SERVICE Manual AIR CONDITIONER INDOOR UNIT MH18ZC1(C2)-09 MH19ZC1(C2)-07 MH19ZC1(C2)-12 MH24ZC1(C2)-12 MH26ZC1(C2)-07 MH26ZC1(C2)-12

Transcription

1 ROOM AIR CODITIOER IDOOR UIT MH8ZC(C2)-09 MH9ZC(C2)-07 MH9ZC(C2)-2 MH24ZC(C2)-2 MH26ZC(C2)-07 MH26ZC(C2)-2 OUTDOOR UIT MH8ZC(C2)X MH9ZC(C2)X MH24ZC(C2)X MH26ZC(C2)X SERVICE Manual AIR CODITIOER COTETS. Precautions 2. Product Specifications 3. Operating Instructions and Installation 4. Disassembly and Reassembly 5. Troubleshooting 6. Exploded Views and Parts List 7. PCB Diagrams 8. Wiring Diagrams 9. Schematic Diagrams

2 . Precautions. Warning: Prior to repair, disconnect the power cord from the circuit breaker. 2. Use proper parts: Use only exact replacement parts. (Also, we recommend replacing parts rather than repairing them.) 3. Use the proper tools: Use the proper tools and test equipment, and know how to use them. Using defective tools or test equipment may cause problems later-intermittent contact, for example. Fig. - Avoid Dangerous Contact 4. Power Cord: Prior to repair, check the power cord and replace it if necessary. 5. Avoid using an extension cord, and avoid tapping into a power cord. This practice may result in malfunction or fire. 6. After completing repairs and reassembly, check the insulation resistance. Procedure: Prior to applying power, measure the resistance between the power cord and the ground terminal. The resistance must be greater than 30 megohms. Fig. -2 o Tapping and o Extension Cords 7. Make sure that the grounds are adequate. 8. Make sure that the installation conditions are satisfactory. Relocate the unit if necessary. 9. Keep children away from the unit while it is being repaired. 0. Be sure to clean the unit and its surrounding area. Fig. -3 o Kids earby! Fig. -4 Clean the Unit -

3 MEMO -2

4 2. Product Specifications 2- Table Item Type Performance Power Size Cooling/Heating Dehumiditying Air volume(cooling/heating) oise Power Power Consumption Air volume(cooling/heating) Operating Current Air volume(cooling/heating) Starting current(a/b-unit) Power cord(option) Connection cable(option) Fuse capacity Outer WxHxD Dimension Weight Refrigerant pipe Drain hose Compressor Blower Heat exchange Refrigerant control unit Freezer oil capacity Refrigerant to caarge(r22) Protection device Cooling test condition Maxium operation condition Type Model name Capacitor Motor Type Motor Liquid Gas Type Rated output Type Rated output Model Kw BTU/h Kcal/h L/h m 3 /min db ø-v-hz W A A A mm inch kg OD(mm)xL(m) OD(mm)xL(m) OD(mm)xL(m) W W cc MH8ZC(C2) IDOOR UIT OUTDOOR UIT MH8ZC(C2)-09 MH8ZC(C2)X Wall-Mounting Multi Split 2.63/ / / / / / / V~, 50Hz 890/ / / / / x 3core.0 x 4core x 245 x x 620 x x 9.64 x x 24.4 x ø6.35 x 5 - ø9.52 x 5 - ø8.0 x Rotary A:44B092JWEL - B:44B092JWEL A:30µF 420VAC - B:30µF 420VAC Resin Steel Cross-flow Propeller Row 2Step 2Row 24Step A/B-Unit:Capillary tube A:360 - B:360 A-Unit:750g, B-Unit:850g A:MRA B:MRA Indoor unit:db27 C WB9 C Outdoor unit:db35 C WB24 C Indoor unit:db32 C WB23 C Outdoor unit:db43 C WB26 C 2-

5 Table (cont.) Item Type Performance Power Size Cooling/Heating Dehumiditying Air volume(cooling/heating) oise Power Power Consumption Air volume(cooling/heating) Operating Current Air volume(cooling/heating) Starting current(a/b-unit) Power cord(option) Connection cable(option) Fuse capacity Outer WxHxD Dimension Weight Refrigerant pipe Drain hose Compressor Blower Heat exchange Refrigerant control unit Freezer oil capacity Refrigerant to caarge(r22) Protection device Cooling test condition Maxium operation condition Type Model name Capacitor Motor Type Motor Liquid Gas Type Rated output Type Rated output Model Kw BTU/h Kcal/h L/h m 3 /min db ø-v-hz W A A A mm inch kg OD(mm)xL(m) OD(mm)xL(m) OD(mm)xL(m) W W cc MH24ZC(C2) IDOOR UIT OUTDOOR UIT MH24ZC(C2)-2 MH24ZC(C2)X Wall-Mounting Multi Split 3.5/ / / / / / / V~, 50Hz 280/ / /5.8.2/ / x 3core.0 x 4core x 245 x x 790 x x 9.64 x x 3. x ø6.35 x 5 - ø2.7 x 5 - ø8.0 x Rotary A:48A24JVEG - B:48A24JVEG A:30µF 420VAC - B:30µF 420VAC Resin Steel Cross-flow Propeller Row 2Step 2Row 30Step A/B-Unit:Capillary tube A:40 - B:40 A-Unit:000g, B-Unit:000g A:MRA B:MRA Indoor unit:db27 C WB9 C Outdoor unit:db35 C WB24 C Indoor unit:db32 C WB23 C Outdoor unit:db43 C WB26 C 2-2

