless address set) CONNECTOR FOR OPTIONAL PARTS X24A Connector (infrared remote control) X33A Connector (adapter for wiring) X35A Connector (group control adapter) WIRED REMOTE CONTROL R1T Thermistor (Air) SS1 Selector switch (main/sub) TES 1. : Terminal strip, : Connector : Field Wiring 2. In case of using a central remote control, connect it to the unit in accordance with the attached installation manual. 3. X24A, X33A and X35A are connected when the optional accesories are being used. 4. When connecting the input wires from outside, forced off or on/off control operation can be selected by the remote control. See installation manual for more details. 5. Confirm the method of setting the selector switch (SS1, SS2) by installation manual and engineering data, etc. 6. Color legend: RED: RED BLK:BLACK WHT:WHITE YLW: YELLOW GRN:GREEN ORG: ORANGE BRN: BROWN GRY: GREY BLU:BLUE PNK: PINK 3TW B

340 20,25,32,40,50 class (22,28,36,45,56 class) Power supply V ~ 50Hz (see note 3) Input from outside (see note 4) Transmission wiring central remote control (see note 2) wired remote control Switch box (see note 3) A1P Printed circuit board C1 Capacitor (M1F) F1U Fuse ( B, 5A, 250V) F2U Field fuse HAP Light emitting diode (service monitor green) KPR Magnetic relay (M1P) M1F Motor (indoor fan) M1P Motor (drain pump) M1S Motor (swing flap) Q1DI Field earth leak detector (max. 300mA) Q1M Thermal protector (M1F embedded) R1T Thermistor (Air) R2T Thermistor (Coil-Liquid) R3T Thermistor (Coil-Gas) S1L Float switch : Terminal : Connector : Wire clamp : Field wiring T1R Transformer ( /22V) V1TR Triac X1M Terminal strip X2M Terminal strip Y1E Electronic expansion valve Wired remote control R1T Thermistor SS1 Selector switch (main/sub) Infrared remote control (receiver/display unit) A3P Printed circuit board A4P Printed circuit board BS1 Push button (on/off) H1P Light emitting diode (On-red) H2P Light emitting diode (Timer-green) H3P Light emitting diode (Filter sign-red) H4P Light emitting diode (defrost-orange) SS1 Selector switch (main/sub) SS2 Selector switch (wireless address set) connector for optional parts X16A Connector (adapter for wire) X18A Connector (on/off) (wiring adapter for electrical appendices) RED: RED BLK: BLACK WHT: WHITE YLW: YELLOW PNK: PINK ORG: ORANGE GRN: GREEN BLU: BLUE TES 1. In case of using a central remote control, connect it to the unit in accordance to the attached installation manual. 2. X23A is connected when the infrared remote control kit is being used. 3. When connecting the input wires from outside, forced off or on/off control operation can be selected by the remote control. In details, refer to the installation manual attached to the unit. 4. Remote control model varies according to the combination system. See technical data and catalogs, etc. before connecting. 3TW B

341 20,25,32,63 class (22,28,36,71 class) indoor Switch box Input from outside (note 3) To central remote control (note 1) Wired remote control (Note 2) Note 2 Receiver / display unit L N Field wiring : Live : Neutral : Connector : Wire clamp : Protective earth (screw) Colors BLK : BLACK BLU : BLUE BRN : BROWN ORG : ORANGE PNK : PINK RED : RED WHT : WHITE YLW : YELLOW 33H Float switch 33S Limit switch (swing flap) A1P Printed circuit board C1R Capacitor (M1F) F1T Thermal fuse (152 C) (M1F embedded) F1U Fuse (250V, 5A) F2U Field fuse HAP Light emitting diode (service monitor-green) M1F Motor (indoor fan) M1S Motor (swing flap) M1P Motor (drain pump) R1T Thermistor (air) TES R2T, R3T Thermistor (coil) Q2E Earth leak detector RyA Magnetic relay (M1S) RyF1-3 Magnetic relay (M1F) RyP Magnetic relay (M1P) T1R Transformer ( V/22V) X1M Terminal strip (power) X2M Terminal strip (control) Y1E Electronic expansion valve Receiver / display unit (attached to infrared remote control A2P, A3P Printed circuit board BS On/off button H1P Light emitting diode (on-red) H2P Light emitting diode (timer-green) H3P Light emitting diode (filter sign-red) H4P Light emitting diode (defrost-orange) SS1 Selector switch (main/sub) SS2 Selector switch (wireless address set) Connector for optional parts X18A Connector (wiring, adapter for electrical appendices) X23A Connector (infrared remote control) 1. When using a central remote control, see manual for connection to the unit. 2. X23A is connected when the infrared remote control kit is used. 3. When connecting the input wires from outside, forced off or on/off control operation can be selected by the remote control. For more details see installation manual. 4. Use copper conductors only. 2TW D

342 40,50,80,125 class 45,56,90,140 class) indoor Switch box Colors BLK : BLACK BLU : BLUE BRN : BROWN ORG : ORANGE PNK : PINK RED : RED WHT : WHITE YLW : YELLOW Input from outside (note 3) To central remote control (note 1) Wired remote control (Note 2) Field wiring L N : Live : Neutral : Connector : Wire clamp : Protective earth (screw) Note 2 Receiver / display unit 33H Float switch 33S Limit switch (swing flap) A1P Printed circuit board C1R Capacitor (M1F) F1T Thermal fuse (152 C) (M1F embedded) F1U Fuse (250V, 5A) F2U Field fuse HAP Light emitting diode (service monitor-green) M1F Motor (indoor fan) M1S Motor (swing flap) M1P Motor (drain pump) R1T Thermistor (air) R2T, R3T Thermistor (coil) Q2E Earth leak detector RyA Magnetic relay (M1S) RyF1-3 Magnetic relay (M1F) RyP Magnetic relay (M1P) T1R Transformer ( V/22V) X1M Terminal strip (power) X2M Terminal strip (control) Y1E Electronic expansion valve Receiver / display unit (attached to infrared remote control A2P, A3P Printed circuit board BS On/off button H1P H2P H3P H4P SS1 SS2 X18A X23A Light emitting diode (on-red) Light emitting diode (timer-green) Light emitting diode (filter sign-red) Light emitting diode (defrost-orange) Selector switch (main/sub) Selector switch (wireless address set) Connector for optional parts Connector (wiring, adapter for electrical appendices) Connector (infrared remote control) TES 1. When using a central remote control, see manual for connection to the unit. 2. X23A is connected when the infrared remote control kit is used. 3. When connecting the input wires from outdoor, forced off or on/off control operation can be selected by the remote control. For more details see installation manual. 2TW D

