Samsung AQ12?5(6)MB Service Manual Download Page 33

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Troubleshooting

Samsung Electronics

5-6

5-2-6 If Operation By Remote Control Unit Is Impossible. (Initial Diagnosis)

1) Troubleshooting

procedure

Remove power cord and plug in again approx. 5 Seconds

Is operation lamp blinking?

Check as in the procedure “NO Power

parts”. Refer to page 5-2.

Normal

Replace battery.

LCD is faulty.

Replace button.

Micom is faulty.

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 (INDOOR UNIT)?

Micom (IC04) is faulty.

Transmission display lamp ( ) blinking when

ON/OFF button on the remote control unit pushed?

YES

DB81-00181A(4)-1 3/6/11 3:24 PM Page 5-6

Summary of Contents for AQ12?5(6)MB

Page 1: ...ROOM AIR CONDITIONER INDOOR UNIT AQ12 5 6 MB AQ12 5 6 ME AQ09 5 6 ME SH09Z 5 6 AQ07 5 6 ME SH07Z 5 6 AQ09 7 8 ME SH09Z 7 8 AQ07 7 8 ME SH07Z 7 8 AQ12 9 0 ME SH12Z 9 0 AQ12 A B ME AQ09 5 6 MED AQ07 5...

Page 2: ...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 me...

Page 3: ...16A 790 x 245 x 165 762 x 532 x 280 31 1 x 9 6 x 6 5 30 x 20 9 x 11 7 7 35 6 35 x 5 12 7 x 5 18 x 2000 Rotary Cross flow Propeller Resin steel 15 25 2ROW 12STEP 1ROW 20STEP CAPILLARY TUBE 410 800 MRA...

Page 4: ...PILLARY TUBE 360 600 MRA 12110 12008 RAC12054 9622 AQ07 7 8 ME SH07Z 7 8 Indoor unit Outdoor unit Wall mounting 7500 2 2 8000 2 34 0 9 5 6 20 5 5 5 20 5 35 50 35 50 10 0 10 96 1 220 240 50 750 730 3 3...

Page 5: ...V 10 16A 790 x 245 x 165 740 x 530 x 230 31 1 x 9 6 x 6 5 29 1 x 20 6 x 9 1 7 7 35 0 6 35 x 5 12 7 x 5 18 x 2000 Rotary Cross flow Propeller Resin steel 15 25 2ROW 12STEP 1ROW 24STEP CAPILLARY TUBE 41...

Page 6: ...2 4 Samsung Electronics 2 2 Dimensions 2 2 1 Indoor Unit 790 165 245 Air in Front view Remote Control Rear view Air out Installation plate 22 45 115...

Page 7: ...497 492 660 235 50 11 20 UQ09 5 6 M UQ07 5 6 M SH09Z 5 6 X SH07Z 5 6 X UQ09 5 6 M D UQ07 5 6 M D SH09Z 5 6 DX SH07Z 5 6 DX 457 254 242 660 457 11 20 SH07Z 7 8 X SH09Z 7 8 X UQ07 7 8 M UQ09 7 8 M UQ12...

Page 8: ...Product Specifications 2 6 Samsung Electronics 230 506 740 57 20 11 UQ12 A B ME SH12Z A B X UQ12 9 0 M SH12Z 9 0 X 532 267 245 496 720 55 11 20...

Page 9: ...0 30 6 22 5 28 8 21 0 27 0 19 0 24 0 17 0 21 5 15 0 6 5 5 5 4 5 3 5 12K BTU 20 25 30 35 40 45 32 4 24 0 30 6 22 5 28 8 21 0 27 0 19 0 24 0 17 0 21 5 15 0 6 5 5 5 4 5 3 5 9K BTU 20 25 30 35 40 45 32 4...

Page 10: ...y in remote controller DOWN Power On Off button to start and stop airconditioner or timer set up Press until the appearance the air condition cools or heats the room as quickly as possible after 30min...

Page 11: ...m temperature The unit operates in DRY mode Compressor ON OFF Time is controlled compulsorily can not set up the fan speed always breeze Protective function Low temperature release Prevention against...

