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Samsung AS07A5MA Service Manual
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Samsung AS07A5MA Service Manual

Samsung AS07A5MA Service Manual

Split type air conditioner
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See also: Installation Instructions & Owner's Manual
E DB98-15774A(1)
SERVICE
SPLIT TYPE AIR CONDITIONER
Indoor Unit
AS07A5(6)MA
AS09A5(6)MAF
AS12AA(B)MCF
Manual
Outdoor Unit
US07A5(6)MA
US09A5(6)MAF
US12AA(B)MCF

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Summary of Contents for Samsung AS07A5MA

  • Page 1 SERVICE Manual SPLIT TYPE AIR CONDITIONER Indoor Unit Outdoor Unit AS07A5(6)MA US07A5(6)MA AS09A5(6)MAF US09A5(6)MAF AS12AA(B)MCF US12AA(B)MCF E DB98-15774A(1)

  • Page 3: Safety Precautions

    Safety Precautions The following safety precautions must be taken when using your air conditioner. Risk of electric shock. • Can cause injury or death. • Disconnect all remote electric WARNING power supplies before servicing, installing or cleaning. • This must be done by the manufacturer or its service agent or a similar qualified person in order to avoid a hazard.

  • Page 4: Table Of Contents

    Contents Ι Ι ISASSEMBLE AND EASSEMBLE 1. Indoor unit 2. Outdoor unit Ι Ι Ι Ι ET UP THE OPTION CODE Ι Ι Ι Ι Ι Ι ROUBLESHOOTING 1. Items to be checked first 2. Abnormal diagnosis by symptom Ι Ι Λ Λ ’...

  • Page 5: Ι Ι

    Ι Ι Disassemble and reassemble Stop operation of the air conditioner and remove the power cable before repairing the unit. 1 Indoor unit If you disassemble the heat exchanger, you must pump down at first. Part Procedure Remark Front Panel 1) Stop the operation of the air conditioner and block the main power.
  • Page 6 Procedure Remark Part Electrical 1) Take all the connector of PCB Parts on the upper part. (Included Power cord) (Main PCB) 2) Separate the outdoor unit connection wire from the terminal block. 3) If you pull out the main PCB up, it will be taken out.

  • Page 7: Outdoor Unit

    Ι Ι Disassemble and reassemble (cont’d) 2 Outdoor unit US07A5(6)MA/US09A5(6)MAF Part Procedure Remark Common Work 1) Loosen screws and separate the cover E-part. 2) Separate the connection wire from the terminal block. 3) Loosen five screws and separate the upper cabinet. 4) Loosen the screw of the control box.
  • Page 8 Part Procedure Remark 2) Remove the nut flange (Turn to the clockwise). 3) Separate the fan. 4) Loosen four screws to separate the motor. Heat 1) Release the refrigerant. Exchanger 2) Loosen two screws of left and right side. 3) Disassemble the inlet and outlet pipe by welding.
  • Page 9 Ι Ι Disassemble and reassemble (cont’d) US12AA(B)MCF Part Procedure Remark Common Work 1) Loosen a screw and separate the cover E-part. 2) Separate the connection wire from the terminal block. 3) Loosen thirteen screws and separate the front cabinet. 4) Loosen a screw of the control box. 5) Loosen four screws and separate the side cabinet.
  • Page 10 Part Procedure Remark Fan and Motor 1) Remove the nut flange (Turn to the clockwise). 2) Separate the fan. 3) Loosen four screws to separate the motor. 4) Loosen five screws and separate the motor bracket from the base. Heat Exchanger 1) Release the refrigerant.

  • Page 11: Set Up The Option Code

    Ι Ι Ι Ι Set up the option code The method for setting up the model option with the remote control It is necessary to set up option codes after replacing the main PCB with service parts. Make sure that you can set up option codes of the remote control after replacing the main PBA. Otherwise, the unit won’t be working properly and all LED lamps on display will be flickering.
  • Page 12 7) If the first number is , it is correct. Otherwise, press the button until appears. 8) When pressing the button on the display, select one of them. 9) When pressing the button on the display, select one of them. 10) When pressing the button on the display, select one of them.
  • Page 13 Ι Ι Ι Ι Set up the option code (cont’d) A table of the option code Model Option code AS07A5MA 010000-1700b7 AS07A6MA 000000-1700b7 AS09A5MAF 010000-1700Fb AS09A6MAF 000000-1700Fb AS12AAMCF 010000-170340 AS12ABMCF 000000-170340...