6 MH9ZC(C2) MH26ZC(C2) IDOOR UIT MH9ZC(C2)-07 IDOOR UIT MH9ZC(C2)-2 OUTDOOR UIT MH9ZC(C2)X IDOOR UIT MH26ZC(C2)-2 IDOOR UIT MH26ZC(C2)-07 OUTDOOR UIT MH26ZC(C2)X Wall-Mounting Multi Split 2.05/ / / / / / / / / / / / / / / / / / x2-5.5/ / / / V~, 50Hz 700/ / / / / / / / / / /5..2/ / x 3core.0 x 4core x 245 x x 245 x x 620 x x 245 x x 245 x x 790 x x 9.64 x x 9.64 x x 24.4 x x 9.64 x x 9.64 x x 3. x ø6.35 x 5 ø6.35 x 5 - ø6.35 x 5 ø6.35 x 5 - ø9.52 x 5 ø2.7 x 5 - ø2.7 x 5 ø9.52 x 5 - ø8.0 x 2 ø8.0 x 2 - ø8.0 x 2 ø8.0 x Rotary - - Rotary - - A:44A070JWEC A:48A24JVEG - - B:48A24JVEG B:48A24JVEG - - A:25µF 450VAC A:30µF 420VAC - - B:30µF 420VAC B:30µF 420VAC Resin Resin Steel Resin Resin Steel Cross-flow Cross-flow Propeller Cross-flow Cross-flow Propeller Row 2Step 2Row 2Step 2Row 24Step 2Row 2Step 2Row 2Step 2Row 30Step A/B-Unit:Capillary tube A-Unit:Capillary tube, B/C-Unit:Auto Expansion valve - - A:260 A: B:40 B:40 A-Unit:740g, B-Unit:950g A-Unit:860g, B/C-Unit:250g - - A:MST24AM-2008 A:MRA B:MRA B:MRA Indoor unit:db27 C WB9 C Outdoor unit:db35 C WB24 C Indoor unit:db32 C WB23 C Outdoor unit:db43 C WB26 C 2-3

7 2-2 Dimensions 2-2- Indoor Unit (Front view) Air in Air out (Remote control) Installation plate 2-4

8 Product Specifications Outdoor Unit 2-2-2(a) MH24ZC(C2)X (Front view) (Rear view) (b) MH8ZC(C2)X/MH9ZC(C2)X (Front view) (Rear view)

9 Product Specifications Outdoor Unit 2-2-2(c) MH26ZC(C2)X (Front view) (Rear view)

10 2-3 Refrigerating Cycle Block Diagram 2-3- MH8ZC(C2)X / MH9ZC(C2)X / MH24ZC(C2)X IDOOR UIT OUTDOOR UIT 2Way valve T Check valve (A) (B) Liquid side Capillary tube Capillary tube Cross fan Cross fan Heat exchanger (Condenser) Propeller fan Heat exchanger (Evaporator) T2 Gas side Compressor-A Compressor-B 3Way valve 4Way valve Cooling Heating Gas leak check point Refrigerating cycle temperature and pressure Cooling Heating STD Pressure Piping Temp.( C) Temp. Condition ( C) Operating Condition (kg/cm 2 G) Indoor Outdoor T T2 3-way valve DB WB DB WB Standard 5.0~ A or B Max over load 5.4~ Low temp. 3.5~ Standard 5.0~ A + B Max over load 5.4~ Low temp. 3.5~ Standard 7~ A or B Max over load 9~ Deice Standard 7~ A + B Max over load 9~ Deice

11 Product Specifications MH26ZC(C2)X 2-8

12 3. Operating Instructions and Installation 3- Operating Instructions 3-- The Feature of key in remote controller O 2 3 FEATURE OF KE (UP) (DOW) FUCTIO OF KE Power On/Off button to start and stop airconditioner or timer set up Temp. up button. To increase the temperatute by the pressing the temperature button Temp. down button. To decrease the temperature by the pressing the temperature button Each time you press this button Mode is changed in the following order : Auto Mode : Dry Mode : Cool Mode : Fan Only 4 Press until the appearance. the air condition cools or heats the room as quickly as possible. after 30minutes, the air, the airconditioner is reset automatically to the previous mode Press until the appearance. the sleep timer can be used when you are cooling or heating your room to switch the air conditioner off automatically after a perriod of six hours. 5 Each time you press this button, FA SPEED is changed in the following order. 6 Adjust air flow vertically. 7 The O Timer enables you to switch on the air conditioner automatically after a given period of time that is from 30 minutes to 24 hours. To cancel the On Time, press the (Set/Cancel) button. 8 The Off Timer enables you to switch off the air conditioner automatically after a given period of time that is from 30 minutes to 24 hours. To cancel the On Time, press the (Set/Cancel) button. 9 To select the 5 way function with the remote control, press the 5 way button one or more times until the desired mode is selected.. Each time you press the 5 way button Each 5 way indicator on the indoor unit comes on in or der. 3-

