Samsung UQ12AABMC 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

AQ12AA(B)MC

OUTDOOR UNIT

UQ12AA(B)MC

E DB98-05496A(1)

DB98-05496A(1)-CO 3/21/02 4:33 PM Page 1

Summary of Contents for UQ12AABMC

Page 1: ...llation 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 AQ12AA B MC OUTDOOR UNIT UQ12AA B MC E DB98 05496A 1 ...

Page 2: ...rigerant in too 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 regular 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 w...

Page 3: ... 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 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...

Page 4: ...t 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 sepa rate 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 Assembl...

Page 5: ...on drain hose 2 Pull tray drain out from the back body 1 Do 1 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 1 Do 1 2 3 4 above 2 Loosen the fixing two screws ...

Page 6: ...and separate the COVER TERMINAL 2 Loosen the fixing one screws and seperate the cover control 3 Separate the connection wire from the terminal block 4 Loosen 13 fixing screws and separate the cabi front 5 Loosen the one fixing screw of Ass y E part 6 Loosen 4 fixing screws and separate the cabi side 1 ...

Page 7: ...sen five fixing screws and seperate the motor bracket from the base 1 Do 1 2 above 2 Loosen two fixing screws of left and right side 3 Disassemble the inlet and outlet pipe by welding 4 Separate the heat exchanger 1 Do 1 2 3 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 Loosen the three bolts of...

Page 8: ...termittently 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 reop erated The same phenomenon occurs when a power is on As a phenomenon that the compressor is reoperated after a delay of 3 minutes the i...

Page 9: ...terminal of the Micom normal 0VDC Is voltage at 9 terminal of the Micom normal 5VD Is rating voltage 10 range applied to the primary side of the BD71 Check linkage between power cord and terminal tap Check fuse Is 325VDC appear in the secondary side of BD71 Replace SMPS PARTS YES NO YES NO YES YES YES NO YES YES YES DC5V 10ms 10ms 250ns NO NO OK YES YES YES YES NO NO YES Normal Refer to remote con...

Page 10: ...g out the power cord should be reconnected within five seconds Does the STD lamp Green blink Does the Solid State Relay SS71 work properly Is the supply voltage of the fan motor sufficient Test rod location PCB CN72 Condition Fan operate about AC 180V Normal voltage pin 3 and 5 YES YES YES NO NO NO Check as in the procedure NO power parts Refer tp page 8 Microcomputer is out of order PCB is out of...

Page 11: ... lamp blink YES YES NO NO NO NO YES YES 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 8 Is the room sensor normal register 10 C 20 C 30 C 17 96kΩ 12 09kΩ 8 3kΩ Does the timer lamp blink dur...

Page 12: ...he remote control unit pushed Voltage at pin 58 61 of micom ICO4 change Squarewave Volatge at pin 13 16 of IC06 ULN2003AFW change Squarewave UP DOWN louver motor is faulty Driver IC06 ULN2003AFW is faulty Micom IC04 is faulty Normal Check as in the procedure No Power parts Refer to page 8 After training on the heating operation should start in five minutes Is the number 36 of Micom IC04 DC 5 0 V I...

Page 13: ...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 INDOOR UNIT Micom IC04 is faulty Tr...

Page 14: ...Method for Setting up the model option with remocon Note In case the wrong letter has been selected continue to press the button until the correct letter appears 1st If the first stage number appears on the display proceed to the second stage 2nd Every time the and button and each continue to appear 3rd Whenever pressing the 1 2 button the number increase from 0 9 0123456789 and A b C d E F each t...

Page 15: ...ON OFF button When pressing the operation ON 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 ON OFF button Step 5 Unit operation test run First Remove the battery from the remote controller...

Page 16: ...15 Table of the option code MODEL AQ12AAMC AQ12ABMC OPTION CODE 017227 170340 007227 170340 ...

Page 17: ...16 4 Exploded Views and Parts List 4 1 Indoor Unit 17 16 14 22 9 7 21 3 4 5 6 19 20 8 12 25 13 4 23 13 3 13 2 13 13 1 11 10 2 1 15 18 1 18 5 18 4 18 18 6 18 6 1 18 2 18 3 24 ...

Page 18: ...B67 60030A DB96 01443A DB94 40003A DB93 00861B DB70 00114A DB63 00226A GRILLE AIR INLET GUARD AIR FILTER FILTER CLEANER ASS Y COVER TEMINAL ASS Y PANEL SPACER EVAP LOW SPACER EVAP UP COVER U BEND ASS Y FAN CROSS BOLT SPECIAL MOTOR FAN IN THERMISTOR WIRE ASS Y ASS Y CONTROL IN ASS Y PCB MAIN TERMINAL BLOCK ASS Y ASS Y PCB DISPLAY C CERAMIC MLC AXIAL MODULE REMOCON CONNECT WIRE PCB ASS Y BACK BODY R...

Page 19: ...18 4 2 Outdoor Unit 1 9 1 8 4 2 1 8 3 9 6 1 1 1 3 1 2 1 6 1 5 9 5 1 4 2 1 1 0 5 7 6 2 0 9 4 9 8 9 9 1 9 2 9 3 9 7 1 7 UQ12AA B MC ...

Page 20: ... MOTOR FAN OUT ASS Y CABI FRONT ASS Y BASE OUT BRAKET VALVE ASS Y PARTITION ASS Y CONTROL OUT CAPACITOR COMP CAPACITOR MOTOR TERMINAL BLOCK ASS Y LEAD WIRE O L P O L P SPRING ASS Y SOLENOID THERMISTOR ASS Y ASS Y 4WAY VALVE COMPRESSOR GROMMET ISOLATOR NUT WASHER GASKET COVER TERMINAL NUT FLANGE ASS Y CHECK V V ASS Y COND CABINET SIDE HANDLE CABI RH BRACKET MOTOR HSER CD 2 0 2C SM20C M6 NTR AS G F ...

Page 21: ...PCB ASS Y TERMINAL BLOCK ASS Y DISPLAY PCB CONNECTOR WIRE PCB U D SCREW HOLDER WIRE CLAMP SEAL PANEL FRONT RH SEAL H CONTROL FRONT LABEL ASS Y THERMISTOR Specification ABS DB93 01017A DB65 00030A DB93 00268A PH M3 x 20 103AT DB32 00020A Remark 20 4 3 ASS Y CONTROL IN DB93 00459C ...

Page 22: ... fan Heating 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 70 74 48 53 48 53 80 67 95 75 Cooling Max over load 60 64 60 64 80 67 115 75 Low temp 34 39 34 39 67 57 67 57 Standard 248 287 99 110 134 155 70 60 47 43 Heating Max over load 100 109 140 160 80 75 65 Deice 85 95 107 120 70 60 35 33 5...

Page 23: ...22 6 Wiring Diagrams 6 1 Indoor Unit ...

Page 24: ...23 6 2 Outdoor Unit UQ12AA B MC DIAGRAM OUTDOOR C1 4µF x 450VAC C2 35µF x 450VAC ...

Page 25: ...24 ...

Page 26: ...ELECTRONICS Printed in Korea ...

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