343 INDOOR UNIT A1P Printed circuit board A2P Terminal board C1 Capacitor (M1F) F1U Fuse (, 5A, 250V) HAP Light emitting diode (service monitor-green) K1R-K3R Magnetic relay (M1F) KAR Magnetic relay (M1S) KPR Magnetic relay (M1P) M1F Motor (Indoor fan) M1P Motor (Drain pump) M1S Motor (Swing flap) Q1M Thermo switch M1F) embedded) R1T Thermistor (Air) R2T-R3T Thermistor (Coil) S1L Float switch S1Q Limit switch (Swing flap) T1R Transformer ( V/22V) X1M Terminal block (Power) X2M Terminal block (Control) Y1E Electonic expansion valve WIRED REMOTE CONTROL R1T Thermistor (Air) SS1 Selector switch (Main/Sub) CONNECTOR FOR OPTIONAL PARTS X16A Connector (Adapter for wiring) X18A Connector (Wiring adapter for electorical appendices) Note-5 TES 1. :Terminal block : Connector : Terminal 2. : Field wiring 3. In case using central remote control, connect it to the unit in accordance with the attached instruction manual. 4. When connecting the input wires from outside, forced off or on/off control operation can be selected by remote control. In details, refer to the installation manual attached the unit. 5. In case high E.S.P. operation, change over the wiring connection from X2A to X3A. 6. Symbols shows as follows: PNK:PINK WHT:WHITE YLW:YELLOW ORG:ORANGE BLU:BLUE BLK:BLACK RED:RED BRN:BROWN GRY:GRAY 7. Use copper conductors only Power supply Electric parts box Note 4 Input from outside Note 3 Transmission wiring central remote control Wired remote control (Optional accessory) 3D039564C

344 A1P Printed circuit board C1 Capacitor (M1F) F1U Fuse (F5A/250V) HAP Light emitting diode (service monitor-green) KPR Magnetic relay (M1P) M1F Motor (Indoor fan) M1P Motor (Drain pump) Q1M Thermal protector (M1F) embedded) R1T Thermistor (Air) R2T Thermistor (Coil 1) R3T Thermistor (Coil-2) S1L Float switch T1R Transformer (220V/22V) V1TR Phase control circuit X1M Terminal block X2M Terminal block Y1E Electonic expansion valve Z1C-Z2C Noise filter (Ferrite core) WIRED REMOTE CONTROL R1T Thermistor (Air) SS1 Selector switch (Main/Sub) CONNECTOR FOR OPTIONAL PARTS X16A Connector (Adapter for wiring) X18A Connector (Wiring adapter for electorical appendices) Power supply TES 1. : Terminal : Connector Control box 2. : Field wiring 3. In case using central remote control, connect it to the unit in accordance with the attached installation manual. 4. Remote control model varies according to the combination system, confirm engineering materials and catalogs, etc. before connecting. 5. When connected the input wires from outside, forced off or on/off control operation can be selected by remote control. In details, refer to the installation manual attached the unit. 6. Symbols shows as follows: RED:RED BLK:BLACK WHT:WHITE YLW:YELLOW PRP:PURPLE GRY:GRAY BLU:BLUE PNK:PINK RG:ORANGE GRN:GREEN Note 5 Input from outside Note 3 Transmission wiring central remote control Wired remote control 3D045500C

345 L : Live N : Neutral : Connector : Wire clamp : Protective earth (screw) Field wiring indoor Terminals operation indicator Compressor operation Fan operation Adaptor for wiring Switch box Switch box cover Note 3 input from outside central remote control note 1 20,25 class (22,28 class) Wired remote control A1P Printed circuit board C1R Capacitor (Fan) F1U Fuse (250V, 10A) F2U Field fuse HAP Light emitting diode (service monitor-green) M1F Motor (fan) Q1E Earth leak detector R1T Thermistor (air) R2T, R3T Thermistor (refrigerant) RyF1-3 T1R X1M X2M Y1E J1EH K1R Magnetic relay (fan) Adapter for wiring Transformer RyC, RyF Magnetic relay ( V/22V) RyH Magnetic relay (J1EH) Terminal strip (power) F1U, F2U Fuse (250V, 5A) Terminal strip (control) X1A, X2A Connector (wiring adapter) Electronic expansion valve Optional parts Electric heater Magnetic relay (J1EH) X1M X16A X18A Terminal strip Connector for optional parts Connector (wiring adapter) Connector (wiring adapter for electrical appendices Colors: BLK : BLACK BLU : BLUE BRN : BROWN ORG : ORANGE PNK : PINK WHT : WHITE YLW : YELLOW RED : RED TES 1. Use copper conductors only. 2. When using the central remote control, see manual for connection to the unit. 3. When installing the electric heater, change the wiring for the heater circuit. The main power supply has to be supplied independently. 4. When connecting the input wires from outside, forced off or on/off operation can be selected by the remote control. See installation manual for details. 2TW E

