SERVICE Manual AIR CONDITIONER OUTDOOR UNIT UD26A1C2 UD18A1C2 INDOOR UNIT AD26A1C13 AD18A1C Installation. 2. Disassembly and Reassembly

Transcription

1 ROOM AIR CODITIOER IDOOR UIT AD6AC3 AD8AC09 OUTDOOR UIT UD6AC UD8AC SERVICE Manual AIR CODITIOER. Installation COTETS. Disassembly and Reassembly 3. Troubleshooting 4. Exploded Views and Parts List 5. Refrigerating Cycle Block Diagrams 6. Wiring Diagrams 7. Schematic Diagrams E DB A(5)

2 . Installation - Refrigerant Refill Procedure If connecting pipe of more than 0 metres is installed, additional refrigerant should be charged by extra metre. ou donõt have to charge additional refrigerant up to 0 metres of connecting pipe.. Remove the valve stem cap and service port of 3-way valve.. Connect the charging hose of low pressure side of Manifold gauge to the packed valve having a charging port(/ó Packed valve) as shown at the right figure. Piping length and the height AD6AC3 AD8AC09 Pipe Size LIQUID GAS Max.piping length A Max height B A-UIT /4Ó /Ó 5m(49ft 3in) 3m(9ft 0in) B-UIT /4Ó /Ó 5m(49ft 3in) 3m(9ft 0in) A-UIT /4Ó 3/8Ó 5m(49ft 3in) 3m(9ft 0in) B-UIT /4Ó 3/8Ó 5m(49ft 3in) 3m(9ft 0in) 3. Operate the unit at the cooling mode. 4. Slowly open the valve of the low pressure side of Manifold gauge counterclockwise until the low pressure of manifold gauge indicates 4.8 to 5.5 kg/cm (68 a 78psi) at the high cool operation (-unit operation) and the standard temperature. Additional refrigerant charge (R,g) When length of the pipe is over 5u by the unit, you should charge the refrigerant Formulas A-UIT : 0gx(L a -0)/m B-UIT : 0gx(L b -0)/m (La:the length of A-unitÕs pipe L b :the length of B-unitÕs pipe) IDOOR UIT B A OUTDOOR UIT It is recommend that refrigerant should be slowly put in. If the refrigerant is put in too quickly, compressor will be damaged. 5. Stop operation of the air conditioner. 6. Disconnect the charge hose of manifold gauge. IDOOR A-UIT 7. Close the cap of each valve. IDOOR B-UIT

3 - ÒPump downó Procedure. Confirm that both the -way and 3-way valves are set to the open position. () Remove the valve stem caps. () Be sure to use a hexagonal wrench to operate the Gas side valve stems.. Operate the unit for 0 to 5 minutes. -Way Valve 3. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve. () Connect the charge hose with the push pin to the service port. Cap 4. Air purging of the charge hose. () Open the low-pressure valve on the charge set slightly to air purge from the charge hose. 3-Way Valve 5. Set the liquid side -way valve to the closed position. 6. Operate the air conditioner at the cooling cycle and stop operation immediately after setting the 3-way valve to the closed position when the gauge indicates 0 kg/cm G. If the unit can not be operated at the Cooling Mode(weather is rather cool), operate the unit at the Trubo Mode. So that the unit can be operated. 7. Disconnect the charge set, and mount the both 3-way valveõs stem nuts and the service port cap. Relocation of the air conditioner Refer to this procedure when the unit is relocated.. Carry out the pump down procedure (refer to the details of Ôpump downõ).. Remove the power cord. 3. Disconnect the assembly cable from the indoor and outdoor units. 4. Remove the flare nut connecting the indoor unit and the pipe. At this time, cover the pipe of the indoor unit and the other pipe using a cap or vinyl plug to avoid foreign material entering. 5. Disconnect the pipe connected to the outdoor unit. At this time, cover the valve of the outdoor unit and the other pipe using a cap or vinyl plug to avoid foreign material entering. 6. Make sure you do not bend the connection pipes in the middle and store together with the cables. 7. Move the indoor and outdoor units to a new location. 8. Remove the mounting plate for the indoor unit and move it to a new location.

