Samsung AS18A0RCF Service Manual
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Samsung AS18A0RCF Service Manual

Samsung AS18A0RCF Service Manual

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AS18A9(0)RCF SM_E_15775
3/10/05 7:16 PM
E DB98-15775A(4)
Page 43
SERVICE
SPLIT TYPE AIR CONDITIONER
Indoor Unit
AS18A9(0)RCF
AS18A9(0)RCFD
AS24A1(2)RC
AS24A1(2)RCD
Manual
Outdoor Unit
US18A9(0)RCF
US18A9(0)RCFD
US24A1(2)RC
US24A1(2)RCD

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  • Page 1 AS18A9(0)RCF SM_E_15775 3/10/05 7:16 PM Page 43 SERVICE Manual SPLIT TYPE AIR CONDITIONER Indoor Unit Outdoor Unit AS18A9(0)RCF US18A9(0)RCF AS18A9(0)RCFD US18A9(0)RCFD AS24A1(2)RC US24A1(2)RC AS24A1(2)RCD US24A1(2)RCD E DB98-15775A(4)

  • Page 2: Safety Precautions

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 2 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 3: Table Of Contents

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 3 Contents Ι Ι ISASSEMBLE AND REASSEMBLE 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.

  • Page 4: Ι Ι

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 4 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...
  • Page 5 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 5 Part Procedure Remark 7) Pull the upper left and right of discharge softly so that the outside cover is pulled out. 8) Pull softly the lower part of discharge and push it up. Caution Assemble the front panel and fix the hooks of left and right.
  • Page 6 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 6 Ι Ι Disassemble and reassemble ( Continued Part Procedure Remark Electrical 1) Take out all the connector of PCB Parts on the upper part. (Main PCB) 2) Separate the outdoor unit connection wire from the terminal block.
  • Page 7 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 7 Procedure Remark Part Fan Motor and 1) Loosen two screws and separate the Cross Fan motor holder. 2) Loosen the screw of fan motor. (By use of M3 wrench) 3) Separate the fan motor from the fan. 4) Separate the fan from the left holder bearing.

  • Page 8: Outdoor Unit

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 8 Ι Ι Disassemble and reassemble (Continued) 2 Outdoor unit I US18A9(0)RCF / US18A9(0)RCFD ❊ The designs and shape are subject to change according to the model. Part Procedure Remark Common Work 1) Loosen the fixing screws and separate the cover control.
  • Page 9 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 9 Part Procedure Remark 8) Loosen the fixing screws and separate the cabinet side. [US18A9(0)RCF] Loosen the fixing screws and separate the cabinet side LF and RH. [US18A9(0)RCFD] Fan and Motor 1) Remove the nut flange (Turn to the clockwise).
  • Page 10 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 10 Ι Ι Disassemble and reassemble (Continued) I US24A1(2)RC / US24A1(2)RCD ❊ The designs and shape are subject to change according to the model. Part Procedure Remark Common Work 1) Loosen the fixing screws and separate the cover control.
  • Page 11 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 11 Part Procedure Remark 7) Loosen the fixing screws and separate the cabinet side. [US24A1(2)RC] Loosen the fixing screws and separate the cabinet side LF and RH. [US24A1(2)RCD] Fan and Motor 1) Loosen the fixing bolt and separate the fan.

  • Page 12: Set Up The Option Code

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 12 Ι Ι Ι Ι Set up the option code The method for setting up the model option with the remote control N 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.
  • Page 13 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 13 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.
  • Page 14 Page 14 Ι Ι Ι Ι Set up the option code ( Continued A table of the option code Model Option code AS18A9RCF / AS18A9RCFD 09000-1A0201 AS18A0RCF / AS18A0RCF D 08000-1A0201 AS24A1RC / AS24A1RC D 09000-1A0340 AS24A2RC / AS24A2RC D 08000-1A0340...

  • Page 15: Troubleshooting

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 15 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 six cables.