346 1N~50Hz 230V 20~63 CLASS (22~71 CLASS) Indoor Terminals for oparation indicator Compressor operation Fan operation Adapter for wiring SWITCH BOX COLORS: BLK : BLACK BLU : BLUE BRN : BROWN ORG : ORANGE PNK : PINK RED : RED WHT : WHITE YLW : YELLOW Low E.S.P. Operation TE 3 TE 5 Input from outside Central remote control TE 2 Wired remote control Seperate power supply 1N~50Hz 230V High E.S.P. Operation TE 4 (20~32 CLASS) (22~36 CLASS) (40~62 CLASS) (45~71 CLASS) 33H Float switch A1P Printed circuit board A2P Therminal board C1R Capacitor (M1F) F1U Fuse (250V, 5A) F2U Field fuse HAP Light emitting diode (service monitor-green) M1F Motor (fan) M1P Motor (drain pump) Q2E Earth leak detector R1T R2T,R3T RyF1-3 RyP T1R X1M X2M Y1E Thermistor (air) Thermistor (refrigerant) Magnetic relay (Fan) Magnetic relay (Drain pump) Transformer (220V-27V) Terminal strip (power) Terminal strip (control) Electronic expansion valve Optional parts F3-5U Fuse (250V, 16A) J1EH Electric heater K1R Magnetic relay (J1EH) Adapter for wiring RyC,RyF Magnetic relay RyH Magnetic relay (J1EH) F1U,F2U Fuse (250V,5A) X1A,X2A Connecter (wiring adapter) X1M Terminal strip Connector for optional parts X16A X18A Connector (wiring adapter) Connector (wiring adapter for electronical appendices) Field wiring L : Live N : Neutral : Connector : Wire clamp : Protective earth (screw) TES 1. Use copper conductors only. 2. When using a central remote control, see manual for connection to the unit. 3. When installing the electric heater, change the wiring for the heater circuit. The main power supply has to be supplied independently. 4. For high E.S.P. operation, change the wiring connection of x4a as shown on the wiring diagram. 5. When connecting the input wires from outside, forced off or on/off control operation can be selected by the remote control. See installation manual for morre details.

347 1N~50Hz 230V 80,100,125 CLASS (90,112,140 CLASS) Indoor Terminals for oparation indicator Compressor operation Fan operation Adapter for wiring SWITCH BOX COLORS: BLK : BLACK BLU : BLUE BRN : BROWN ORG : ORANGE PNK : PINK RED : RED WHT : WHITE YLW : YELLOW TE 5 Input from outside To central remote control TE 2 TE 3 Seperate power supply 1N~50Hz 230V Wired remote control L N Field wiring : Live : Neutral : Connector : Wire clamp : Protective earth (screw) TE 4 High E.S.P. operation 33H Float switch A1P Printed circuit board A2P Therminal board C1R Capacitor (M1F) F1U Fuse (250V, 5A) F2U Field fuse HAP Light emitting diode (service monitor-green) M1F Motor (fan) M1P Motor (drain pump) Q2E Earth leak detector R1T Thermistor (air) R2T, R3T Thermistor (refrigerant) RyF1-3 Magnetic relay (Fan) RyP Magnetic relay (Drain pump) T1R Transformer (220V-27V) X1M Terminal strip (power) X2M Terminal strip (control) Y1E Electronic expansion valve Optional parts F3-5U Fuse (250V, 16A) J1EH Electric heater K1R Magnetic relay (J1EH) Adapter for wiring RyC,RyF Magnetic relay RyH Magnetic relay (J1EH) F1U,F2U Fuse (250V,5A) X1A,X2A Connecter (wiring adaptor) X1M Terminal strip Connector for optional parts X16A Connector (wiring adapter) X18A Connector (wiring adapter for electronical appendices) TES 1. Use copper conductors only. 2. When using a central remote control, see manual for connection to the unit. 3. When installing the electric heater, change the wiring for the heater circuit. The main power supply has to be supplied independently. 4. For high E.S.P. operation, change the wiring connection of x4a as shown on the wiring diagram. 5. When connecting the input wires from outside, forced off or on/off control operation can be selected by the remote control. See installation manual for more details. 2TW D

348 INDOOR UNIT A1P Printed circuit board A2P Terminal board C1R Capacitor (M1F) F1U Fuse ( 5A, 250V) type F1U Fuse ( 10A, 250V) type HAP Light emitting diode (service monitor green) K1R-K3P Magnetic relay (M1F) KPR Magnetic relay (M1P) M1F Motor (Indoor fan) Q1M Thermo switch (M1F embedded) TES R1T Thermistor (Air) R2T-R3T Thermistor (Coil) S1L Float switch T1R Transformer ( V/22V) X1M Terminal block (Power) X2M Terminal block (Control) Y1E Electronic expansion valve OPTIONAL PARTS M1P Motor (Drain pump) WIRED REMOTE CONTROL SS1 Selector switch (Main/Sub) R1T Thermistor (Air) CONNECTOR FOR OPTIONAL PARTS X18A Connector (Wiring adaptor for electorical appendices) Note-5 1. : Terminal block : Connector : Terminal 2 : : Field wiring 3. In case using central remote control, connect it to the unit in accordance with the attached instruction manual. 4. When connecting the input wires from outside, forced off or on/off control operation can be selected by remote control. In details, refer to the installation manual attached the unit. 5 In case high E.S.P. operation, change the wiring connection of X2A as shown upper figure. 6. Symbols show as follows: PNK:PINK WHT:WHITE YLW:YELLOW ORG:ORANGE BLU:BLUE BLK:BLACK RED:RED BRN:BROWN 7 Use copper conductors only. Power supply Electric parts box Note 4 Input from outside Note 3 Transmission wiring central remote control Wired remote control (optional accessory) 3D039620B

349 INDOOR UNIT A1P Printed circuit board C1R C2R Capacitor (M1F 2F) F1U Fuse ( 5A, 250V) HAP Light emitting diode (service monitor-green) K1M Magnetic contactor (M1F 2F) K2M Magnetic contactor (M1F 2F) K3M Magnetic contactor (M1F 2F) K1R-K3P Magnetic relay (M1F 2F) KPR Magnetic relay (M1P) M1F M2F Motor (Indoor fan) Q1M Q2M Thermo switch (M1F 2F embedded) TES 1. : Terminal block : Connector : Short circuit connector :Terminal 2. : Field wiring R1T Thermistor (Air) R2T-R3T Thermistor (Coil) SS Selector switch (Static pressure) T1R Transformer ( V/22V) X1M Terminal block (Power) X2M-X3M Terminal block X2M Terminal block (Control) Y1E Electronic expansion valve OPTIONAL PARTS M1P Motor (Drain pump) WIRED REMOTE CONTROL R1T Thermistor (Air) SS1 Selector switch (Main/Sub) CONNECTOR FOR OPTIONAL PARTS X8A Connector (float switch) X18A Connector (Wiring adaptor for electorical appendices) 3. In case using central remote control, connect it to the unit in accordance with the attached instruction manual. 4. When connecting the input wires from outside, forced off or on/off control operation can be selected by remote control, in details, refer to the installation manual attached the unit. 5. In case installing the drain pump, remove the short circuit connector of X8A and execute the additional wiring for float switch and drain pump. 6. Symbols shows as follows: PNK:PINK WHT:WHITE YLW:YELLOW ORG:ORANGE BLU:BLUE BLK:BLACK RED:RED BRN:BROWN 7. Use copper conductors only. 8. In case high E.S.P. operation, change the switch(ss) for H. Power supply Note-5 Electric parts box Note-4 Input from outside Note-3 Transmission wiring central remote control Wired remote control (optional accessory) 3D039621B

