Samsung UQ09A2VA Service Manual Download Page 1

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SERVICE

Manual

CONTENTS

AIR CONDITIONER

1. Installation

2. Disassembly and Reassembly

3. Troubleshooting

4. Exploded Views and Parts List

5. Refrigerating Cycle Block Diagrams

6. Wiring Diagrams

7. Schematic Diagrams

ROOM AIR CONDITIONER

INDOOR UNIT

AQ12A2VC
AQ09A2VA

OUTDOOR UNIT

UQ12A2VC
UQ09A2VA

E DB68-00039A(5)

cover 5/14/01 8:53 PM Page 1

Summary of Contents for UQ09A2VA

Page 1: ...y and Reassembly 3 Troubleshooting 4 Exploded Views and Parts List 5 Refrigerating Cycle Block Diagrams 6 Wiring Diagrams 7 Schematic Diagrams ROOM AIR CONDITIONER INDOOR UNIT AQ12A2VC AQ09A2VA OUTDOOR UNIT UQ12A2VC UQ09A2VA E DB68 00039A 5 cover 5 14 01 8 53 PM Page 1 ...

Page 2: ...oo quickly but gradually while operating a pressure valve 5 Check the pressure indicated by the pressure gauge low pressure side Standard pressure is should be 64 78psi in a reqular high operation mode 7 Stop operation of the air conditioner 8 Close the 3 way valve disconnect the pressure gauge and open the 3 way valve again 9 Close the cap of each valve 3 Connect the tank to refill with Refrigera...

Page 3: ... the connection pipes in the middle and store together with the cables 7 Move the indoor and outdoor units to a new locatioon 8 Remove the mounting plate for the indoor unit and move it to a new location Pump down shall be carried out when an evaporator is replaced or when the unit is relocated in another area 1 Remove the caps from the 2 way valve and the 3 way valve 3 Set the unit to cool operat...

Page 4: ...ontract 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 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 As...

Page 5: ...onnector of PCB upper side out 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 TRANS hook it before 1 Do 1 and 2 3 above 2 Loosen two fixing earth screws of right side 3 Separate the connection pipe 4 Separate the bush body at the upper side and holder at the rearside 5 Loosen the two fixing screws of left side 6 Li...

Page 6: ...1 Do 1 2 3 4 above 2 Loosen the fixing three 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 5 1 5 14 01 8 55 PM Page 5 ...

Page 7: ...minal block 3 Loosen four fixing screws and separate the upper cabinet 4 Loosen the two fixing screws of Ass y E part 5 Loosen seven fixing screws and separate the side cabinet 1 Do 1 above 2 Loosen two fixing screw of the front cabinet 3 Push the brackets of the outer cover to sepa rate the protection mesh from the rear side of front cabinet 1 2 1 5 14 01 8 55 PM Page 6 ...

Page 8: ...xing screws of left and right side 3 Disassemble the inlet and outlet pipe by weld ing 4 Separate the heat exchanger 1 Do 1 above 2 Open the terminal cover of compressor and unscrew the connection terminal 3 Disassemble the inlet and outlet pipe of com pressor by welding 4 Disassemble the inlet and outlet pipe of con denser by welding 5 Loosen the three bolts of the lower part 6 separate the compr...

Page 9: ...stops intermittently in a COOL mode or DRY mode and fan speed of the indoor unit decreases It indicates power is on The LED stops blinking if the operation ON 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 minute...

Page 10: ...ndoor fan of the micom normal Is voltage at 32 terminal of the Micom normal 0VDC Is voltage at 64 terminal of the Micom normal 5VDC Is the rating voltage 10 range applied to the primary side of the power transformer Check linkage between power cord and terminal tap Check fuse Is 14 18VAC appear in the secondary side of the power transformer Replace power transformer YES NO YES NO YES YES YES NO YE...

Page 11: ...e power cord should be reconnected within five seconds Does the operating lamp Green blink Does the Solid State Relay SS71 work properly Is the supply voltage of the fan motor sufficient Test rod location PCB CN73 Condition Fan operate AC 180V Normal voltage YES YES YES NO NO NO Check as in the procedur NO power parts Refer tp page 5 2 Microcomputer is out of order PCB is out of order PCB should b...

Page 12: ...n five seconds Does the operating lamp blink YES YES NO NO NO 1 YES 3 2 NO YES 1 NO 2 NO Outdoor unit is out of order Power relay is out of order Power relay should be replaced PCB should be checked Microcomputer is out of order PCB should be checked Room temperature sensor is out of order Check as in the procedure No Power parts Refer to page 5 2 YES 3 Is the room sensor normal register 10 C 20 C...

