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Samsung AS12AAMC, Service Manual

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Samsung AS12AAMC Service Manual Download Page 1

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

AS12AA(B)MC

OUTDOOR UNIT

US12AA(B)MC

E   DB98-05495A(1)

 DB98-05495A(1)-co  3/21/02 4:27 PM  Page 1

Summary of Contents for AS12AAMC

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 AS12AA B MC OUTDOOR UNIT US12AA B MC E DB98 05495A 1 DB98 05495A 1 co 3 21 02 4 27 PM Page 1 ...

Page 2: ... valve again 5 Check the pressure indicated by the pressure gauge low pressure side Standard pressure is should be 64 78kg cm2 in a regular high operation mode 6 Open the refrigerant tank and fill with refrigerant until the rated pressure is reached It is recommended not to pour the refrigerant in too quickly but gradually while operating a pressure valve 8 Close the 3 way valve disconnect the pre...

Page 3: ...ing 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 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 valv...

Page 4: ... 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 Assemble the front panel and ...

Page 5: ...ay 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 and separate the motor ...

Page 6: ...RMINAL 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 5 DB98 05495A 1 1 3 21 02 4 27 PM Page 5 Index ...

Page 7: ...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 weld ing 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 the lower part 5 Sepa...

Page 8: ...er does not operate 6 The compressor 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 reop erated The same phenomenon occurs when a power is on As a phenomenon that the compressor i...

Page 9: ...icom normal 0VDC Is voltage at 9 terminal of the Micom normal 5VDC 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 control unit fault ...

Page 10: ...hould 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 order PCB should be r...

Page 11: ...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 during operation Is the po...

Page 12: ...ds Is STD lamp blinking Does operation start when swing button of the remote control unit pushed Voltage at pin 58 61 of micom ICO4 change Squarewave Volatge at pin 13 16 of IC06 ULN2003A change Squarewave UP DOWN louver motor is faulty Driver IC06 ULN2003A is faulty Micom IC04 is faulty Normal Check as in the procedure No Power parts Refer to page 8 YES YES YES NO NO NO YES YES After training on ...

Page 13: ...Y 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 Transmission display lamp b...

Page 14: ...he 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 time If the first number...

Page 15: ...sing 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 Second Re insert the b...

Page 16: ...15 Table of the option code MODEL AS12AAMC AS12ABMC OPTION CODE 010000 170340 000000 017340 DB98 05495A 1 1 3 21 02 4 28 PM Page 15 Index ...

Page 17: ...oded 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 DB98 05495A 1 2 3 21 02 4 28 PM Page 16 Index ...

Page 18: ... DB94 40003A DB93 00861A 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 RIGHT SIDE ASS Y HOLDER...

Page 19: ...18 4 2 Outdoor Unit 2 0 1 9 4 2 1 9 3 8 6 1 2 1 4 1 3 1 7 1 6 8 5 1 5 5 6 2 2 1 0 1 1 1 8 2 1 7 8 7 8 8 1 8 3 8 4 8 2 US12AA B MC DB98 05495A 1 2 3 21 02 4 28 PM Page 18 Index ...

Page 20: ...Y CONTROL OUT CAPACITOR COMP CAPACITOR MOTOR TERMINAL BLOCK ASS Y LEAD WIRE O L P O L P SPRING ASS Y PARTITION ASS Y SUCTION TUBE DISCHARGE COMPRESSOR GROMMET ISOLATOR NUT WASHER GASKET COVER TERMINAL NUT FLANGE ASS Y CAPILLARY ASS Y COND ASS Y CABI SIDE BRACKET MORTOR HANDLE CABI RH HSER CD 2 0 2C SM20C M6 NTR AS G F ø405 220 240V 60 50HZ ASS Y ASS Y SECC P ASS Y 35µF 450VAC 1 5µF 450VAC 5P DFT 2...

Page 21: ... ASS Y MAIN 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 01018A DB65 00079A DB93 00268A PH M3 x 20 103AT DB32 00020A Remark DB98 05495A 1 2 3 21 02 4 28 PM Page 20 Index ...

Page 22: ...changer Condenser Propeller fan Compressor T1 T2 Cooling Refrigerating cycle temperature and pressure STD Pressure Piping Temp F Use Temp Condition F Operating Condition psi T1 T2 Indoor Outdoor 3 Way Valve DB WB DB WB Standard 71 81 50 54 50 54 80 67 95 75 Cooling Max over load 60 64 60 64 80 67 115 75 Low temp 55 56 34 39 34 39 67 57 67 57 DB98 05495A 1 2 3 21 02 4 28 PM Page 21 Index ...

Page 23: ...22 6 Wiring Diagrams 6 1 Indoor Unit DB98 05495A 1 2 3 21 02 4 28 PM Page 22 Index ...

Page 24: ...23 6 2 Outdoor Unit US12AA B MC DIAGRAM OUTDOOR C1 1 5µF x 450VAC C2 35µF x 450VAC DB98 05495A 1 2 3 21 02 4 28 PM Page 23 Index ...

Page 25: ...7 Schematic Diagrams 7 1 Indoor Unit AS07A5 6 MA AS09A5 6 MA 24 Index ...

Page 26: ...25 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 26 Index ...

Page 27: ...26 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 27 Index ...

Page 28: ...27 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 28 Index ...

Page 29: ...28 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 29 Index ...

Page 30: ...ELECTRONICS Printed in Korea DB98 05495A 1 co 3 21 02 4 27 PM Page 2 Index ...

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