Page 12: ...er ation designed in advance 9 SWING BLADE H is rotated vertically by the stepping motor Swing Set Press the button under the remote control is displayed on LCD the and the blades move up and down If...

Page 13: ...MEMO Samsung Electronics 3 4...

Page 14: ...r 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 separate the terminal cove...

Page 15: ...he terminal block 4 If pulling the Main PCB up it will be taken out 1 Do 1 2 above Separate the drain hose from the extension drain hose 2 Pull tray drain out from the back body 1 Do 1 and 2 3 above 2...

Page 16: ...edure Remark 5 Fan Motor and Cross Fan 1 Do 1 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 mot...

Page 17: ...Common Work 1 Loosen the fixing screw and separate the Handle Cabi RH 2 Separate the connection wire from the terminal block 3 Loosen 6 fixing screws and separate the upper cabinet 4 Loosen the fixin...

Page 18: ...Electronics No Parts Procedure Remark 2 Fan Motor 1 Loosen 4 fixing screw of the Guard Fan 2 Remove the nut flange Turn to the right to remove as it is a left hand screw 3 Separate the fan 4 Loosen fo...

Page 19: ...arate the connection wire from the terminal block 3 Loosen five fixing screws and separate the cabi Upper 4 Loosen two fixing screws of Ass y E part 5 Loosen nine fixing screws and separate the cabi s...

Page 20: ...rate the motor 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 above 2 Loosen the nut on the te...

Page 21: ...k 1 Loosen the fixing tow screws and separate the COVER TERMINAL 2 Loosen the fixing two screws and seperate the cover control 3 Separate the connection wire from the terminal block 4 Loosen six fixin...

Page 22: ...separate the motor 5 Loosen two 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...

Page 23: ...nd separate the cover E parts 2 Separate the connection wire from the terminal block 3 Loosen five fixing screws and separate the cabi Upper 4 Loosen two fixing screws of Ass y E part 5 Loosen seven f...

Page 24: ...arate the motor 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 above 2 Loosen the nut on the t...

Page 25: ...the fixing one screws 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 an...

Page 26: ...separate the motor 5 Loosen 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...

Page 27: ...MEMO Samsung Electronics 4 14...

Page 28: ...or 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...

Page 29: ...ltage at 10 terminal of the Micom 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...

Page 30: ...e After unplugging 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 suffi...

Page 31: ...conds Does the STD 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 PC...

Page 32: ...lty Micom IC04 is faulty Normal Check as in the procedure No Power parts Refer to page 5 2 5 2 5 In the mode When there is no warm air current Check this first 1 Is the set temperature of Remote Contr...

Page 33: ...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...

Page 34: ...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...

Page 35: ...oltage at BD71 rating voltage 10 range 2 DC voltage at BD71 about 325 v 10 3 DC voltage at IC02 IN GND DC12 v OUT GND DC5 v 4 Voltage waveform at Q201 collector GND squarewave Voltage check 1 check vo...

Page 36: ...gnal wire of the fan motor Normal Abnormal Abnormal if voltage does not change from 0V to 5V Normal At ambient temperature 10 C 30 C Abnormal O open or short Measure resistance between red wire and ea...

Page 37: ...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 pro...

Page 38: ...ep 4 Pressing the 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 f...

Page 39: ...D AQ07 6ME AQ07 6MED SH07Z 6 SH07Z 6D AQ09 7ME SH09Z 7 AQ09 8ME SH09Z 8 AQ07 7ME SH07Z 7 AQ07 8ME SH07Z 8 AQ12 9ME SH12Z 9 AQ12 0ME SH12Z 0 AQ12 A B ME SH12Z A B X OPTION CODE 017725 17021d 007725 170...

Page 40: ...17 16 14 22 9 7 21 3 4 5 6 19 22 8 12 24 13 4 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 23 20 Samsung Electronics 6 1 You can search for the updated part code number throu...