  • Page 16: Abnormal Diagnosis By Symptom

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 16 Ι Ι Ι Ι Ι Ι Troubleshooting (Continued) 2 Abnormal diagnosis by symptom 1. No Power - Initial diagnosis 1. No Power - Initial diagnosis 1) Checklist : (1) Is input voltage normal? (voltage rating within ±10% range) (2) Is AC power linked correctly? (3) Are connections between primary side, secondary side of the power transformer and PCB good? (4) Is input voltage of DC regulator IC KA7805 (IC02) normal? (11VDC-12.5VDC)
  • Page 17 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 17 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 (CN73)? (2) Is the AC voltage correct? (3) Is HALL IC in the indoor fan motor properly connected with the connector (CN43)? (4) Is the running capacitor properly connected with PCB board?
  • Page 18 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 18 Ι Ι Ι Ι Ι Ι Troubleshooting (Continued) 3. When the Outdoor Unit Does Not Operate - Initial Diagnosis 3. When the Outdoor Unit Does Not Operate - Initial Diagnosis 1) Checklist : (1) Is input voltage normal? (voltage rating within ±10% range) (2) Is the set temperature of the remote control higher than room temperature in the Cool mode? (3) Is the POWER IN connector (CN78) linked correctly?
  • Page 19 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 19 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? (voltage rating within ±10% range) (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 20 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 20 Ι Ι Ι Ι Ι Ι Troubleshooting (Continued) 5. When the remote control does not operate - lnitial Diagnosis 5. When the remote control does not operate - lnitial Diagnosis 1) Troubleshooting procedure Remove the power cord and plug it in again approx.

  • Page 21: Replace Pcb Module

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 21 3 Replace PCB module Remove the power cord Replace the PCB module Check the connection and plug in Does the display lamp blink or STD lamp blink? Replace another PCB module Refer to ‘set up the option code’...

  • Page 22: Ι Ι Λ Λ

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 22 Ι Ι Λ Λ Assembly drawing and part’s list 1 Indoor unit...
  • Page 23 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 23 Part’s List Q’TY Code No. Description Specification AS18A9(0)RCF AS24A1(2)RC AS18A9(0)RCFD AS24A1(2)RCD DB64-00127A GRILLE AIR INLET HIPS DB63-30150C GUARD AIR FILTER DB95-00287N CLEANER FILTER ASS´Y ASS’Y DB61-10164B CASE-CLEANER FILTER DB63-00436D CARBON FILTER POLYESTER/CARBON DB63-00435D CLEANER FILTER POLYESTER/COTTON DB63-00091A...

  • Page 24: Outdoor Unit

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 24 Ι Ι Λ Λ Assembly drawing and part’s list (Continued) 2 Outdoor unit I US18A9(0)RCF / US18A9(0)RCFD 12-4 12-3 15-2 12-2 15-1 15-3 12-1 15-5 13-1 15-6 15-4 17-1 17-2...
  • Page 25 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 25 Part’s List Q’TY Code No. Description Specification US18A9(0)RCF US18A9(0)RCFD DB90-00353K ASS’Y CABINET-FRONT ASS’Y DB90-01877A ASS’Y CABINET-FRONT ASS’Y DB90-20160H ASS’Y BASE OUT ASS’Y DB90-01753A ASS’Y BASE OUT ASS’Y DB67-50063A FAN-PROPELLER AS+G/F20% DB60-30020A NUT FLANGE M6LF DB31-00056D MOTOR FAN OUT...
  • Page 26 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 26 Ι Ι Λ Λ Assembly drawing and part’s list (Continued) I US24A1(2)RC / US24A1(2)RCD 17-1 17-2...
  • Page 27 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 27 Part’s List Q’TY Code No. Description Specification UQ24A1(2)RC UQ24A1(2)RCD DB90-00652P ASS’Y CABINET-FRONT ASS’Y DB90-01364D ASS’Y CABINET-FRONT ASS’Y DB63-00831A GUARD FAN DB90-20210A ASS’Y BASE OUT ASS’Y DB90-01752D ASS’Y BASE OUT ASS’Y DB67-50074A FAN-PROPELLER AS+G/F20% DB67-00438A FAN-PROPELLER DB60-20020A...

  • Page 28: Pcb Box

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 28 Ι Ι Λ Λ Assembly drawing and part’s list (Continued) 3 PCB Box Part’s List Specification AS18A9(0)RCF / AS18A9(0)RCFD Q’TY Remark Description AS24A1(2)RC / AS24A1(2)RCD ASS’Y MAIN PCB DB93-01985A ASS’Y THERMISTOR 103AT / DKS-103FW ASS’Y PCB DISPLAY ASS’Y CASE CONTROL...