13 Operating Instructions and Installation 3--2 ame & Function of Key in remote controller. AUTO MODE : In this mode, operation mode(cool, HEAT) is selected automatically by the room temperature of initial operation. Room Temp Tr 2 C+ T 2 C + T>Tr Operation Type Cool Operation (Set Temp:AUTO SETTIG) Heat Operation (Set Temp : 22 C+ T) T= - C, -2 C, 0 C+ C+2 C T is controlled by setting temperature up/down key of remote controller 2. COOL MODE : The unit operates according to the difference between the setting and room temperature. (8 C~30 C) 3. HEAT MODE : The unit operates according to the difference between the setting and room temperature.(6 C~30 C) *Prevention against cold wind : For about 3~5 minutes after initial operation, thermo control or de-ice, the indoor fan will either not operate or operate very slowly, then switch to the selected fan speed. This period is to allow the indoor unit's heatexchanger to prewarm before emitting warm air. *High temperature release function : The outdoor unit for and compressor O/OFF control for safety operation, when the overheat is heat exchanger of indoor unit. *De-ice : Deicing operation is controlled by indoor unit's heat exchanger temperature and accumulating time of compressor's operation. De-ice end by sensing of the processing time by de-ice Condition. 5. TURBO MODE : This mode is available in AUTO, COOL, HEAT, DR, FA MODE. When this button is pressed at first, the air conditioner is operated powerful state for 30 minutes regardless of the set temperature, room temperature. When this button is pressed again, or when the operating time is 30 minutes, turbo operation mode is canceled and returned to the previous mode. *But, if you press the TURBO button in DR or FA mode that is changed with AUTO mode automatically. 6. SLEEP MODE : Sleep mode is available only in COOL or HEAT mode. The operation will stop after 6 hours. *In COOL mode : The setting temperature is automatically raised by C each hour When the temperature has been raised by total of 2 C, that temperature is maintained. *In HEAT mode : The setting temperature is automatically droped by C each hour. When the temperature has been droped by total of 2 C, that temperature is maintained. 7. FA SPEED : Manual (3 step), Auto (4 step) Fan speed automatically varies depending on both the difference between setting and the room temperature. 4. DR MODE : Has 3 states, each determined by room temperature. The unit operates in DR mode. *Compressor O/OFF Time is controlled compulsorily(can not set up the fan speed, always breeze). *Protective function : Low temperature release. (Prevention against freeze) 3-2

14 Operating Instructions and Installation 8. COMPULSOR OPERATIO : For operating the air conditioner without the remote controller. *AUTO : The operating is the same function that AUTO MODE in the remote controller. And each time you press the button the 5WA func-tion is changed as follow. STD ATURE POWER SAVIG SILECE POWER OFF Each time you press This button, 5WA function is changed in the following order STD(standard) ATURE Quenching(High-speed) Saving(Power- Saving) Quite STD(standard)( ) : General operation Mode ATURE( ) : The unit is operated according to health pattern control POWER( ) : The unit is operated in powerful state SAVIG( ) : The unit is operated in power saving state SILECE( ) : The unit is operated quitely Each mode has Auto, Cool and SLEEP operation designed in advance.. SELF Diagnosis Check Point Indoor unit room temperature sensor error(open or short) Indoor unit heat exchanger temperature sensor error(open or short) Indoor fan mal function EEPROM error Option error(option wasn t set up or option data error) : LED blinking : LED off LED DISPLA STD ATURE POWER SAVIG SILECE TIMER 2. BUZZER SOUD : Whenever the O/OFF button is pressed or whenever change occurs to the condition which is set up or select, the compulsory operation mode, buzzer is sounded "beep". 9. SWIG : BLADE-H is rotated vertically by the stepping motor. *Memory louver : When O/OFF button is pressed at stop state, the BLADE-H returns to its original location which is operating state before stop *Swing Set : Press the button under the remote control is displayed on LCD the and the blades move up and down. If the one more time press the button, blatles location is stop Hour O/OFF Real Setting Timer. : The air conditioner is turned O at a specified time using. OFF TIMER : The air Conditioner is turned OFF at a specified time using. *O TIMER : Only timer LED lights on. *OFF TIMER : Both timer and operation LED lights on. 3-3

15 3-2 Technical Document 3-2-(a) MH24ZC(C2)-2 / MH9ZC(C2)-2 / MH26ZC(C2) Cooling Characteristics - Outdoor Temperature Test Condition Indoor Unit (DB/WB) : 27/9 Voltage/Frequency : 240V/50Hz In case of 2Unit, Capacity & Current multiplied by 2 Cooling Capacity & Air Outlet Temperature Cooling Capacity Air Outlet Temp Cooling Capacity(Btu/h) Air Outlet Temperature(DB) 000 2/5 2/9 35/24 43/26 3 Outdoor Temperature(DB/WB) Current & Low Pressure Current Low Pressure 7 7 Current (A) Low Pressure (Kg/cm 2 ) 4 2/5 2/9 35/24 43/26 4 Outdoor Temperature(DB/WB) 3-4

16 Operating Instructions and Installation Heating Characteristics - Outdoor Temperature Test Condition Indoor Unit (DB/WB) : 20/5 Voltage/Frequency : 240V/50Hz In case of 2Unit, Capacity & Current multiplied by 2 Heating Capacity & Air Outlet Temperature 4000 Heating Capacity Air Outlet Temp Cooling Capacity(Btu/h) Air Outlet Temperature(DB) /6 2/ -5/-6 30 Outdoor Temperature(DB/WB) Current & Low Pressure Current Low Pressure 7 22 Current (A) Low Pressure (Kg/cm 2 ) 4 7/6 2/ -5/-6 7 Outdoor Temperature(DB/WB) 3-5