4 . Disassembly and Reassembly Stop operation of the airconditioner and remove the power plug from the wall outlet before repairing the unit - Indoor Unit o Parts Procedure Remark Front Grille ) Stop the air conditioner operation and block the main power. ) Seperate the tape of front. Panel upper. 3) Contract the second finger to the left and right handle and pull to open the inlet grille. 4) Take the left and right filter out. 5) Loosen one of the right fixing screw and seperate the terminal cover. 6) Open the cover screw and loosen three fixing screws of front grille. 7) Pull the upper left and right of discharge softly for the outside cover to be pulled out. 8) Pull softly the lower part of discharge and push it up Caution: Assemble the front panel and fix the hooks of left and right. 3

5 o Parts Procedure Remark Filter Frame ) Loosen the left and right screw of the Holder Filter, and Separate the Holder Filter. 3 Ass'y Tray Drain ) Do, above. Separate the holder at the rear side of Indoor unit. ) Take the display PCB out. (Center of indoor unit). 3) Loosen three fixing screws of left and right. 4) Pull tray drain out from the back body. 4 Main PCB ) Do " ", above ) Take all the connector of PCB upper side out. (Inclusion Power cord) 3) Separate the outdoor unit connection wire from the terminal block. 4) If pulling the Main PCB up, it will be taken out. (Separate the TRAS hook, it before). 4

6 o Parts Procedure Remark 5 Heat Exchanger ) Do " 3 4 ", above. ) Loosen the left screws of the heat exchanger. Lifting the heat exchanger up a little to push the up side for separation from the indoor unit 6 Fan Motor and Cross Fan ) Do " ", above. ) Loosen the fixing two screws and separate the motor holder. 3) Loosen the fixing screw of motor fan. (By use of M3 wrench) Separate the motor from the fan. Separate the fan motor the left holder bearing. 5

7 - Outdoor Unit o Parts Procedure Remark Cabinet ) Turn off the unit and remove the power cable ) Remove the top cover. 3) Remove the control box cover. 4) Unplug the ass'y cable. 5) Remove the cabi-side. 6) Remove the cabi-front. <UD6AC> * When you assemble the parts, check if the each parts and electric connectors are fixed firmly. <UD8AC> Fan Motor & Propeller Fan ) Do Procedure above. ) Remove the nut flange. (Turn to the right to remove as it is a left turned screw) 3) Disassemble the propeller fan. <UD6AC> <UD8AC> 6

8 3. Troubleshooting 3- Items to be checked first ) Is the voltage of the power correct? The input voltage shall be the rating Voltage ±0% range. The airconditioner may not operate properly if the voltage is out of this range. ) Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 4 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. Otherwise the airconditioner may not operate properly. 3) When a problem occurs due to the contents illustrated in the table below it is a symptom not related to the malfunction of the airconditioner. O Operation of air conditioner Explanation The COOL operation indication LED (Green) blinks for 3minutes when a power plug of the outdoor unit is plugged in for the first time. In a COOL operation mode, the compressor does not operate at a room temperature lower than the setting temperature. In a HEAT operation mode, the compressor does not operate at a room temperature higher than the setting temperature. 3 Fan speed setting is not allowed in AUTO or DR mode. 4 Compressor stops operation intermittently in DR mode. 5 Compressor of the outdoor unit is operating although the indoor unit is turned off in a HEAT mode. 6 Timer LED only of the indoor unit lights up and the air conditioner does not operate. 7 The compressor and indoor fan stop intermittently in HEAT mode. 8 Indoor fan and outdoor fan stop operation intermittently in a HEAT mode. 9 The compressor stops intermittently in a COOL mode or DR mode, and fan speed of the indoor unit decreases. It indicates power is on. The LED stops blinking if the operation O/OFF button on the remote control unit is pushed. The speed of the indoor fan is set to LL in DR mode. Fan speed is 5 steps is selected automatically in AUTO mode. Compressor operation is controlled automatically in DR mode depending on the room temperature and humidity. When the unit is turned off while de-ice is activated, the compressor continues operation for up to minutes (maximum) until the deice is completed. Timer is being activated and the unit is in ready mode. The unit operates normally if the timer operation is cancelled. The compressor and indoor fan stop intermittently if room temperature exceeds a setting temperature in order to protect the compressor from being overheated in a HEAT mode. The compressor operates in a reverse cycle to remove exterior ice in a HEAT mode, and indoor fan and outdoor fan do not operate intermittently for within 0% of the total heater operation The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent indoor heat exchanger from being frozen. 4) Indoor unit observes operation condition of the air conditioner, and displays self diagnosis details on the display panel. : Lamp blinking X : Lamp OFF O Display Operating Timer Fan Turbo Self Diagnosis (GREE) X X X Restore from power failure (input initial power) X X X Indoor unit Room sensor Error (open or short) 3 (GREE) X X Indoor unit heat exchanger temperature sensor Error (open or short) 4 X X X Indoor fan malfunctioning (for speed is below 450rpm) 5 X X In case that the communication between the indoor unit and outdoor unit is not made for 60 seconds Outdoor sensor Error (open or short) 6 (GREE) X X - Outdoor sensor - Pipe sensor A, B 7 (GREE) X The malfunction ot 4way valve in heat mode operation. 7