350 INDOOR UNIT A1P Printed circuit board C1R Capacitor (M1F) F1U Fuse ( 5A, 250V) HAP Light emitting diode (service monitor-green) KAR Magnetic relay (M1S) KPR Magnetic relay (M1P) M1F Motor (Indoor fan) M1S Motor (Swing flap) Q1M Thermo switch (M1F embedded) R1T Thermistor (Air) R2T Thermistor (Coil liquid) R3T Thermistor (Coil gas) S1Q Limit witch (Swing flap) T1R Transformer ( V/22V) X1M Terminal block (Power) X2M Terminal block (Control) Y1E Electronic expansion valve PC Phase control circuit OPTIONAL PARTS M1P Motor (Drain pump) WIRED REMOTE CONTROL R1T Thermistor (Air) SS1 Selector switch (Main/Sub) RECEIVER/DISPLAY UNIT (ATTACHED TO INFRARED REMOTE CONTROL A2P Printed circuit board A3P Printed circuit board BS1 Push button (on/off) H1P Light emmitting diode (on-red) H2P Light emmitting diode H3P Light emmitting diode (filter sign-red) H4P Light emmitting diode (defrost-orange) SS1 Selector switch (Main/sub) SS2 Selector switch (Wireless address set) CONNECTOR FOR OPTIONAL PARTS X8A Connector (Float switch) X18A Connector (Wiring adapter for electrical appendices) X23A Connector (Infrared remote control) TES 1. : Terminal block : Connector : Short circuit connector 2. : Field wiring 3. In case using central remote control, connect it to the unit in accordance with the attached instruction manual. 4. X23A is connected when the infrared remote control kit is being used. 5. When connecting the input wires from outside, forced off or on/off control operation can be selected by remote control. In details, refer to the installation manual attached the unit. 6. In case installing the drain pump, remove the short circuit connector of X8A and execute the additional wiring for float switch and drain pump. 7. Symbols shows as follows: PNK:PINK WHT:WHITE YLW:YELLOW ORG:ORANGE BLU:BLUE BLK:BLACK RED:RED 8 Use copper conductors only. Power supply (timer-green) Electric part box Note-4 Receiver/display unit (Infrared remote control) Note-6 Note-5 Input from outside Note-3 Transmission wiring central remote control Wired remote control (optional accessory) 3D039801D

351 INDOOR UNIT A1P Printed circuit board F1U Fuse ( 3A, 250V) HAP Light emitting diode (service monitor-green) M1F Motor (Indoor fan) M1S Motor (Swing flap) R1T Thermistor (Air) R2T Thermistor (Coil liquid pipe) R3T Thermistor (Coil gas pipe) X1M Terminal block (Control) X2M Terminal block (Power) Y1E Electronic expansion valve Power circuit RECEIVER/DISPLAY UNIT (ATTACHED TO INFRARED REMOTE CONTROL) A2P Printed circuit board A3P Printed circuit board BS1 Push button (on/off) H1P Light emitting diode (on-red) H2P Light emitting diode (Timer-green) H3P Light emitting diode (Filter sign-red) H4P Light emitting diode (Defrost-orange) SS1 Selector switch (Main/Sub) SS1 Selector switch (Wireless address set) Power supply Side Front Note-8 Note-8 Receiver/display unit (Infrared remote control) Note-5: Input from outside Note-2: Transmission wiring central remote control TES Control box (Indoor unit) 1. : Terminal block : Connector : Field wiring : connector 2. In case using central remote control, connect it to the unit in accordance with the attached installation manual. 3. Symbols shows as follows: RED:RED WHT:WHITE GRN:GREEN PNK:PINK YLW:YELLOW ORG:ORANGE BLU:BLUE BLK:BLACK BRN:BROWN 4. :shows short circuit connector 5. :When connected the input wires from outside, forced WIRED REMOTE CONTROL R1R Thermistor (Air) SS1 Selector switch (Main/sub) CONNECTOR FOR OPTICAL PARTS X15A Connector (Float switch) X35A Connector (Group control adapter) Wired remote control off or on/off control operation can be selected by remote control. In details, refer to the installation manual attached the unit. 6. Remote control model varies according to the combination system, confirm engineering data and catalogs, etc. before connecting. 7. Confirm the method of setting the selector switch (SS1, SS2) of wired remote control and infrared remote control by installation manual and engineering data etc. 8. X24A is connected when the infrared remote control kit is being used. 3D034206D

352 A1P C1 F1U HAP K1R-K3R M1F Q1M R1T R2T R3T T1R X1M POWER SUPPLY V ~ 50Hz 220V ~ 60Hz X1M L A1P RED N BLU R1T R2T R3T t t t T1R t F1U X3A X1A L X4A N FC K1R FH X13A X12A X11A HAP K2R FL K3R FLL X7A X18A X30A T2 T1 F2 F1 P2 P1 PNK WHT YLW ORG BLU BLK T2 T1 F2 F1 P2 P1 X2M TE-4 INPUT FROM OUTSIDE TE-3 TRANSMISSION WIRING CENTRAL REMOTE CONTROL X18A T1R WHT WHT C1 YLW YLW WHT RED BLK ORG BRN R1T A1P WHT P1 P2 M RED BLK ORG BRN SS1 M Y1E X1M X2M ~ Q1M WIRED REMOTE CONTROL CONTROL BOX M1F (OPTIONAL ACCESSORY) INDOOR UNIT PRINTED CIRCUIT BOARD CAPACITOR (M1F) FUSE ( B, 5A, 250V) LIGHT EMITTING DIODE (SERVICE MONITOR-GREEN) MAGNETIC RELAY (M1F) MOTOR (INDOOR FAN) THERMO SWITCH (M1F EMBEDDED) THERMISTOR (AIR) THERMISTOR (COIL) TRANSFORMER ( V/22V) TERMINAL BLOCK (POWER) X2M Y1E R1T SS1 TERMINAL BLOCK (CONTROL) ELECTRONIC EXPANSION VALVE WIRED REMOTE CONTROL THERMISTOR (AIR) SELECTOR SWITCH (MAIN/SUB) CONNECTOR FOR OPTIONAL PARTS X18A CONNECTOR (WIRING ADAPTER FOR ELECTORICAL APPENDICES) TES) 1. : TERMINAL BLOCK,, : CONNECTOR, : TERMINAL 2. : FIELD WIRING 3. IN CASE USING CENTRAL REMOTE CONTROL, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTRUCTIO MANUAL. 4. WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE, FORCED OFF OR ON/OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROL. IN DETAILS, REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT. 5. SYMBOLS SHOW AS FOLLOWS. (PNK : PINK WHT : WHITE YLW : YELLOW ORG : ORANGE BLU : BLUE BLK : BLACK RED : RED BRN : BROWN) 6. USE COPPER CONDUCTORS ONLY. 3D039826D