17 Operating Instructions and Installation 3-2-(b) MH8ZC(C2)-09 / MH9ZC(C2)-07 / MH26ZC(C2)-07 Cooling Characteristics - Outdoor Temperature Test Condition Indoor Unit(DB/WB) : 27/9 Voltage/Frequency : 240V/50Hz Cooling Capacity & Air Outlet Temperature Cooling Capacity Air Outlet Temp Cooling Capacity(Btu/h) Air Outlet Temperature(DB) /5 35/24 43/26 Outdoor Temperature(DB/WB) 0 Cooling Capacity & Low Pressure Cooling Capacity Low Pressure Cooling Capacity(Btu/h) Low Pressure(kg/cm 2 ) /5 35/24 43/26 Outdoor Temperature(DB/WB) 3 3-6

18 Operating Instructions and Installation Heating Characteristics - Outdoor Temperature (B or C Indoor Unit Only) Test Condition Indoor Unit(DB/WB) : 20/5 Voltage/Frequency : 240V/50Hz Heating Capacity & Air Outlet Temperature Heating Capacity Air Outlet Temp Heating Capacity(Btu/h) Air Outlet Temperature(DB) /6 2/ Outdoor Temperature(DB/WB) 34 Heating Capacity & High Pressure Heating Capacity High Pressure Heating Capacity(Btu/h) High Pressure(kg/cm 2 ) /6 2/ Outdoor Temperature(DB/WB) 4 3-7

19 MEMO 3-8

20 4. Disassembly and Reassembly Stop operation of the airconditioner and remove the power plug from the wall outlet before repairing the unit 4- Indoor Unit o Parts Procedure Remark Front Grille ) Stop the air conditioner operation and block the main power. 2) Seperate 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. *Taking off the deodorizing filter. 5) Loosen one of the right fixing screw and seperate the terminal cover. 6) 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. 4-

21 Disassembly and Reassembly o Parts Procedure Remark 2 3 Ass y Tray Drain. Electrical Parts (Main PCB) ) Do above 2) 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. ) Do, 2, above Separate the drain hose from the extension drain hose. 2) Pull tray drain out from the back body. 4 Heat Exchanger ) Do and 2, 3, above 2) Loosen two fixing earth screws of right side. 3) Separate the connection pipe. 4) Separate the holder pipe at the rearside. 5) Loosen the three fixing screws of right and left side. 6) Lifting the heat exchanger up a little to push the up side for separation from the indoor unit. 5 Fan Motor and Cross Fan ) Do 2 3 4, above. 2) Loosen the fixing two screws and separate the motor holder. 3) Loosen the fixing screw of fan motor. (By use of M3 wrench) 4) Separate the fan motor from the fan. 5) Separate the fan from the left holder bearing. 4-2

22 Disassembly and Reassembly o Parts Procedure Remark Cabinet ) Turn off the unit and remove the power cable 2) 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. <MH24ZC(C2)X/MH26ZC(C2)X> * When you assemble the parts, check if the each parts and electric connectors are fixed firmly. <MH8ZC(C2)X/MH9ZC(C2)X> 2 Fan Motor & Propeller Fan ) Do Procedure above. 2) Remove the nut flange. (Turn to the right to remove as it is a left turned screw) 3) Disassemble the propeller fan. <MH24ZC(C2)X/MH26ZC(C2)X> <MH8ZC(C2)X/MH9ZC(C2)X> 4-3

23 MEMO 4-4

24 5. Troubleshooting 5- Items to be checked first ) The input voltage should be rating voltage 0% range. The airconditioner may not operate properly if the voltage is out of this range. 2) 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 5 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 STD operation indication LED blinks when a power plug of the indoor unit is plugged in for the first time. 2 In a COOL operation mode, the compressor does not operate at a room temperature higher than the setting temperature that the I DOOR FA should operate. In a HEAT operation mode, the compressor does not operate at a room temperature lower than the setting temperature that indoor fan should operate. 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 it 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. In happens after a delay of 3 minutes when the compressor is reoperated. The same phenomenon occurs when a power is on. As a phenomenon that the compressor is reoperated after a delay of 3 minutes, the indoor fan is adjusted automatically with reference to a temperature of the air blew 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 9 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 overheated air 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 20% of the total heater operation The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air frozen depending on the inside/outside air temperature. 4) Indoor unit observes operation condition of the air conditioner, and displays self diagnosis details on the display panel. O Display Standard Timer ature Power (GREE) X (GREE) X X (GREE) (GREE) X X X X X X X X X X X X X Self Diagnosis Restore from power failure (input initial power) Indoor unit Room sensor Error (open or short) Indoor unit heat exchanger temperature sensor Error (open or short) Indoor fan malfunctioning (for speed is below 450rpm) In case that the communication between the indoor unit and outdoor unit is not made for 60 seconds Outdoor sensor Error (open or short) - Outdoor sensor - Pipe sensor A, B The malfunction ot 4way valve in heat mode operation. 5-

25 5-2 Set up the Model option The Method for Setting up the model option with remocon It is necessary to set up option code after replacing the main-pcb as a service parts. Make sure that you can set up the option of code the remote controller after you replace the main PBA otherwise, the unit won t be working properly and all LED lamps on display will be flickering. Step : Preparing the remocon to main PCB option set st Remove the battery from the remocon. 2 nd Press the temperature raise/down button simultaneously and insert the battery again. 3 rd Make sure the remocon display shown as. Step 2 : Second stage preparation of the remocon optio-set. ote ; In case the wrong letter has been selected, continue to press the button until the correct letter appears. st If the first stage number appears on the display, proceed to the second stage. 2 nd Every time the! and & button, and each continue to appear. 3 rd Whenever pressing #, $, %, ^, *, (, ),, 2 button, the number increase from 0~9( ) and A, b, C, d, E, F each time.! If the first number is, it is correct otherwise press until When pressing the button ~ appear on the display, select one of them. # When pressing the button ~ appear on the display, select one of them. $ When pressing the button ~ appear on the display, select one of them. % When pressing the button ~ appear on the display, select one of them. ^ When pressing the button ~ appear on the display, select one of them. 5-2