9 3- Fault Diagnosis by Symptom 3-- When the power voltage is not available ) Inspection items () Is the power voltage is normal? (the rating voltage ±0% range) () Is the power cord is correctly connected and is the contact good? (3) Does the sound ÒtingÓ come out with the operation lamp (green) flickering when the power is applied? If it is not flickering, do inspect and repair in accordance with the following inspection sequence. ) Inspection sequence Apply the power o trouble (normal) Is the operation lamp of indoor unit on when the operation /stop button of remote controller is pressed? Is the operation lamp flickering with the sound of ÒtingÓ? Check of remote controller Is the communication signal of remote controller surely sent and received? Is the outdoor power connected normally? Check of the installation method and electrical circuit ormal Is there no problem between the connector of AssÕy display PCB and the receiving module? Is the fuse (F70, 50V, 3.5A) of PCB open? Replace the fuse (50V, 3.5 A). Replace of Ass'y display PCB Is the voltage at Socondery side of transformer of PCB (T7)? (AC5V~AC5V) Transformer is out of order - replace Is the output voltage of voltage regulator IC (KA 78) DC 0V and V? Repair and replace the power source rectifying diode (D0- D05) and KA78. Is the output voltage of electrostatic voltage regulator IC (KA 7805) DC 4.5 V V? KA7805 is out of order - replace Replace the main PCB of indoor unit 8

10 3-- o Power (Outdoor unit) ) Inspection items () Is the power source normal (the rating voltage ±0% range)? () Is the outdoor power connected normally? (() of terminal : L, () of terminal :, (3) of terminal : communication)? (3) Check whether the display of outdoor PCB(SEG) is shown in the order of A- B - C when the power is applied. If the display (SEG ) is not shown the inspection and repair shall be performed in the sequence of the following: ) Inspection sequence Put the power off and put it on after 5 seconds. ormal of outdoor PCB Check the communication of PCB and whether the LED is continuously flickering. Is the display of PCB shown in the sequence of A-B-C? Are the power cord (() L, () ) and communication line (3) of outdoor terminal block connected correctly? Reinstall the power cord and communication line with the reference of installation manual. Replace the transformer Is the terminal of PCB terminal (R7, 7, 73) are assembled in the correct position? After watching the display of PCB board, assemble the color and shape of housing correctly as follows: Assemble the transformer in the normal way. Replace the fuse (F70) 50V 3.5A. Measurement of resistance of power transformer Are they as follows? st side 90 ~ 0½ nd side 0.9 ~.½ Is the fuse open? (F70) Insert the primary side of power transformer in the terminal GT0 and then is the voltage of secondary side normal? (AC 5V- AC 5V) Is the fuse (F0, 50V A) blown out? Check whether the output voltage of IC0 (KA 78) is DC V. BLK WHT RED BLK WHT RED Replace the fuse F0 (50V A). Check and Replace the rectifying diode of power side (D0 - D04) and KA 78. Check whether the output voltage of IC0 (KA 7805) is DC 5V. Replace the IC 0 (KA7805) Replace the outdoor unit Ass'y main PCB. 9