Page 41: ...RD AIR FILTER FILTER CLEANER ASS Y COVER TEMINAL ASS Y PANEL ASS Y PANEL SPACER EVAP LOW SPACER EVAP UP COVER U BEND ASS Y FAN CROSS SF BOLT SPECIAL MOTOR FAN IN THERMISTOR WIRE ASS Y ASS Y CONTROL IN...

Page 42: ...40003A DB94 40007A DB93 00251L GRILLE AIR INLET GRILLE AIR INLET GUARD AIR FILTER FILTER CLEANER ASS Y COVER TEMINAL ASS Y PANEL ASS Y PANEL SPACER EVAP LOW SPACER EVAP UP COVER U BEND ASS Y FAN CROSS...

Page 43: ...Samsung Electronics 6 4 6 2 Outdoor Unit UQ12 5 6 MB E 1 9 2 0 1 8 1 7 7 8 6 8 1 8 2 8 3 8 7 8 4 1 3 2 4 5 9 1 2 1 1 1 3 2 1 8 6 1 6 1 5 8 5 1 4 1 0...

Page 44: ...CITOR MOTOR TERMINAL BLOCK ASS Y LEAD WIRE O L P O L P O L P SPRING ASS Y SOLENOIDE CLOTH COMP BOTTOM ASS Y 4WAY VALVE COMPRESSOR COMPRESSOR GROMMET ISOLATOR NUT WASHER GASKET COVER TERMINAL NUT FLANG...

Page 45: ...onics 6 6 Outdoor Unit 1 2 3 4 12 18 1 8 4 17 17 1 22 20 21 19 18 2 18 10 16 14 11 15 13 5 8 2 8 3 8 8 1 8 5 6 7 9 UQ07 5 6 ME UQ07 5 6 MED SH07Z 5 6 X SH07Z 5 6 DX UQ09 5 6 ME UQ09 5 6 MED SH09Z 5 6...

Page 46: ...18 1 18 2 19 20 21 22 DB63 00086B DB60 30004A DB67 00036A DB31 10058C DB90 00264A DB94 00078A DB94 00141A DB90 00077B DB90 00077D DB93 00478B DB93 00478A DB93 00478L 2501 001228 2501 001229 2301 00137...

Page 47: ...Electronics 6 8 Outdoor Unit 1 4 2 1 4 1 4 1 1 1 3 1 1 4 1 1 2 1 1 1 2 1 3 6 1 3 1 4 5 4 4 4 3 4 2 4 1 1 3 3 1 3 5 1 3 4 1 3 2 4 5 3 7 1 7 1 8 1 2 1 5 1 6 1 0 9 SH07Z 7 8 X UQ07 7 8 ME SH09Z 7 8 X UQ0...

Page 48: ...10 12008 Single OLP PROTECTOR O L RAC12086 12008 2 Stage OLP MRA12086 12008 Single OLP GASKET EPDM COVER TERMINAL NUT FLANGE NUT WASHER CLOTH COMP SIDE BRAKET VALVE CONDENSER ASS Y ASS Y 4WAY VALVE SO...

Page 49: ...Samsung Electronics 6 10 1 2 3 4 5 5 1 1 2 1 6 1 0 1 7 1 1 7 1 7 2 1 4 1 1 1 5 1 3 9 6 7 2 1 2 0 2 2 1 9 8 8 5 8 3 8 1 8 4 1 8 1 8 1 1 8 2 8 2 Outdoor Unit UQ12 9 A0 ME SH12Z 9 A0 X...

Page 50: ...8 5 9 10 11 12 13 14 15 16 17 17 1 17 2 18 18 1 18 2 19 20 21 22 DB63 00071A DB60 30004A DB67 50063A DB31 10058C DB90 00372A DB72 00194J DB94 00098A DB90 00374A DB93 00478C DB93 00453A 2501 001236 DB...

Page 51: ...Samsung Electronics 6 12 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 9 1 9 2 9 3 9 7 1 7 Outdoor Unit UQ12 A B ME SH12Z A B X...

Page 52: ...T 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 SOLENOIDE ASS Y 4WAY VALVE COMPRESSOR GROMMET ISOLATOR NUT WASHE...