  • Page 29: Λ Λ

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 29 Λ Λ Refrigerating cycle block diagram Refrigerating cycle temperature and pressure STD Pressure Piping Temp.[°F/(°C)] Use Temp. Condition [°F/(°C)] Model Operating Condition Indoor Outdoor (psi) 3-Way Valve 50~54 50~54 Standard 64~78 (10~12) (10~12) (26) (20) (35)

  • Page 30: Λ Λ Ι Ι

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 30 Λ Λ Ι Ι Performance curve Data is based on condition of indoor humidity 50%. Air flow should be set at HI. I AS18A9(0)RCF / AS18A9(0)RCFD Total power consumption Indoor intake air WB temperature(°F) Outdoor intake air DB temperature(°F) Total capacity Indoor intake air WB temperature(°F)
  • Page 31 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 31 High pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F) Low pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F)
  • Page 32 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 32 Λ Λ Ι Ι Performance curve (Continued) Suction temperature Indoor DB temperature (°F) Outdoor ambient DB temperature (°F) Discharge temperature Indoor DB temperature(°F) Outdoor ambient DB temperature (°F)
  • Page 33 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 33 I AS24A1(2)RC / AS24A1(2)RCD 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 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 34 Λ Λ Ι Ι Performance curve (Continued) High pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F) Low pressure Indoor DB temperature(°F) Outdoor ambient DB temperature(°F)
  • Page 35 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 35 Suction temperature Indoor DB temperature(°F) Outdoor ambient DB temperature (°F) Discharge temperature Indoor DB temperature (°F) Outdoor ambient DB temperature (°F)

  • Page 36: Pcb Diagram

    AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 36 Λ Λ Ι Ι Ι Ι PCB diagram 1 Main PCB...
  • Page 37 AS18A9(0)RCF SM_E_15775 3/10/05 7:15 PM Page 37 Part’s List Location No. Description Specification Q’TY C103 C-CERAMIC,DISC 2.2nF,20%,400V,Y5U,TP,12. C702 C-FILM,MPPF 100nF,10%,275V,BK,18x6x12,15 CR71 C-FILM,MPPF 2000nF,+10-5%,450V,BK,38x18x C701 C-FILM,MPEF 220NF,10%,275V,BK,26.5X8.5X1 RY71,72,74 RELAY-MINIATURE 12VDC,200MW,3000MA,1FORM SS71 12Vdc,-,2A,1mS,1mS IC04 IC MICOM S3C8469(SDIP) IC02 IC-VOLT REGU KA7805A,TO-220AB,1A,0/125C, TN11 TRANS 2UEW0.30/2UEW0.45,1.5KV,1KHz,-,7Pi FT71...

  • Page 38: Wiring Diagram

    AS18A9(0)RCF SM_E_15775 3/10/05 7:16 PM Page 38 Λ Λ Ι Ι Ι Ι Ι Ι Wiring diagram 1 Indoor unit I AS18A9(0)RCF/ AS18A9(0)RCFD/AS24A1(2)RC/AS24A1(2)RCD This document can not be used without Samsung’s authorization.

  • Page 39: Outdoor Unit

    TERMINAL BLOCK FUSE(2A, 250V~) FAN MOTOR SPARK KILLER CAPACITOR I US24A1(2)RC / US24A1(2)RCD MARK NAME MARK NAME POWER RELAY TB 1, 2 TERMINAL BLOCK CAPACITOR FAN MOTOR FUSE(2A, 250V~) SPARK KILLER This document can not be used without Samsung’s authorization.

  • Page 40: Schematic Diagram

    AS18A9(0)RCF SM_E_15775 3/10/05 9:36 PM Page 40 Ι Χ Schematic diagram 1 Indoor unit I AS18A9(0)RCF / AS18A9(0)RCFD / AS24A1(2)RC / AS24A1(2)RCD This document can not be used without Samsung’s authorization.
  • Page 41 AS18A9(0)RCF SM_E_15775 3/10/05 7:16 PM Page 41 MEMO...
  • Page 42 AS18A9(0)RCF SM_E_15775 3/10/05 7:16 PM Page 42 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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