26 Troubleshooting! If the first number is, it is correct otherwise press until When pressing the button ~ appear on the display, select one of them. # When pressing the button ~ appear on the display, select one of them. $ When pressing the button ~ appear on the display, select one of them. % When pressing the button ~ appear on the display, select one of them. ^ When pressing the button ~ appear on the display, select one of them. Step 3 : Reconfirming option set after completion (in case of ex ) After pressing selector for the mode, the display shown as. After pressing selector for the mode, the display shown as. Step 4 : Pressing the O/OFF button ( ) When pressing the operation O/OFF key with the direction of remote controller for unit, the sound Ding or Diriring is heard and the first LED lamp on the left side is flickering at the same time, then the input of option is completed. (If the diriring sound isn t heard, try again pressing the O/OFF button.) Step 5 : Unit operation test-run First, Remove the battery from the remote controller. Second, Re-insert the battery into the remote controller. Third, Press O/OFF key with the direction of remote controller for set. Error Mode st If all lamps of indoor unit are flickering, Plug out and plug in again and pressing O/OFF key to retry. 2 nd If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for it s model. 5-3

27 Troubleshooting <Table of the option code> MODEL OPTIO CODE MH8ZC EA MH8ZC EA MH9ZC b7 MH9ZC b7 MH9ZC F MH9ZC F MH24ZC d MH24ZC d MH26ZC d9 MH26ZC d9 MH26ZC F MH26ZC F 5-4

28 5-3 Checking and Testing Operations (Outdoor Unit) To complete the installation, perform the following checks and tests to ensure that the air conditioner is operating correctly.. Review all the following elements in the installation: Installation site strength Piping connection tightness to detect any gas leakages Connection wiring Heat-resistant insulation of the piping Drainage Earthing wire connection Correct operations (follow the steps below) Room select switch in the indoor unit 2. Apply the power to the outdoor unit. - Check the fuse (250V~, 5A) : The fuse is open when the power line (L, ) is short. OUTDOOR UIT 3. Check the connection of PCB communication of outdoor unit. (Check whether the red LED of outdoor unit PCB is flickering.) a The communication lamp is flickering after the display of each unit on the outdoor PCB display part. (every one second). LED is not flikering, if the connection is bad or the room select switch is located in the wrong position. - LED lamp (red) flickering after display of A (0.5 sec) - LED lamp (red) flickering after display of b (0.5 sec) - LED lamp (red) flickering after display of C (0.5 sec) ote : PCB switch C is used for triple split multi air conditioner. A : PCB display B : Red LED C : PCB switch b TEST OPERATIG C B A C Result : If all of three units display lamps are flickering, the connection wires and the room option connections are good. If the lamp is not flickering, check as follows: A. Check the display part of indoor unit of each unit (A,B) after outdoor unit PCB switch S/W-A is on. Check the status of each unit indoor room select switch. (Adjust the select switch suitable to the unit A, B.) - A unit : STADARD LED on, TIMER LED flickering - B unit : STADARD LED on, TIMER and ATURE LED flickering - C unit : STADARD LED on, TIMER and ATURE, POWER LED flickering (In case of triple split multi air conditioner) UIT A B C STADARD TIMER ATURE POWER Lamp O Lamp OFF Lamp Flasher B. Check the communication connection of outdoor unit PCB (Check whether the red LED of outdoor unit PCB is flickering). The communication lamp is flickering after the display of each unit on the outdoor unit PCB. (every one second) - LED lamp (red) is flickering after display of A (0.5 sec) - LED lamp (red) is flickering after display of b (0.5 sec) - LED lamp (red) is flickering after display of C (0.5 sec) Result: If all of three units display lamps are flickering, the connection wires and the room option connections are good. 4. Check the test operation status by pressing the PCB switch S/W-A and S/W-B of outdoor unit. Check the operation status by pushing the switch one at time. Perform the test operation only for the unit selected last. Check the pipe pressure and the other operation status during the test operation. Check items when the error occurs during the test operation (each unit) - Check there is enough refrigerant. - Check pipe connections. 5-5

29 Troubleshooting DISPLA EXPLAATIO Outdoor sensor error (Short/Open) Outdoor A cond pipe sensor error (Short/Open) REMARK Be sure to check after applying the power to the outdoor unit. Outdoor B cond pipe sensor error (Short/Open) Outdoor C cond pipe sensor error (Short/Open) A unit test operation error B unit test operation error Display when the test operation finishes. When the pipe temperature difference of indoor unit (pipe temperature 4 minutes before - Actual pipe temperature) is less than 5 C. C unit test operation error A unit test communication error Be sure to check during the test operation. B unit test communication error C unit test communication error A,B,C unit all communication error Display of power application. A room test operation OK Display 4 minutes after the COMP is on. B room test operation OK C room test operation OK Communication unit number display : A unit Communication unit number display : B unit Communication unit number display : C unit (In case of triple split multi air conditioner) Refrigerant leaks ormal operation Unit A,B and C are changed every one second. The communication lamp is flickering after display of each unit. (possibility to check the communication status) During the test operation the unit under test is on and off every 0.25s. High temperature of the A cond High temperature of the B cond 5-6