353 A1P A2P C1 HAP HBP M1S M1F M1P Q1M R1T R2T RyA RyP S1Q S1L SS1 V1TR X1M X2M Indoor unit Printed circuit board Printed circuit board (Transformer 220~240V/16V) Capacitor (M1F) Light emitting diode (service monitor green) Light emitting diode (service monitor green) Motor (Swing flap) Motor (Indoor flap) Motor (Drain pump) Thermo switch(m1f embedded) Thermistor (Air) Thermistor (Coil) Magnetic relay (M1A) Magnetic relay (M1P) Limit switch (Swing flap) Float switch Selector switch (Emergency) Phase control circuit Terminal strip Terminal strip Signal receiver Signal transmission circuit R1T SS1 A3P A4P BS1 H1P H2P H3P H4P SS1 SS2 X24A X30A X35A Wired remote control Thermistor (Air) Selector switch (Main/sub) Receiver/Display unit (attached to wireless remote control) Printed circuit board Printed circuit board Push button (on/off) Light emitting diode (On-red) Light Emitting diode (Timer-green) Light Emitting diode (Filter sign-red) Light emitting diode (Defrost-Orange) Selector switch (Main/sub) Selector switch (Wireless address set) Connector for optional parts Connector (Wireless remote control) Connector (Inerface adapter for sky air series) Connector (Group control adapter) Note) 3 Bev unit Power supply V Notes) : Terminal : connector : Field wiring The bev unit shows an outline. please refer to a wiring diagram of bev unit pasting in detail. In case using central remote control, connect it to the unit in accordance with the attached installation manual. X24A is connected when the wireless remote control kit is being used. Remote control model varies according to the combination system, confirm engineering materials and catalogs, etc. Before connecting. Confirm the method of setting the selector switch (SS1, SS2) of wired remote control and infrared remote control by installation manual and engineering data, etc. Symbols shows as follows: RED: Red - BLK: Black - WHT: White - YLW: Yellow - GRN: Green - BLU: Blue Indoor unit Note) 5 Note) 5 Receiver/Display unit Wired remote control Control box 3D044973A

354 A1P A2P F1U HAP R3T SS1 X1M X2M Y1E Bev unit Printed circuit board assy Power supply printed circuit board assy ( V/16V) Fuse (,10A, 250V) Light emitting diode (Service monitor-green) Thermistor (Gas) Selector switch (M/S) Terminal strip (power) Terminal strip (Transmission) Electronic expansion valve Noise filter Z1C Z2C Z3C Z4F Power supply V 220V 50Hz 60Hz To indoor unit control box Note: : Terminal : Connector : Field wiring This wiring diagram only shows the bev unit.see the wiring diagrams and installation manuals for the wiringand settings for the indoor, outdoor and BS units. See the indoor unit s wiring diagram when installing optional parts for the indoor unit. Only one indoor unit may be connected to the bev unit See the indoor unit s wiring diagram for when connecting the remote control. Always use the sky air connection adapter for the unit when using a central control unit. refer to the manual attached the unit when connecting. Cool/heat changeover of indoor units connected to bev unit cannot be carried out unlessthey are connected to BS unit.in case of a system with bev unit only, cool/heat selector is required. Set the SS1 to M only for the bev unit connected to the indoor unit which is to havecool/heat switching capability, when connecting the BS unit.the M/S on the SS1 stands for Main/sub.this is set to S when shipped from the factory. Connected the attached thermistor to the R3T. Symbols shows as follows. (BLU: Blue - RED:Red - WHT: White - BLK: Black To outdoor unit 3D044901B

355 A1P DS1, DS2 F1U HAP PS X1M X1M (A1P) X2M Y1E PRINTED CIRCUIT BOARD DIP SWITCH FUSE (T, 3.15A, 250V) FLASHING LAMP (SERVICE MONITOR-GREEN) SWITCHING POWER SUPPLY (A1P) TERMINAL STRIP (POWER) TERMINAL STRIP (CONTROL) TERMINAL STRIP (C/H SELECTOR) ELECTRIC EXPANSION VALVE (SUB COOL) Y2E Y3E Y4E Y5E Z1C X2A ELECTRIC EXPANSION VALVE (SUB DISCHARGE) ELECTRIC EXPANSION VALVE (SUB SUCTION) ELECTRIC EXPANSION VALVE (MAIN DISCHARGE) ELECTRIC EXPANSION VALVE (MAIN SUCTION) ISE FILTER (FERRITE CORE) CONNECTOR FOR OPTIONAL PARTS CONNECTOR (WIRING EXTERNAL CONTROL ADAPTOR FOR OUTDOOR UNIT) A1P X2A TES) 1. THIS WIRING DIAGRAM APPLIES TO THE BS UNIT ONLY. 2. : TERMINAL STRIP, : CONNECTOR, : TERMINAL : FIELD WIRING, : PROTECTIVE EARTH 3. WHEN USING THE COOL /HEAT SELECTOR (OPTIONAL ACCESSORY), CONNECT IT TO TERMINALS A, B AND C ON X2M. 4. AS FOR WIRING TO THE IN/D UNIT (F1) (F2) AND OUT/D UNIT (F1) (F2) ON X1M (A1P), REFER TO INSTALLATION MANUAL. 5. SYMBOLS SHOW AS FOLLOWS. (BLU : BLUE RED : RED) 6. USE COPPER CONDUCTORS ONLY. 7. DIP SWITCH (DS1 2) INITIAL SETTINGS ARE AS FOLLOWS DS DS2 BSVQ100PV1 ON OFF Y1E M X7A M 6 Y4E ON ON X8A TE) OFF Y5E M 6 3 OFF DS1 DS2 DS1 DS2 TO IN/D X2M UNIT BSVQ160PV1 BSVQ250PV1 A B C F1 F2 F1 FOR USING DIP SWITCH (DS1 2), REFER TO INSTALLATION MANUAL OR "SERVICE PRECAUTION" LABEL ON EL. COMPO. BOX COVER. Y2E Y3E M M INDOOR UNIT X4A X5A X6A HAP DS1 X1M TO OUT/D UNIT F2 OUTDOOR UNIT TE) 7 DS2 PS F1U X1A Z1C N=2 Y5E Y3E Y2E Y4E Y1E BS UNIT TOP POWER SUPPLY ~ V 50Hz BLU N RED L X1M