11 3--3 When the fan of indoor unit does not operate ) Inspection items () Is the power voltage normal? () Is the connector of indoor fan with the good contact? (C73) (3) Is the soldering status of running condenser (CR7) with the good contact? (4) Is connector of the Hall IC with the good contact (C 43)? (5) Is the indoor fan rotating when it is under operation mode? (6) Is the FA LED (green) flickering when the indoor fan stalled (for more than 5 seconds) and the trouble condition of speed detecting part? Put the power off and put it on after 5 seconds. Is the operation lamp flickering for 3 minutes and then put off? If the power is not available (indoor unit), item no Error occurs after the indoor unit fan motor is rotating for 5 seconds? (FA Lamp flickering) If the operation /stop button of the remote controller is pressed, is the operation lamp flickering and then is the indoor fan rotating after 5~6 seconds? Replace of indoor unit PCB Ass'y. Replacement of indoor unit fan motor. Is AC 0V and higher shown across the indoor fan connector (C73)? Is the type of MICOM (IC 04) Pin no. 63 old type? 0Hz Is the pin no. of IC 06 (KID 65003) the old type? 0Hz Replace the IC 06 (KID 65003) and SS7(G3MB0pl). Is the pin no 5 of MICOM the old type? Replace Q40 (Ksc 945). Replace the indoor unit PCB Ass'y due to the Micom defect. 0

12 3--4 When the outdoor unit fan does not operate ) Inspection items () The outdoor unit fan motor operates only when the operating conditions are satisfied and is selected by the R74(LOW) and P75(HI) to rotate. () Is the power voltage normal? (3) Is the contact of outdoor unit fan motor (C 73) good? (4) Is the winding resistance of outdoor unit fan motor 58½ at Hi side and 43½ at low side? (5) The outdoor unit fan motor operates with Hi at over 8 C and low at below 6 C during the cooling operation, and operates with Hi at below 4 C and low at over 5 C during the heating operation. ) Inspection sequence Apply the power to the outdoor unit and operate the indoor unit. Is the indoor unit under operating conditions? Is it operating in the High speed? Is the voltage shown across the connector ()«(3) (()«(5))(AC 98V- AC 64V)? Is no. ( ) of IC 06 at low? (DC 0.7 V) Is pin no. 48(49) of IC 04 (MICOM) at High (DC 5 V)? Is the outdoor unit fan motor under the operating conditions? ormal ormal (operation off) ormal Check the winding resistance of outdoor unit fan motor winding resistance Replace Contact bad of R 74(Low), R 75(High) Replace Defect of IC06 output Replace Defect of IC 04(MICOM) - replace the IC 04 or PCB assõy * Operating specification of the FA of outdoor unit () When the COMP is under the COMP O condition during the cooling and heating operation, Hi or LOW operation is selected according to the temperature condition of outdoor room. () When A room and B room are mixed to operate, it is always under low operation. (3) Perform the comp O/OFF control in the dry mode. (4) When it is under the operation of anti-freezing, overload protection, defrost operation, it may be Low, high or Off. (5) Hi = High speed, Low = Low speed

13 3--5 When the UP/DOW Louver Moter Does ot Operate.(Initial Diagnosis) ) Checklist : () Is input voltage normal? () Is the UP/DOW louver motor properly connected with the connector (C6)? ) Troubleshooting procedure Remove power cord and plug in again in approx. 5 seconds. Is operating lamp blinking? Does operation start when swing button of the remote control unit pushed? Check as in the procedure "o Power parts". Refer to page. ormal Voltage at pin #33-#36 of micom (ICO4) change?(squarewave) Micom (IC04) is faulty. Volatge at pin #3, #4, #5, #6 of IC05 (KID65003) change?(squarewave) Driver IC05 (KID65003) is faulty. UP/DOW louver motor is faulty.

14 3--6 If Operation by Remote Controller Unit is Impossible.(Initial Diagnosis) ) Troubleshooting procedure Remove power cord and plug in again approx. 5 Seconds Is operation lamp blinking? Check as in the procedure ÒO Power partsó. Refer to page. Ò Ò sound heard from the indoor unit when O/OFF button on the remote control unit pushed? ormal Voltage of battery less than.5v (Remote Control Unit)? LCD display status of REMOCO normal? Replace battery. LCD is faulty. Transmission display lamp ( ) blinking when O/OFF button on the remote control unit pushed? Replace button. Voltage at PI #30 of Remocon Micom change? Voltage at collecter of Q60 or Q60 change? Micom is faulty. Q60(C4375) or Q60(C63) is faulty. IR LED(CL-L5EU) is faulty. Voltage at pin #6 of micom (IC04) change (IDOOR UIT)? Micom (IC04) is faulty. Receiver module is faulty.