30 5-4 Fault Diagnosis by Symptom 5-4- o Power (completely dead)-initial diagnosis ) Checklist : () Is input voltage normal? (2) Is AC power linked correctly? (3) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC) 2) Troubleshooting procedure Remove power cord and plug in again in approx. 5 seconds Replace PCB display Is DC voltage of PCB display normal? Is rating voltage ±0% range applied to the primary side (~,~) of the BD7 Check linkage between power cord and terminal tap Check fuse Is operation lamp blinking? Does operation start when run/stop button on the remote controller unit pushed? Is transmission display of the remote controller unit blinking? Is "beep"sound heard from the main unit? Is DC voltage of the PCB module normal? ormal Refer to remote control unit fault diagnosis Replace PCB module. Is 4~8VAC appear in the secondary side (+, -) of BD7 5VDC Is voltage of #60 (indoor fan) of the micom normal? DC5V DC2V Is voltage at SS7(indoor fan) Replace SMPS PARTS 0ms O Check connections compressor 4-way valve, outdoor fan and indoor fan. Replace R7, R73, R72 and SS7 Is voltage at #52 terminal of the micom normal? Is output voltage of ICO2 normal? 0ms Check PCB pattern. Replace main PCB. Replace ICO2 Replace resonator (X30) Is operation normal? Are voltage at #48 and #49 of the micom normal? Replace micom 250ns Is voltage output terminal of TLP80(PC02) normal? OK Replace TLP80(pc02) OK 5-7

31 Troubleshooting When the power voltage is not available ) Inspection items () Is the power voltage is normal? (The rating voltage ±0% range) (2) Is the power cord is correctly connected and is the contact good? (3) Does the sound ting 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. 2) 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 ting? 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 Ass y display PCB and the receiving module? Is the fuse (F70, 250V, 3.5A) of PCB open? Replace the fuse (250V, 3.5 A). Replace of Ass'y display PCB Is the voltage at Socondary side of transformer of PCB (T7)? (AC5V~AC25V) Transformer is out of order - replace Is the output voltage of voltage regulator IC (KA 782) DC 0V and 2V? Repair and replace the power source rectifying diode (D0- D05) and KA782. 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 5-8

32 Troubleshooting o Power (Outdoor unit) ) Inspection items () A Is the power source normal (The rating Voltage ±0% range)? (2) Is the outdoor power connected normally? (() of terminal : L, (2) 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: 2) 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, (2) ) 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 Assemble the transformer in the normal way. Replace the fuse (F70) 250V 3.5A. Measurement of resistance of power transformer Are they as follows? st side 90 ~ 20Ω 2nd side 0.9 ~.Ω Is the terminal of PCB terminal (R7, 72, 73) are assembled in the correct position? 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 25V) Is the fuse (F0, 250V 2 A) blown out? Check whether the output voltage of IC0 (KA 782) is DC 2V. After watching the display of PCB board, assemble the color and shape of housing correctly as follows: BLK WHT RED BLK WHT RED Replace the fuse F0 (250V 2 A). Check and Replace the rectifying diode of power side (D0 - D04) and KA 782. Check whether the output voltage of IC02 (KA 7805) is DC 5V. Replace the IC 02 (KA7805) Replace the outdoor unit Ass'y main PCB. 5-9

33 Troubleshooting When the fan of indoor unit does not operate ) Inspection items () Is the power voltage normal? (2) 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 (C43)? (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 20V and higher shown across the indoor fan connector (C73)? Is the type of MICOM (IC 04) Pin no. 63 old type? 20Hz Is the pin no. 2 of IC 06 (KID 65003) the old type? 20Hz Replace the IC 06 (KID 65003) and SS7(G3MB202pl). Is the pin no 25 of MICOM the old type? Replace Q40 (Ksc 945). Replace the indoor unit PCB Ass'y due to the Micom defect. 5-0

34 Troubleshooting 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. (2) Is the power voltage normal? (3) Is the contact of outdoor unit fan motor (C73) good? (4) Is the winding resistance of outdoor unit fan motor 58Ω at Hi side and 43Ω at low side? (5) The outdoor unit fan motor operates with Hi at over 28 C and low at below 26 C during the cooling operation, and operates with Hi at below 4 C and low at over 5 C during the heating operation. 2) 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))(the rating voltage ±0% range)? Is no. ( 2) 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 ass y * 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. (2) 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 5-

35 Troubleshooting When the UP/DOW Louver Moter Does ot Operate. (Initial Diagnosis) ) Checklist : () Is input voltage normal? (2) Is the UP/DOW louver motor properly connected with the connector (C6)? 2) 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 5-7. 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) UP/DOW louver motor is faulty. Driver IC05 (KID65003) is faulty. 5-2

36 Troubleshooting If Operation By Remote Control Unit Is Impossible. (Initial Diagnosis) ) Troubleshooting procedure Remove power cord and plug in again approx. 5 Seconds Is operation lamp blinking? sound heard from the indoor unit when O/OFF button on the remote control unit pushed? Voltage of battery less than 2.5V (Remote Control Unit)? LCD display status of REMOCO normal? Check as in the procedure O Power parts. Refer to page 5-7. ormal Replace battery. LCD is faulty. Transmission display lamp ( ) blinking when O/OFF button on the remote control unit pushed? Voltage at PI #30 of Remocon Micom change? Voltage at collecter of Q60 or Q602 change? Replace button. Micom is faulty. Q60(C4375) or Q602(C623) is faulty. IR LED(CL-L5EU) is faulty. Voltage at pin #26 of micom (IC04) change (IDOOR UIT)? Micom (IC04) is faulty. Receiver module is faulty. 5-3