356 + +

357 + + +

358 + +

359 + + +

360 φ Ω φ Ω φ φ φ φ φ φ φ φ Ω φ Ω φ Ω φ

361 φ μ φ Ω φ Ω φ Ω φ φ φ φ φ Ω φ Ω φ Ω φ

362 φ φ φ Ω φ Ω φ Ω φ

363 φ φ φ φ φ Ω φ Ω φ Ω φ φ μ φ φ φ φ φ μ φ Ω φ Ω φ Ω μ μ μ μ φ φ φ φ φ φ

364 φ φ μ μ φ Ω φ Ω φ Ω φ φ Ω φ Ω φ φ φ Ω φ Ω φ Ω φ

365 φ φ φ μ μ μ μ μ φ Ω φ Ω φ Ω φ φ φ μ μ μ μ μ φ Ω φ Ω φ Ω φ φ φ Ω φ Ω

366

367

368

369 Connection Kit A Connection Kit B 5m or less than 5m Maximum length from a connection kit. 10m or less from first branch. (Equivalent Piping Length 13m) Since there is a possibility that oil may be collected on a stop machine side, install piping between outdoor units to go to level or go up to an outdoor unit, and to make a slope. (V3036) The projection part between multi connection piping kits When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more, prepare a vertical projection part (200mm or more as shown below) only on the gas pipe line location less than 2m from multi connection kit. In the case of 2m or less Less than 2m (V3037) In the case of 2m or more Vertical Projection 200mm or more Less than 2m 2m or more Vertical Projection Vertical Projection Less than 2m Less than 2m (V3038)

370 Wrong Oil is collected to the outdoor unit at the time of a stop, because of bottom omission of piping. (V3039) Wrong Oil is collected to the low level outdoor unit at the time of a stop, because of downward slope of piping. The example of installation on which oil is not collected. Good Good Vertical Projection (V3040)

371 Example of connection (Connection of 8 indoor units) Branch with re Outdoor unit side (3 pipes) Suction gas pipe Indoor unit side (2 pipes) Gas pipe High pressure/low pressure gas pipe Liquid pipe BS unit Liquid pipe Single outdoor unit system (REYQ8~16) a b c A B f B1 i k F G g h j l B2 m 4 indoor unit refnet joint Maximum allowable length Allowable height difference Refrigerant branch kit selection Between outdoor and indoor units Between outdoor and indoor units Between indoor and indoor units Refrigerant branch kits can only be used with R410A. Actual pipe length Equivalent length Total extension length Actual pipe length Pipe length between outdoor [Example] unit 8: a+b+c+d+e Equivalent pipe length betwe the BSVQ100 and BSVQ160 Total piping length from outdo Difference in height between Difference in height between Pipe length from first refrigera [Example] unit 8: b+c+d+e+s How to select the refnet joint When using refnet joints at the first branch counted from t following table in accordance with the capacity of the outd Outdoor unit capacity type (Hp) Refrigerant branch kit nam 8+10 KHRQ23M29T 12~16 KHRQ23M64T For refnet joints other than the first branch, select the total capacity index of all indoor units connected afte Indoor capacity type 3 pipes <200 KHRQ23M20T 200 x< x< KHRQ23M29T9 KHRQ23M64T KHRQ23M75T Refrigera Example of downstream indoor units [Example] in case of refnet joint C: indoo

372 ith refnet joint Branch with refnet joint and refnet header Branch with refnet header c d e C D E l n p B2 B3 B4 H1 H1 a A b m B5 n B p H1 a m o q r s H2 8 c e g i B1 B2 B3 B4 d f h j k l o H2 b d f h j l B1 B2 B3 B4 B2 B3 c e g i k m n H2 o 8 r unit refnet header Outdoor unit side (3 pipes) t joint Indoor unit side (2 pipes) tdoor and indoor units 165 m +d+e+s 165 m [Example] unit 6: a+b+l 165 m, unit 8: a+m+n+p 165 m [Example] unit 8: a+o 165 m between outdoor and indoor units 190 m (Assume equivalent pipe length of the refnet joint to be 0.5 m, of the refnet header to be 1.0 m, of Q160 to be 4 m and of the BSVQ250 to be 6 m (for calculation purposes)) (See note 1 on next page) outdoor to all indoor units 1000 m tween outdoor and indoor units (H1) 50 m ( 40 m if outdoor unit is located in a lower position). ween adjacent indoor units (H2) 15 m frigerant branch kit (either refnet joint or refnet header) to indoor unit 40 m (See note 2 on next page) +e+s 40 m from the outdoor unit side, choose from the e outdoor unit (example: refnet joint A). name ct the proper branch kit model based on the d after the refrigerant branch. igerant branch kit name 2 pipes KHRQ22M20T KHRQ22M29T KHRQ22M64T KHRQ22M75T [Example] unit 6: b+l 40 m, unit 8: m+n+p 40 m How to select the refnet header Choose from the following table in accordance with the total capacity of all the indoor units connected below the refnet header. Note: 250 type indoor unit can not be connected lower than the refnet header. Indoor capacity type < x< x< Refrigerant branch kit name 3 pipes 2 pipes KHRQ23M29H KHRQ23M29H KHRQ23M64H KHRQ23M75H [Example] unit 8: o 40 m KHRQ22M29H KHRQ22M29H KHRQ22M64H KHRQ22M75H : indoor units [Example] in case of refnet joint B: indoor units 7+8, in case of refnet header: indoor units [Example] in case of refnet header: indoor units