15 3--7 When the 4 way valve (A,B) is not operating ) Inspection items () Are the 4 way valve A and B under the operating conditions? (When the COMP A (4 way valve A ) and COMP B (4 way valve B) are on during the heating operating) () Is the power voltage normal? (3) Is the connecting of 4 way valve A (C 75) and B (C 76) good? ) Inspection sequence Put off the outdoor unit power and put it on again after 5 seconds. Select the heating operation of A(B) room by the remote controller. Has 3 minutes passed after selection of A(B) room heating? Is the 4 way valve A(B) on? Is the voltage shown across the 4 way valve A(B) connector (C 75, C 76)? Is the pin no 47(46) of IC 04 ( MICOM) at high (DC 5V)? Is the 4 way valve A (B) under operating conditions? ormal Keep 4 way valve off. ormal Defect of R 76 (R 77) contact and coil Replace the Relay Defect of IC 06 (IC 07 ) output Replace Defect of IC 04(MICOM) - replace the IC 04 or PCB assõy *4 way valve operating conditions () During the defrost control, put the 4 way valve A(B) off. () During the heating operation put the 4 way valve A(B) on. (3) The changeover of heating to cooling : put the 4 way valve off immediately (in case of B and C room). (4) The changeover of cooling to heating : it is on after 70 seconds delay. 4

16 3--8 When the compressor does not operate ) Inspection items () Is the COMP A under the operating conditions? (cooling operating of A, B(C) room) () Is the power voltage normal? (3) Are the connector connection of COMP A(R 7, 73) and B(R 7) good? (4) The COMP A(B) is operated on and off in accordance with the operating conditions of indoor unit of A (B. C) room. ) Inspection sequence Apply the outdoor power and operate the indoor unit A(B.,C) in the cooling mode. Is the comp A under the operating condition? Has 3 minutes passed COMP A(B) after the power initial and COMP on/off ormal (comp A (B ) off) Keep Comp A (B ) off Is comp A (B) on? *Refer to the power measuring terminal Is the voltage (AC 98- AC64V) shown across the terminal of Comp A(B) power applied? ormal Defect of comp A (B) and running condenser Replace Is the voltage of pin no. 4, 3( 5) at low (DC 0.7V)? Is the voltage of pin no. 50, 5 (5) of IC 04 (micom) at high (DC 5V)? Is comp A (B ) under the operating condition? ormal (comp A (B ) off) Defect of Ry 7, 73 (Comp B) and Ry 7(comp A) contact and coil Replace Defect of IC 06 output Replace Defect of Ic 04 (micom) Replace * Comp A (B ) operating conditions () Comp A : Comp on /off control in accordance with the A room during the heating and cooling indoor unit operation () Comp B : Comp on /off control in accordance with the B(C) room during the heating and cooling indoor unit operation * Comp A(B ) power measuring terminal () Comp A measuring ; R 73 (4) «R 7 (4) () Comp B measuring ; R 7 (4) «R 7 (4) (3) Power input ; R 7 (3) «R 73(3) BLK WHT RED R7 (3) (4) R7 (3) (4) R73 (3) (4) BLK WHT RED 5

17 4. Exploded Views and Parts List 4- Indoor Unit

18 Parts List QÕT o. CODE O Description Specification Remark AD8AC09 AD6AC3 DB64-040A GRILLE AIR ILET ABS - DB A PAEL CETER DISPLA PC DB63-303A GUARD AIR FILTER PP 3 DB63-047B COVER TERMIAL HIPS 4 DB E ASS«FROT PAEL ASS«5 DB B ASS«PCB DISPLA ASS«6 DB B ASS«TRA DRAI ASS«6- DB95-038A ASS«STEP MOTOR U/D DCV.600GR 6- DB A BLADE-H HIPS 7 DB B ASS«EVAP ASS«- DB A ASS«EVAP ASS«- 8 DB C SPACER EVAP PVC 9 DB6-000A HOLDER MOTOR ASS«ASS«9- DB A ASS«TERMIAL BLOCK ASS«0 DB3-0078H MOTOR FA I AMPFS040WTVB DB94-304A ASS«-C-F-FA 95 X 69.4mm DB A ASS«BEARIG ASS«3 DB A ASS«MAI PCB ASS«- DB93-067A ASS«MAI PCB ASS«- 4 DB3-0008D THERMISTOR ASS«ASS«5 DB6-05A CASE-COTROL ABS(94-5V) 6 DB A BOD-BUSH HIPS 7 DB B ASS«BACK BOD ASS«8 DB6-409A HOLDER PIPE HIPS 9 DB70-068A PLATE HAGER SGCC-M 7