  • Page 14: Troubleshooting

    Ι Ι Ι Ι Ι Ι Troubleshooting 1 Items to be checked first 1) The input voltage should be voltage rating within ±10% range. The air conditioner may not operate properly if the voltage is out of this range. 2) Is the connection cable linking the indoor unit and the outdoor unit properly? The indoor unit and the outdoor unit shall be linked by five cables.

  • Page 15: Abnormal Diagnosis By Symptom

    Ι Ι Ι Ι Ι Ι Troubleshooting (cont’d) 2 Abnormal diagnosis by symptom 1. No Power - Initial diagnosis 1. No Power - Initial diagnosis 1) Checklist : (1) Is input voltage normal? (2) Is AC power linked correctly? (3) Is output voltage of DC regulator IC KA78L05 (IC02) normal? (4.5VDC-5.5VDC) 2) Troubleshooting procedure Remove the power cord and plug in again in approx.
  • Page 16 1-1 No Power-Initial diagnosis in case of the Outdoor Unit PCB of US12AA(B)MCF 1) Checklist : (1) Is AC voltage between “L1” and “1” of outdoor terminal block is normal? (Input voltage within ±10% range) If the Output is not checked, check “L1” and “1” of Indoor Terminal Block. (2) Are connectors linked correctly to the outdoor PCB? (CN71, CN76, CN72, CN11) 2) Troubleshooting procedure...
  • Page 17 Ι Ι Ι Ι Ι Ι Troubleshooting (cont’d) 2. When the Indoor Unit Fan Does Not Operate - Initial Diagnosis 2. When the Indoor Unit Fan Does Not Operate - Initial Diagnosis 1) Checklist : (1) Is the indoor unit fan motor properly connected with the connector (CN72)? (2) Is the AC voltage correct? (3) Is HALL IC in the indoor fan motor properly connected with the connector (CN42)? (4) Is the running capacitor (CR71) properly connected with PCB board?
  • Page 18 3. When the Outdoor Unit Does Not Operate - Initial Diagnosis 3. When the Outdoor Unit Does Not Operate - Initial Diagnosis 3-1 US07A5(6)MA / US09A5(6)MAF 1) Checklist : (1) Is input voltage normal? (2) Is the set temperature of the remote control higher than room temperature in the Cool mode? (3) Is the POWER IN connector (CN71) linked correctly? (4) Is the outdoor unit properly connected with the terminal block connector? 2) Troubleshooting procedure...
  • Page 19 Ι Ι Ι Ι Ι Ι Troubleshooting (cont’d) 3-2 US12AA(B)MCF 1) Checklist : (1) Is LED 01(GRN) on? (2) Are all connectors linked correctly? 2) Troubleshooting procedure Check the power supply between “L1” and “L2” of the outdoor terminal block Check the indoor PCB again Is voltage rating between “L1”...
  • Page 20 4. When the UP/DOWN Louver Motor Does Not Operate - Initial Diagnosis 4. When the UP/DOWN Louver Motor Does Not Operate - Initial Diagnosis 1) Checklist : (1) Is input voltage normal? (2) Is the UP/DOWN louver motor properly connected with the connector (CN61)? 2) Troubleshooting procedure Remove the power cord and plug it in again in approx.
  • Page 21 Ι Ι Ι Ι Ι Ι Troubleshooting (cont’d) 5. When there is no cool air in the current mode 5. When there is no cool air in the current mode 1) Checklist : (1) Is the set temperature of the remote control lower than room temperature in the Cool mode? (2) Is the Indoor PCB properly connected with the CN71 connector? 2) Troubleshooting procedure After training on, the Cooling starts...
  • Page 22 6. When the remote control does not operate 6. When the remote control does not operate 1) Troubleshooting procedure Remove the power cord and plug it in again approx. five Seconds Does STD lamp blink? Check as the procedure “No Power” Refer to page14 The melody sounds from the indoor unit when you Normal...