373 Example of connection (Connection of 8 indoor units) Branch with r Use the outdoor unit multi connection piping kit that is sold separately as an option (BHFQ23P ) for the multi installation of outdoor units. Selection method is as shown in the right table. x y z H3 Outdoor unit side (3 pipes) Suction gas pipe HP/LP gas pipe Liquid pipe BS unit Indoor unit side (2 pipes) Gas pipe Liquid pipe Outdoor units installed n a multiple outdoor unit system (REYQ18~48) a A f B1 g i F h 1 b B G j 2 k 3 l B2 m 4 Install the joint part ( part in the figure) of the outdoor unit multi connection piping kit horizontally with attention to the installation restrictions described in "connecting the refrigerant piping". (*) In case of multi combination, interprete the word "outdoor" as "first outdoor branch". indoor unit refnet joint Actual pipe length Pipe length between outdoor [Example] unit 8: a+b+c+d+e Maximum allowable length Allowable height difference Allowable length after the branch Between outdoor and indoor units Between the first outdoor unit multi connection piping kit and outdoor unit (in case of a multiple outdoor unit system) Between outdoor and indoor units Between indoor and indoor units Between outdoor and outdoor units Outdoor unit multi connection piping kit and refrigerant branch kit selection Refrigerant branch kits can only be used with R410A. Equivalent length Total extension length Actual and equivalent pipe length Equivalent pipe length betwe of the BSVQ100 and BSVQ1 Total piping length from outdo The actual pipe length from t equivalent pipe length from t Difference in height between Difference in height between Difference in height between Pipe length from first refrigera Actual pipe length [Example] unit 8: b+c+d+e+s How to select the refnet joint When using refnet joints at the first branch counted fro the following table in accordance with the capacity of t A). Outdoor unit capacity type (Hp) ~22 24 Refrigerant branch kit nam KHRQ23M29T KHRQ23M64T KHRQ23M75T For refnet joints other than the first branch, select the total capacity index of all indoor units connected after Indoor capacity type < x< x< pipes KHRQ23M20T KHRQ23M29T9 KHRQ23M64T KHRQ23M75T Refrigeran Example of downstream indoor units [Example] in case of refnet joint C: indo

374 ith refnet joint Branch with refnet joint and refnet header Branch with refnet header x y z H3 x y z H3 c d e C D E l n p B2 B3 B4 m o q r s H2 8 H1 H1 a m A b B5 n B c e g i B1 B2 B3 B4 d f h j k l o p 8 H2 H1 a b d f h j l B1 B2 B3 B4 B2 B3 c e g i k m n H2 o 8 nit refnet header Outdoor unit side (3 pipes) oint outdoor multi connection piping kit Indoor unit side (2 pipes) oor(*) and indoor units 165 m d+e+s 165 m [Example] unit 6: a+b+l 165 m, unit 8: a+m+n+p 165 m 2 pipes How to select the refnet header Choose from the following table in accordance with the total capacity of all the indoor units connected below the refnet header. Note: 250 type indoor unit can not be connected lower than the refnet header. Indoor capacity type 3 pipes Refrigerant branch kit name 2 pipes < x< x< Number of outdoor units 2 3 Branch kit name [Example] unit 8: a+o 165 m tween outdoor(*) and indoor units 190 m (Assume equivalent pipe length of the refnet joint to be 0.5 m, of the refnet header to be 1.0 m, Q160 to be 4 m and of the BSVQ250 to be 6 m (for calculation purposes)) (See note 1 on next page) utdoor(*) to all indoor units 1000 m om the first outdoor unit multi connection piping kit to the outdoor unit 10m. (x 10m, y 10m, z 10m)The m the first outdoor unit multi connection piping kit to the outdoor unit 13m. (x 13m, y 13m, z 13 m ) een outdoor and indoor units (H1) 50 m ( 40 m if outdoor unit is located in a lower position). een adjacent indoor units (H2) 15 m een adjacent outdoor units (H3) 5m igerant branch kit (either refnet joint or refnet header) to indoor unit 40 m (See note 2 on next page) e+s 40 m d from the outdoor unit side, choose from of the outdoor unit (example: refnet joint ame t the proper branch kit model based on the after the refrigerant branch. erant branch kit name KHRQ22M20T KHRQ22M29T KHRQ22M64T KHRQ22M75T [Example] unit 6: b+l 40 m, unit 8: m+n+p 40 m KHRQ23M29H KHRQ23M29H KHRQ23M64H KHRQ23M75H [Example] unit 8: o 40 m KHRQ22M29H KHRQ22M29H KHRQ22M64H KHRQ22M75H How to choose an outdoor multi connection piping kit (this is required when the system is a multiple outdoor unit system) Choose from the following table in accordance with the number of outdoor units BHFQ23P907 BHFQ23P1357 indoor units [Example] in case of refnet joint B: indoor units 7+8, in case of refnet header: indoor units [Example] in case of refnet header: indoor units