37 Troubleshooting 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) (2) Is the power voltage normal? (3) Is the connecting of 4 way valve A (C 75) and B (C 76) good? 2) 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 ass y *4 way valve operating conditions () During the defrost control, put the 4 way valve A(B) off. (2) 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. 5-4

38 Troubleshooting When the compressor does not operate ) Inspection items () Is the COMP A under the operating conditions? (cooling operating of A, B(C) room) (2) Is the power voltage normal? (the rating voltage ±0% range) (3) Are the connector connection of COMP A(R 72, 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. 2) 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 Is comp A (B) on? Is the voltage (the rating voltage ±0% range) shown across the terminal of Comp A(B) power applied? *Refer to the power measuring terminal ormal (comp A (B ) off) Keep Comp A (B ) off 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 (52) of IC 04 (micom) at high (DC 5V)? Is comp A (B ) under the operating condition? ormal (comp A (B ) off) Defect of Ry 72, 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 (2) Comp B : Comp on /off control in accordance with the B(C) room during the heating and cooling indoor unit operation * Comp A( ) power measuring terminal () Comp A measuring ; R 73 (4) R 72 (4) (2) Comp B measuring ; R 7 (4) R 72 (4) (3) Power input ; R 72 (3) R 73(3) BLK WHT RED R72 (3) (4) R7 (3) (4) R73 (3) (4) BLK WHT RED 5-5

39 5-5 PCB Inspection 5-5- Cautions for Part Replacement. The human body carries much static electricity. Before touching a part for repair, replacement or the similar purpose, be sure to touch a grounded metallic portion by hand to let the static electricity go through the matallic portion to the earth. Espectially when handling any micro computer or IC, carefully remove such static electricity before touching them. 2. When repairing any part on a work bench, be sure to place an insulative sheet on the bench and always keep the sheet surface neat without any metal fragments. If any such fragment touches a part, a secondary trouble will possibly be caused in the part. 3. Before replacing any parts, be sure to turn off the power supply. If such replacement is done with the power supply kept on, an electric shock, short circuit or destruction of a part may result. 4. During replacement or repair of a part, carefully handle it : The printed circuit board has fine lead wires (jumper wires) and glass-made parts (diode) on its substrate. So if a circuit board is roughly handled, such lead wires and parts will be easily broken or damaged by bending or shock. 5. When soldering the lead wires of any new part, be sure to polish them using an emery paper or the like before solding them. Since the lead wires of any new part are covered with an oxide film, solder cannot adhere to the lead wires if not polished. 6. When soldering any part, care should be exercised not to apply any high-wattage soldering iron to the part for a long time. Some parts are of so low a heat resistance that they may be broken or have the properties changed if a soldering iron is so applied (Otherwise, the pattern may possibly be separated and raised). 7. The heat of the soldering iron should be transfered to the entire object to be soldered. If the solder pieces are not well fused due to insufficient transfer of the heat from the soldering iron, no satisfactory electrica continuity can be assured even if the soldered objects appear well connected to each other. 8. The solder used should be limited to a minimum. If excessive solder is used, it will cause inter-pattern contact, which may cause malfunction of the circuit Procedure The parts should be replaced in the following procedure. Check for any faulty part. Detach the faulty part. Replace it with a new part. Check the operation of the new part. The repair is completed. 5-6

40 Troubleshooting Detailed Procedure o. Malfunction Checking point (symptoms) Causes Pull out the power plug from the AC terminal and confirm the fuse on the PCB assembly. Is the broken?. Voltage over 2. Indoor unit fan motor short-circuit. 2 Turn the power on. If lamp blinks trouble is not related to the items through 4 on the right. Voltage check. AC voltage at both end of transformer Primary? the rating voltage ±0% range. Irregular power code or power fuse, or poor wiring. 2. AC voltage at both end of transformer secondary? 4-8Vac 2. Transformer is faulty. 3. DC voltage at OUT and GD of IC0 (KA782)? 2VDC 3. Power circuit is faulty. 4. DC voltage at OUT and GD of IC02? 5VDC 4. Power circuit is faulty. 5. DC voltage at Q20 Base and GD change? squarewave 5. Q20 is faulty. D0~D04 (I4007) 3 Set TURBO operating mode when RMC switch pushed after a delay of 3 minutes. (A-unit and B-unit) Voltage check. Voltage of relay (R7, 72, 73) coil Voltage at pin#3, 4, 5 of IC07 : 2VDC. Relay(R 7) coil is open. IC6(KID65003A) is faulty. 2. Voltage at R72 o # and R7 o #, R72 o # and R73 o #, the rating voltage ±0% range 2. Relay contactor is faulty or Relay is faulty 4 Set operating mode when RMC switch pushed.. TURBO mode. Compressor does not operate.. Temperature of Heat exchange is lower. 2. PCB is faulty. 3. Room sensor or Heat exchanger temperature sensor is faulty 5 Set operating mode when RMC switch pushed.. [FA] mode 2. Fan speed [Hi] 3. Continuously operation. Voltage at #% both ends of C73 : above 80V~ 2. Indoor unit fan motor does not operate.. Indoor unit fan motor is faulty. 2. Poor connection of indoor fan motor and connector of RPM sensing (C43) 5-7