Page 13: ...5003 is faulty Micom IC04 is faulty Normal Check as in the procedure No Power parts Refer to page 5 2 3 2 5 In the mode When there is no warm air current Check this first 1 Is the set temperature of Remote Control lower than room temperature in Heat mode 2 Is the Indoor PCB properly connected with the CN71 connector After training on the heating operation should start in five minutes Is the munber...

Page 14: ...lty Receiver module is faulty Q601 C4375Y or Q602 C1623Y is faulty IR LED CL 1L5EU is faulty sound heard from the indoor unit when ON OFF button on the remote control unit pushed Voltage of battery less than 2 5V Remote Control Unit LCD display status of REMOCON normal Voltage at PIN 30 of Remocon Micom change Voltage at collecter of Q601 or Q602 change Voltage at pin 26 of micom IC04 change INDOO...

Page 15: ...14 4 Exploded Views and Parts List 4 1 Indoor Unit 1 1 2 4 5 7 2 22 6 1 1 5 1 9 2 1 1 2 1 1 1 4 1 6 1 0 6 2 6 7 8 1 3 9 1 7 1 3 1 7 1 8 2 0 1 5 14 01 8 55 PM Page 14 ...

Page 16: ...NLET PANEL CENTER DISPLAY GUARD AIR FILTER ASS Y FILTER COVER TERMINAL ASS Y FRONT PANEL ASS Y PCB DISPLAY CASE CENTER PCB COVER DISPLAY ASS Y TRAY DRAIN ASS Y STEP MOTOR U D BLADE H ASS Y EVAP SPACER EVAP ASS Y HOLDER MOTOR MOTOR FAN IN ASS Y C F FAN ASS Y BEARING ASS Y MAIN PCB ASS Y THERMISTOR ASS Y TERMINAL BLOCK CASE CONTROL BODY BUSH ASS Y BACK BODY HOLDER PIPE PLATE HANGER ASS Y REMOCON ABS...

Page 17: ...16 4 2 Outdoor Unit 1 3 6 7 8 8 3 8 4 2 4 5 1 0 9 1 5 1 6 1 7 2 0 2 2 2 1 2 3 1 3 1 4 1 2 8 1 1 1 7 1 8 2 8 6 8 5 24 27 28 29 26 25 24 1 1 8 1 8 1 1 9 1 5 14 01 8 55 PM Page 16 ...

Page 18: ...NSU CABI UPPER ASS Y E PARTS CAPACITOR TERMINAL BLOCK ASS Y SOLENOLD COIL COMP MOTOR WIRE O L P O L P SPRING CLOTH COMP BOTTOM CLOTH COMP SIDE CLOTH COMP SIDE CLOTH COMP UPPER COMPRESSOR GROMMET ISOLATOR NUT WASHER GASKET COVER TERMINAL NUT FLANGE ASS Y 4 WAY VALVE 4 WAY VALVE ASS Y CHECK VALVE ASS Y COND INSU CABI SIDE ASS Y CABI SIDE ASS Y COVER E PARTS ASS Y CABLE BOX POWER CABLE FLARE NUT DRAI...

Page 19: ...001095 DB93 10560B DB32 10008D Description CASE CONTROL Ass y main PCB Ass y main PCB Trans power Trans power C film C film Power relay Fuse Fuse Ass y display and Remocon Module Thermistor EVAP Specification AC230V DC17V 300mA AC125V DC17V 300mA CFS 99N 450VAC 155K 300VAC 4µF DI1U DC12V 250V 3 15A T 125V 3 15A 103AT 240 240 Q TY AQ09A2VA AQ12A2VC 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Remark 1 5 14 01 8...

Page 20: ...e Check valve Compressor 4 way valve T1 T2 STD Pressure Piping Temp F Use Temp Condition F Operating Condition psi T1 T2 Indoor Outdoor 3 WAY V V DB WB DB WB Standard 64 78 50 54 50 54 80 67 95 75 Cooling Max over load 61 64 61 64 80 67 115 75 Low temp 34 39 34 39 67 57 67 57 Standard 242 284 90 97 140 158 70 60 47 43 Heating Max over load 97 104 149 167 80 75 65 Deice 82 90 104 113 70 60 35 33 5 ...

Page 21: ...20 6 Wiring Diagrams 6 1 Indoor Unit AQ09A2VA AQ07A2VA AQ12A2VC 1 5 14 01 8 55 PM Page 20 ...

Page 22: ...21 6 2 Outdoor Unit 1 5 14 01 8 56 PM Page 21 ...

Page 23: ...23 22 7 Schematic Diagrams 7 1 Indoor Unit AQ12A2VC ...

Page 24: ...25 24 AQ09A2VA ...

Page 25: ...ELECTRONICS cover 5 14 01 8 53 PM Page 2 ...

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Samsung UQ09A2VA, Service Manual

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