19 4- Outdoor Unit 4-- UD6AC 0(0-~0-3) (9-~9-3) 7(7-,6-) 5(5-) (-~-7) 5(5-~5-5) (-5) 6(6-,7-) 9 8 3(3-~3-5) 8(8-3) 6(6-~6-) (-) 8

20 Parts List o. CODE O Description Specification QÕT Remark DB90-063D DB7-5050A DB A DB3-0083A DB6-0093A DB B DB A DB90-400A DB A DB A DB90-007A DB99-060A DB6-400A DB A DB6-3050A DB99-063A DB A DB6-3965A DB6-3966A DB99-064A DB A DB6-3965A DB6-3966A DB C DB A DB6-099A DB6-000A DB A DB95-00A DB93-06A DB A DB A DB A DB63-03C DB D DB A DB A DB A DB63-065B DB47-000G DB99-06A DB A DB99-06A DB A DB A DB63-300J ASS'-WELD FROT ISUL FROT OUT FA-PROPELLER MOTOR-FA OUT BASE-MOTOR CABIET-SIDE ISUL SIDE CABI ASS'-COVER VALVE COVER-COTROL COVER-VALVE ASS'-BASE OUT ASS'-VALVE VALVE-PACKED /" VALVE-PACKED /4" BRACKET-VALVE ASS' CHECK V/V, A VALVE CHECK TUBE CAPI (C) TUBE CAPI (H) ASS' CHECK V/V, B VALVE CHECK TUBE CAPI (C) TUBE CAPI (H) GUARD-COD ASS' COTROL OUT CASE COTROL OUT CASE PCB OUT C-OIL TERMIAL BLOCK ASSÕ HEATER C-OIL ASS'-PCB MAI OUT ASS'-PARTITIO ISUL PARTITIO PARTITIO COVER-TOP ASS'-COMP GROMMET-ISOLATOR UT-WASHER UT-FLAGE COVER-TERMIAL OLP ASS' 4-WA V/V, A 4-WA VALVE ASS' 4-WA V/V, B SOLEOID-V/V CODESER SCREE-GUARD SC-90073T FOAM PU + FOAM PE AS+G/F0% OSM-736SRC SGCC-M SECC-P FOAM PU + FOAM PE ASS' PP pp AD6AC AD6AC /Ó /4Ó SC-90073T ASS' 30kg/mG ID.7 x 900 ID.7 x 550 ASS' 30kg/mG ID.7 x 900 ID.7 x 550 SC-90073T AD6AC SGCC-M AD8AC 5µF450V 8P CH8+THERMOSTAT 4µF450V UD6AC ASS' FOAM PE + FOAM PU SGCC-M SECC-P 48H35IVE5 EPDM M8 P0.8 ORL MRA ASS' SAGIOMIA ASS' SAGIOMIA ASS' P.E.H 00% 6 6 9

21 4-- UD8AC 0(0-~0-3) 9 9(9-~9-3) 8-6(6-,7-) 8-8 4(4-) 7(7-,6-) 8- (-~-7) 4 3(3-) 5(5-~5-5) (-) 6 5(5-) 8 0

22 Parts List o CODE O DB90-053J DB A DB A DB3-0000A DB6-0008C DB B DB A DB A DB90-0A DB99-068A DB A DB A DB99-069A DB A DB6-3965B DB6-3966A DB99-070A DB A DB6-3965B DB6-3966A DB D DB A DB6-099A DB6-000A DB A DB95-00A DB93-06A DB A DB B DB63-00A DB X DB A DB A DB A DB63-065B DB47-000A DB99-050A DB A DB99-05A DB A DB75-300A DB B Description Specification QÕT Remark ASS'-WELD FROT ISUL FROT FA-PROPELLER MOTOR-FA OUT BASE-MOTOR CABIET-SIDE ISUL SIDE ASSÕ COVER-COTROL ASS'-BASE OUT ASS'-VALVE VALVE-PACKED 3/8" VALVE-PACKED /4" ASS' CHECK V/V, A VALVE CHECK TUBE CAPI (C) TUBE CAPI (H) ASS' CHECK V/V, B VALVE CHECK TUBE CAPI (C) TUBE CAPI (H) GUARD-COD ASS' COTROL OUT CASE COTROL OUT CASE PCB OUT C-OIL TERMIAL BLOCK ASSÕ HEATER C-OIL ASSÕ-PCB MAI OUT ASSÕ PARTITIO ISUL PARTITIO COVER-TOP ASS'-COMP GROMMET-ISOLATOR UT-WASHER UT-FLAGE COVER-TERMIAL OLP ASS' 4-WA V/V, A 4-WA VALVE ASS' 4-WA V/V, B SOLEOID-V/V CODESER SCREE-GUARD SC-90073J FOAM PU AS+G/F0% IC-9630SLF6J SGCC-M SECC-P FOAM PE+FOAM PU 94-5V AD8AC AD8AC 3/8Ó /4Ó ASS' 30kg/m G ID.5 X 900 ID.7 X 550 ASS' 30kg/m G ID.5 X 900 ID.7 X 550 SC-90073T AD8AC SGCC-M AD8AC 0µF X 450V 8P CH8+THERMOSTAT.5µF X 450V AD8AC ASSÕ FOAM PE+FOAM PU SECC-P 44H09IWE6 EPDM M8 P0.8 ORL MRA AD8AC SAGIOMIA AD8AC SAGIOMIA ASS' P.E.H 00% 6 6