  • Page 23: Ι Ι Λ Λ

    Ι Ι Λ Λ Assembly drawing and part’s list 1 Indoor unit 18-6 18-6-1 18-1 18-4 18-5 18-3 18-2 13-4 13-2 13-3 13-1...
  • Page 24 Part’s List Q’TY Code No. Description Remark AS07A5(6)MA AS09A5(6)MAF AS12AA(B)MCF DB64-00085A GRILLE-AIR INLET DB63-00064B GUARD-AIR FILTER DB95-00287K FILTER CLEANER ASS´Y DB63-00067A COVER TERMINAL DB92-00031L ASS´Y PANEL-FRONT DB67-00051A SPACER EVAP LOW DB67-00032A SPACER EVAP UP DB63-00083A COVER U BEND DB94-00020D ASS´Y CROSS FAN DB60-20011A BOLT SPECIAL DB31-00071A...

  • Page 25: Outdoor Unit

    Ι Ι Λ Λ Assembly drawing and part’s list (cont’d) 2 Outdoor unit US07A5(6)MA/US09A5(6)MAF...
  • Page 26 Part’s List Q’TY Code No. Description Specification US07A5(6)MA US09A5(6)MAF DB63-00086B GUARD-FAN HSWR, IP2, 5&3, SC-90073T,375FAN DB60-30004A NUT-FLANGE 2C, M6, SM20C, NTR DB67-00036A FAN-PROPELLER AS+G/F20%, PI 375, BLK DB31-10058G MOTOR-FAN OUT ASS020ZREA, FAN OUT,115V/60Hz DB90-00264G ASS´Y FRAME (PAINT) ASS’Y DB94-00078A ASS´Y PARTITION ASS´Y 620mm COND DB90-00077B ASS´Y CABI-UPPER...
  • Page 27 Ι Ι Λ Λ Assembly drawing and part’s list (cont’d) US12AA(B)MCF...
  • Page 28 Part’s List Code No. Description Specification Remark Q’TY DB63-00385B GUARD FAN HSWR,OD 2.0 DB60-30020A NUT-FLANGE 2C SM20C M6 NTR DB67-50063A FAN-PROPELLER AS+G/F, D405 DB31-00242A MOTOR-FAN OUT 220/240V,60/50HZ DB90-00633N ASS'Y CABI-FRONT ASS'Y DB90-00687D ASS'Y BASE OUT ASS'Y DB61-00887A BRACKET-VALVE SECC-P DB93-02588A ASS'Y CONTROL OUT ASS'Y 2501-001237...

  • Page 29: Assembly Control In

    Ι Ι Λ Λ Assembly drawing and part’s list (cont’d) 3 Assembly control in AS07A5(6)MA/AS09A5(6)MAF/AS12AA(B)MCF Part’s List Code No. Description Remark AS07A5(6)MA / AS09A5(6)MAF AS12AA(B)MCF HOLDER CONTROL DB61-00160B DB61-00160B DB93-01018A ASS’Y MAIN PCB DB93-01018B ASS’Y TERMINAL BLOCK DB65-00079B DB65-00079B ASS’Y DISPLAY PCB DB93-00268A DB93-00268A CONNECTOR WIRE PCB U/D...