Page 53: ...tronics 6 14 6 3 Remote Control PCB Box Parts List No 1 2 3 4 5 6 7 Description INLAY LCD CASE TOP LCD KEY RUBBER ASS Y PCB REMOCON CASE LOW BATTERY COVER Q TY 1 1 1 1 1 1 1 Remark 6 3 1 ASS Y REMOCON...

Page 54: ...ER CONTROL ASS Y MAIN PCB ASS Y TERMINAL BLOCK ASS Y DISPLAY PCB CONNECTOR WIRE PCB U D HOLDER WIRE CLAMP SCREW SCREW HOLDER CLAMP IN SEAL PANEL FRONT RH SEAL H CONTROL FRONT Specification ABS ASS Y 6...

Page 55: ...MEMO Samsung Electronics 6 16...

Page 56: ...s 7 Block Diagrams 7 1 Refrigerating Cycle Block Diagram Note Note The check valve is applied only to UQ12 5 6 ME B SH12Z 5 6 X as below UQ12 9 0 ME B SH12Z 9 0 X UQ12 A B ME B SH12Z A B X UQ12 5 6 MB...

Page 57: ...MEMO Samsung Electronics 7 2...

Page 58: ...8 1 Samsung Electronics 8 PCB Diagrams 8 1 ASS Y MAIN PCB DB93 00437A TOP PATTERN...

Page 59: ...D101 CD11 VA71 X301 ST11 FT71 L101 RY71 BZ61 F701 F701 F702 CN72 CN71 CN91 CN61 CN42 CN41 CR71 C104 C601 C107 C101 C109 C103 XC71 C102 C105 C106 C108 C201 C202 C301 C402 C403 C501 C502 C503 C504 C901...

Page 60: ...8 3 Samsung Electronics PCB Diagrams BOTTOM PATTERN...

Page 61: ...Samsung Electronics 8 4 8 2 ASS Y MAIN PCB DB93 01017A TOP PATTERN...

Page 62: ...C02 D101 CD11 VA71 X301 ST11 FT71 L101 RY71 BZ61 F701 F701 F702 CN72 CN71 CN91 CN61 CN42 CN41 CR71 C104 C601 C107 C101 C109 C103 C102 C105 C106 C108 C201 C202 C301 C402 C403 C501 C502 C503 C504 C901 C...

Page 63: ...PCB Diagrams Samsung Electronics 8 6 BOTTOM PATTERN...

Page 64: ...REMOCON DIODE SWITCHING R CARBON CONNECTOR WIRE TACT SWITCH C CERAMIC C CERAMIC JUMP COVER DISPLAY UP Specification 64 5x53 SO5511 SY5511 KSM 713TH5 IN4148 470 1 2W 5 SMAW200 10P KPT 1105A 104Z 102K...

Page 65: ...MEMO Samsung Electronics 8 8...

Page 66: ...9 1 Samsung Electronics 9 Wiring Diagrams 9 1 Indoor Unit...

Page 67: ...ng Electronics 9 2 9 2 Outdoor Unit DIAGRAM OUTDOOR UQ 5 6 UQ 09 0 SH Z X C1 MOTOR CAPACITOR C2 COMP CAPACITOR DB68 01624A DIAGRAM OUTDOOR UQ 7 8 SH Z 7 8 X C1 MOTOR CAPACITOR C2 COMP CAPACITOR DB68 0...

Page 68: ...MEMO 9 3 Samsung Electronics...

Page 69: ...Samsung Electronics Samsung Electronics 10 2 10 1 10 Schematic Diagrams 10 1 Indoor Unit...

Page 70: ...MEMO Samsung Electronics 10 3...

Page 71: ...u need more information please see the service website Itself Solution Integrated technology supporting electronic library http itself sec samsung co kr Copyright 2002 By Samsung Electronics Co Ltd Al...

Page 72: ...ELECTRONICS Samsung Electronics Co Ltd Mar 2002 Printed in Korea Code No DB81 00181A 4...

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