375 Pipe size selection For an outdoor unit multi installation (REYQ18~48P), selectthepipe size in accordance with the following figure. E F F A C B C D C D A. Piping between outdoor unit and refrigerant branch kit B. Piping between outdoor unit multi connection piping units Choose from the following table in accordance with the outdoor unit total ca downstream. Outdoor unit capacity type (Hp) Suction gas pipe Piping outer diameter size HP/LP gas pipe ~ ~ C. Piping between outdoor unit multi connection piping kit and outdo Choose from the following table in accordance with the capacity type of the Outdoor unit capacity type (HP) Piping outer diameter size Suction gas pipe HP/LP gas pipe How to calculate the additional refrigerant to be charged Additional refrigerant to be charged R (kg) R should be rounded off in units of 0.1 kg The refrigerant charge of the system must be less than 100kg. This means that in case the calculated refrigerant charge is equal to or more than 95kg you must divide your multiple outdoor system into smaller independent systems, each containing less than 95kg refrigerant charge. For factory charge, refer to the unit name plate. R = [(X1 φ22.2) 0.37] + [(X2 φ19.1) 0.26] + [(X3 φ15.9) 0.18] + [(X4 φ12.7) 0.12] + [(X5 φ9.5) 0.059] + [(X6 φ6.4) 0.022] A X1...6 = Total length (m) of liquid piping size at φ a A = Weight according to table A B = Weight according to table B in function of indoor unit connection ratio Note: When the equivalent pipe length between outdoor and indoor units is 90m or more, the size of the main liquid pipe must be increased. Never increase suction gas pipe and HP/LP gas pipe sizes. Depending on the length of the piping, the capacity may drop, but even in such a case it is possible to increase the size of the main liquid pipe. Note: Allowable length after the first refrigerant branch kit to indoor units is 40m or less, however it can be exte Required conditions It is necessary to increase the pipe size of the liquid and suction gas pipe if the pipe length between the first and the final branch kit is over 40m (reducers must be procured on site). Increasing the HP/LP gas pipe size is not allowed. If the increased liquid pipe size is larger than the pipe size of the main liquid pipe, then the pipe size o the main liquid pipe needs to be increased as well. If the increased suction gas pipe size is larger than the pipe size of the main suction gas pipe, then th allowable length after the first refrigerant branch kit may not be increased to 90m. Size-up of the main suction gas pipe may affect a good oil return to the outdoor unit due to influence o the HP/LP gas pipe. For calculation of total extension length, the actual length of above pipes must be doubled (except length of main pipes and of pipes which do not have an increased pipe size). Indoor unit to the nearest branch kit 40 The difference between the distance of the outdoor unit to the farthest indoor unit and the distance of the outdoor unit to the nearest indoor unit 40m

376 E. Piping between refrigerant branch kit and BS unit Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit. l capacity type, connected Choose from the following table in accordance with the indoor unit total capacity type, connected downstream. size (mm) Indoor unit Piping outer diameter size (mm) e Liquid pipe capacity type Suction gas pipe HP/LP gas pipe Liquid pipe 9.5 < x< x< x< x< x< F. Piping between refrigerant branch kit or BS unit and indoor unit Choose from the following table in accordance with the capacity type of the connected indoor unit. Indoor unit Piping outer diameter size (mm) tdoor unit capacity type Suction gas pipe Liquid pipe f the connected outdoor unit. 20, 25, 32, 40, size (mm) 63, 80, 100, e Liquid pipe D. Equalizer piping (outdoor units only) Piping outer diameter size (mm) 19.1 A + B tio REYQ Hp Hp 26 Hp Hp 32~40 Hp 42 Hp Hp 48 Hp A 1.0 kg 1.5 kg 2.0 kg 2.5 kg 3.0 kg 3.5 kg 4.0 kg 4.5 kg REYQ 18~32 Hp 34~48 Hp >100% 130% >100% 120% >120% 130% B 0.5 kg 0.5 kg 1.0 kg Example for refrigerant branch using refnet joint and refnet header for REYQ34. REYQ34 = REMQ8+REMQ10+REMQ16, the indoor unit connection ratio = 120% and the piping lengths are as below. a : φ m b : φ m f : φ m g : φ m k : φ m l : φ m p :φ m r : m c : φ m h : φ m m:φ m s : φ9.5 3 m d : φ m i : φ m n :φ m t : φ9.5 3 m e : φ m j : φ m o :φ m u : φ15.9 1m R = [ [ ]+[1 0.18]+[3 0.12]+[ ]+[ ] ] = R = 27.1 kg ain to REYQ φ REYQ φ ~ ~ ~ Outdoor unit 2 Main pipes 3 Increase only liquid pipe size 4 First refrigerant branch kit 5 BS unit 6 Indoor unit extended up to 90m if all the following conditions are fulfilled. the as ize of en the nce of Examples drawings indoor unit 8: b+c+d+e+f+g+p 90 m increase the pipe size of b, c, d, e, f, g Increase the pipe size as follows φ9.5 φ12.7 φ12.7 φ15.9 φ15.9 φ19.1 φ19.1 φ22.2 th of a+b*2+c*2+d*2+e*2+f*2+g*2 +h+i+j+k+l+m+n+p 1000 m h, i, j... p 40m f the The most remote indoor unit 8 The nearest indoor unit 1 (a+b+c+d+e+f+g+p) (a+h) 40m a b c d e f g H1 A B C D E F G h i j k l m n p H2 8 1 Outdoor unit 2 Refnet joints (a~g) 3 Indoor units (1~8

377

378 Ω

379 Ω

380 Detected Pressure PH = 1.38V-0.69 PL = 0.57V-0.28 PH : High pressure (MPa) PL : Low pressure (MPa) V : Voltage (V) PH : Detected Pressure [High Side] MPa PL : Detected Pressure [Low Side] MPa VH : Output Voltage [High Side] VDC VL : Output Voltage [Low Side] VDC High Pressure (PH) Low Pressure (PL) Output Voltage (VH, VL) (V3053)

381 7 7 7 J1 J2 J3 P1 P3 N3 U V W DM P1 P2 P3 IGBT X10A L1 L2 L3 K2 J1 J2 J3 N3 U V W X11A (V2895)

382 Ω Ω Ω Ω Ω Ω Ω Ω

383

384

385 Pressure-Enthalpy curves of HFC-32/125 (50/50wt%)

386 Temperature ( C) Steam pressure (kpa) Liquid Vapor Density (kg/m 3 ) Liquid Vapor Specific heat at constant pressure (kj/kgk) Liquid Vapor Specific enthalpy (kj/kg) Liquid Vapor Specific entropy (kj/kgk) Liquid Vapor

387 2 2 Cylinder Siphon tube Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.

388 2φ Pipe size φ6.4 φ9.5 φ12.7 φ15.9 φ19.1 φ22.2 φ25.4 φ28.6 φ31.8 φ38.1 φ44.5 Material O O O O O 1/2H 1/2H 1/2H 1/2H 1/2H 1/2H Ve-up R-407C Thickness t (mm) Material O O O O 1/2H 1/2H 1/2H 1/2H 1/2H 1/2H 1/2H Ve-upII R-410A Thickness t (mm)

389 Flare gauge 2 Nominal size 1/4 3/8 1/2 5/8 3/4 Tube O.D. Do Class-2 (R-410A) A Unit:mm Class-1 (Conventional) Dimension A For class-1: R-407C For class-2: R-410A

390 2 2 For class-1: R-407C For class-2: R-410A Dimension B Vacuum pump adapter Reverse flow preventive vacuum adapter

391