  • Page 30: Assembly Control Out

    4 Assembly control out US12AA(B)MCF...
  • Page 31 Ι Ι Λ Λ Assembly drawing and part’s list (cont’d) 4 Assembly control out (cont’d) Part’s List Description Specification Remark PLATE-CONTROL OUT SGCC-M T0.6 C-OIL (CAPACITOR) 35uF/450VAC CLIP-CAPACITOR SGCC-MØ50 SCREW-TAPPING 2S-M4 x L10 C-OIL(CAPACITOR) 1.5uF/450VAC TERMINAL-BLOCK 300V, 20A 5P HOLDER PCB ABS, BLK HOLDER-WIRE NYLON(BLK)

  • Page 32: Λ Λ

    Λ Λ Refrigerating cycle block diagram Indoor unit Outdoor unit Capillary tube 2-way valve Liquid side Heat Heat exchanger exchanger (Evaporator) (Condenser) Gas side 3-way valve Cooling Compressor Gas leak check point Refrigerating cycle temperature and pressure Piping Temp.[°F(°C )] Use Temp.

  • Page 33: Λ Λ Ι Ι

    Λ Λ Ι Ι Performance curve AS07A5(6)MA Data is based on condition of indoor humidity 50%. Air flow should be set at HI. Total power consumption Indoor intake air WB temperature(°F) Outdoor intake air DB temperature(°F) Total capacity Indoor intake air WB temperature(°F) Outdoor intake air DB temperature(°F)
  • Page 34 High pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F) Low pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F)
  • Page 35 Λ Λ Ι Ι Performance curve (cont’d) Suction temperature Indoor DB temperature (°F) Outdoor ambient DB temperature (°F) Discharge temperature Indoor DB temperature(°F) Outdoor ambient DB temperature (°F)
  • Page 36 AS09A5(6)MAF Data is based on condition of indoor humidity 50%. Air flow should be set at HI. Total power consumption Indoor intake air WB temperature(°F) Outdoor intake air DB temperature(°F) Total capacity Indoor intake air WB temperature(°F) Outdoor intake air DB temperature(°F)
  • Page 37 Λ Λ Ι Ι Performance curve (cont’d) High pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F) Low pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F)
  • Page 38 Suction temperature Indoor DB temperature(°F) Outdoor ambient DB temperature (°F) Discharge temperature Indoor DB temperature(°F) Outdoor ambient DB temperature (°F)
  • Page 39 Λ Λ Ι Ι Performance curve (cont’d) AS12AA(B)MCF Changes in the dotted box are caused by the RPM change of outdoor fan. Total power consumption Indoor intake air WB temperature(°F) Outdoor intake air DB temperature(°F) Total capacity Indoor intake air WB temperature(°F) Outdoor intake air DB temperature(°F)
  • Page 40 High pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F) Low pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F)
  • Page 41 Λ Λ Ι Ι Performance curve (cont’d) Suction temperature Indoor DB temperature(°F) Outdoor ambient DB temperature(°F) Discharge temperature Indoor DB temperature(°F) Outdoor ambient DB temperature(°F)

  • Page 42: Λ Λ Ι Ι Ι Ι

    Λ Λ Ι Ι Ι Ι Wiring diagrams 1 Indoor unit AS07A5(6)MA/AS09A5(6)MAF/AS12AA(B)MCF This document can not be used without Samsung’s authorization.

  • Page 43: Outdoor Unit

    Λ Λ Ι Ι Ι Ι Wiring diagrams (cont’d) 2 Outdoor unit US07A5(6)MA/US09A5(6)MAF DIAGRAM This document can not be used without Samsung’s authorization.
  • Page 44 US12AA(B)MCF DIAGRAM Motor capacitor : 1.5µF x 450VAC Comp capacitor : 35µF x 450VAC This document can not be used without Samsung’s authorization.

  • Page 45: Schematic Diagrams

    Λ Λ Ι Ι Ι Ι Ι Ι Schematic diagrams 1 Indoor unit AS07A5(6)MA/AS09A5(6)MAF/AS12AA(B)MCF CR71 Model Input Voltage 4uF/300V AS07A5(6)MA/AS09A5(6)MAF 115V/60Hz 1.2uF/450V AS12AA(B)MCF 208V~230V/60Hz This document can not be used without Samsung’s authorization.

  • Page 46: Outdoor Unit

    2 Outdoor unit US12AA(B)MCF This document can not be used without Samsung’s authorization.
  • Page 47 ELECTRONICS This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable lnternational and/or domestic law.

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