23 4-3 Romote Control & PCB Box 4-3- Remote Control Parts List o CODE O Description Specification QÕT Remark DB P DB6-044A DB6-045A DB A DB A DB A DB73-00B DB A DB B DB A DB A PH-M DB A DB A DB A 90 x 50 DB B DB6-4043A ASSÕ CODE CASE UP CASE LOW DOOR REMOCO COVER BATTER FILTER REMOCO RUBBER REMOCO ILA LCD ILA REMOCO LABEL REMOCO LABEL DOOR SCREW TAP SPRIG BATTER SPRIG BATTER SPRIG BATTER PE BAG ASSÕ PCB REMOCO HOLDER REMOCO ABS ABS ABS ABS PC SILICO PC PC ART 90 ART 90 PH-M SUS 304 SUS 304 SUS x 50 ABS 6

24 4-3- PCB Box Parts List o CODE O Description Specification QÕT AD6AC3 AD8AC09 Remark DB6-05A CASE-COTROL ABS(94-5V) DB A ASS' MAI PCB ASSÕ - DB93-067A Ò Ò - - DB09-049A IC - MCU MB89635R DB3-0008D THERMISTOR ASS' 03AT -3 DE6-054A TRAS-POWER AC30V DC7V 300mA C-FILM CFS VAC 55K POWER-RELA DIU DCV -6 DE3-0037A FUSE 50V 3.5A 3 DB B ASS' PCB DISPLA - 3

25 4-3-3 AssÕy Display & Module DB B PCB-DISPLA : DB4-004B Parts List o CODE O Description Specification QÕT Remark PCB-DISPLA LED-LAMP LED-LAMP LED-LAMP LED-LAMP MODULE REMOCO C-CERAMIC R-CARBO COECTOR WAFER C-CERAMIC DIODE SWITCHIG C/W DIS & MODULE CASE-CETER PCB UP CASE-CETER PCB LOW SEAL DISPLA UPP SEAL CASE DISPLA DB4-004B DB3-5007A DB A DB6-09A DB A DB7-033A DB7-00F FR- T.6 W0 L70 LTL-30EHJ(ORG/GR) S55(EL) SM55(GR) SO55(ORG) PA46M MD CA OA 50V 04Z RD /8TP -J WLA00-09P CA OA 50V 0Z 448 UL007 AWG#6/9 PC,BLUE ABS,BLK FOAM-PE,BLK 30 FOAM-PE 4

26 5. Refrigerating Cycle Block Diagram IDOOR UIT OUTDOOR UIT Way valve T Check valve (A) (B) Liquid side Capillary tube Capillary tube Cross fan Cross fan Heat exchanger (Condenser) Propeller fan Heat exchanger (Evaporator) T Gas side Compressor-A Compressor-B 3Way valve 4Way valve Refrigerating cycle temperature and pressure STD Pressure Piping Temp.( F) Temp. Condition ( F) Operating Condition (psi) Indoor Outdoor T T 3-WA V/V DB WB DB WB Standard Cooling Max over load Low temp Standard Heating Max over load Deice

27 6. Wiring Diagrams 6- Indoor Unit (AD6AC3/AD8AC09) 6

28 6- Outdoor Unit (UD6AC/UD8AC) 7

29 7. Schematic Diagrams 7- Indoor Unit 8 9

30 7- Outdoor Unit 30 3

31 ELECTROICS