41 5-6 Fault Diagnosis of Major Parts Parts Diagnosis Temp.Sensor Measure resistance with a tester. Heat ex. Sensor ormal Abnormal 8KΩ~27KΩ at ambient temperature (+0 C ~ +30 C), O Ω open or short Indoor Fan Motor Measure resistance between terminals (C73) with a tester ormal At ambient temperature (0 C ~ 30 C) between Resistance Red, ellow 90±0Ω Red, Blue 70±0Ω Abnormal Measure the voltage between ground and signal wire of the fan motor (C43) ormal between Gray, Orange ellow, Orange Voltage 05V~4.5V 5V Abnormal Abnormal if voltage does not change from 0V to 5V. Outdoor Fan Motor ormal At ambient temperature (0 C ~ 30 C) between Resistance Remark Red, ellow 43±0Ω Low Blue, Red 58±0Ω High Abnormal, O Ω open or short Stepping Motor Measure resistance between red wire and each terminal. (UP/DOW swing motor) ormal Abnormal Approx. 380Ω at ambient temperature (20 C ~30 C), O Ω open or short 5-8

42 MEMO 5-9

43 6. Exploded Views and Parts List 6- Indoor Unit ou can search for the updated part code number through the ITSELF. URL : 6-

44 Exploded Views and Parts List Parts List o. CODE O Description Q T MH8ZC(C2)-09 MH9ZC(C2)-07 MH9ZC(C2)-2 MH24ZC(C2)-2 MH26ZC(C2)-07 MH26ZC(C2)-2 DB A GRILLE-AIR ILET 2 DB A GUARD-AIR FILTER DB G ASS-CLEAER FILTER 4 DB A COVERTER-TERMIAL 5 DB A ASS PAEL-FROT 6 DB A SPACER-EVAP LOW 7 DB A SPACER-EVAP UP 8 DB A COVER U-BED 9 DB F ASS-CROSS FA 0 DB60-200A BOLT-SPECIAL DB A MOTOR-FA-I 2 DB A THERMISTOR-WIRE ASS 3 DB E ASS COTROL I 3- DB B ASS PCB MAI 3-2 DB A TERMIAL BLOCK 3-3 DB6-0029A HOLDER-CLAMP I 3-4 DB A ASS DISPLA-SWITCH PCB 4 DB G ASS BACK BOD 5 DB A ASS-HOLDER MOTOR 6 DB6-0065A HOLDER-PIPE 7 DB A COECT WIRE-DISPLA 8 DB A COECT WIRE-PCB 9 DB A PLATE-HAGER 20 DB L ASS TRA DRAI 20- DB E ASS DRAI-HOSE 20-2 DB A BLADE-H 20-3 DB A BLADE-V,A DB B BLADE-V,B DB A SCREE-SAFET WIRE 20-6 DB A ASS-MOTOR STEPPIG DB3-029A MOTOR-STEPPIG 20-7 DB A ASS DISPLA 2 DB6-4025A HOLDER-SESOR 22 DB A SPRIG-SESOR 23 DB96-023H ASS EVAP-UIT DB96-023G ASS EVAP-UIT DB A RUBBER BEARIG 25 DB L ASS REMOCO 6-2

45 6-2 Outdoor Unit 6-2- MH8ZC(C2)X / MH9ZC(C2)X 7 6 5(5-) (-~-7) (4-~4-5)

46 Exploded Views and Parts List Parts List Q T o. CODE O Description Specification MH8ZC(C2)X MH9ZC(C2)X Remark DB C ASS CABI FROT ASS 2 DB A FA-PROPELLER AS+G/F20%,D405, 3 DB3-0000B MOTOR-FA IC-9630SLJ5A 4 DB C BASE-MOTOR SGCC-M,T.2, 5 DB C ASS CABI BACK ASS 5- DB A ISULATIO-CABI-BACK T7,W250,L550 6 DB A ASS-COVER COTROL ASS 7 DB90-202A ASS-BASE OUT ASS - DB A ASS-BASE OUT ASS - 8 DB99-07A ASS-VALVE ASS - DB A ASS-VALVE ASS - 9 DB99-000C ASS VALVE 4WA-A ASS - DB A ASS VALVE 4WA-A ASS - 0 DB C ASS VALVE 4WA-B ASS - DB B ASS VALVE 4WA-B ASS - DB B ASS COTROL OUT ASS DB B ASS COTROL OUT ASS - DB6-099B CASE COTROL-OUT SGCC-M(Z22),T0.8-2 DB6-0200A CASE-PCB OUT PP(UL-94,V0),T C-OIL 30uF,420VAC C-OIL 25uF,450VAC - -5 DB A TERMIAL-BLOCK 8P C-OIL 2.5uF,450V -7 PD-UD8B-00 ASS PCB PARTS ASS 2 DB B ASS-PARTITIO ASS 3 DB C ASS CABI-UPPER ASS 4 44B092JWEL ROTAR COMPRESSOR 44B092JWEL 2-44A070JWEC ROTAR COMPRESSOR 44A070JWEC - 48A24JVEG ROTAR COMPRESSOR 48A24JVEG - 4- DB A GROMMET-ISOLATOR R DB A UT-WASHER M DB A UT-FLAGE M DB63-065D COVER TERMIAL PBT, DB B OLP MRA DB OLP MST24AM DB Z OLP MRA DB96-036B ASS COD-UIT ASS - DB96-036D ASS COD-UIT ASS - 6 DB A COVER-HADLE ABS,T2.0 7 DB A THERMISTOR-OUT ASS 03AT 6-4