Download
Share
Print this page
Samsung AQ24A2RC Service Manual
  1. Manuals
  2. Brands
  3. Samsung Manuals
  4. Air Conditioner
  5. AQ24A2RC
  6. Service manual
Samsung AQ24A2RC Service Manual

Samsung AQ24A2RC Service Manual

Hide thumbs Also See for AQ24A2RC:

Advertisement

Quick Links

SERVICE
AIR CONDITIONER
E DB81-00188A(4)
ROOM AIR CONDITIONER
INDOOR UNIT
AQ24A2RC
AQ18A6RC
AQ18A0RCD
Manual
OUTDOOR UNIT
UQ24A2RC
UQ18A6RC
UQ18A0RCD
CONTENTS

Advertisement

loading

Related Manuals for Samsung AQ24A2RC

Summary of Contents for Samsung AQ24A2RC

  • Page 1: Table Of Contents

    ROOM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT AQ24A2RC UQ24A2RC AQ18A6RC UQ18A6RC AQ18A0RCD UQ18A0RCD SERVICE Manual AIR CONDITIONER CONTENTS 1. Installation 2. Disassembly and Reassembly 3. Troubleshooting 4. Exploded Views and Parts List 5. Refrigerating Cycle Block Diagrams 6. Wiring Diagrams 7.

  • Page 2: Installation

    1. Installation 1-1 Refrigerant Refill Procedure • Refill an air-conditioner with refrigerant when refrigerant has been leaked at installing or using 1. Purge air(for new installation only). 2. Turn the 3-way valve clockwise to close, connect the pressure gauge(low pressure side) to the service valve, and open the 3-way valve again.
  • Page 3 1-2 “Pump down” Procedure 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. 2. Turn the 3-way valve clockwise to close and connect a pressure gauge(low pressure side) to the service valve, and open the 3-way valve again.

  • Page 4: Disassembly And Reassembly

    2. Disassembly and Reassembly Stop operation of the air conditioner and remove the power cord before repairing the unit. 2-1 Indoor Unit Parts Procedure Remark Front Grille 1) Stop the air conditioner operation and block the main power. 2) Seperate tape of front panel upper. 3) Contract the second finger to the left, and right handle and pull to open the inlet grille.
  • Page 5 Parts Procedure Remark Ass’y Tray Drain. 1) Do “1” above. Separate the drain hose from the extension drain hose. 2) Take the display PCB out. (Center of indoor unit) 3) Loosen two fixing screws of left and right. 4) Pull tray drain out from the back body. Electrical Parts 1) Do “1”, “2”, above.
  • Page 6 Parts Procedure Remark Fan Motor and 1) Do “1” “2” ”3” “4”, above. Cross Fan 2) Loosen the fixing three screws and separate the motor holder. 3) Loosen the fixing screw of fan motor. (By use of M3 wrench) 4) Separate the fan motor from the fan. 5) Separate the fan from the left holder bearing.
  • Page 7 2-2 Outdoor Unit Parts Procedure Remark Cabinet 1) Turn off the unit and remove the power cable 2) Remove the top cover. 3) Remove the control box cover. 4) Unplug the ass'y cable. 5) Remove the cabi-side. 6) Remove the cabi-front. * When you assemble the parts, check if the each parts and electric connectors are fixed firmly.

  • Page 8: Troubleshooting

    3. Troubleshooting 3-1 Items to be checked first 1) The input voltage should be rating voltage 10% range. The airconditioner may not operate properly if the voltage is out of this range. 2) Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 7 cables.
  • Page 9 3-2 Fault Diagnosis by Symptom 3-2-1 No Power(completely dead)-Initial diagnosis 1) Checklist : (1) Is input voltage normal? (rating voltage ±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) (5) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC) Troubleshooting procedure...
  • Page 10 3-2-2 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 indoor fan motor properly connected with the connector (CN43)? (4) Is the running capacitor properly connected with the solder part of the PCB? 2) Troubleshooting procedure After unplugging out the power cord should...
  • Page 11 3-2-3 When the Outdoor Unit Does Not Operate. (Initial Diagnosis) 1) Checklist : (1) Is input voltage normal?(rating voltage ±10% range) (2) Is the set temperature of the remote control higher than room temperature in COOL mode? (3) Is the POWER IN connector (CN78) linked correctly? (4) Is the outdoor unit properly connected with the TERMINAL BLOCK connector(6P)? Troubleshooting procedure After unplugging out the power cord should be recon-...
  • Page 12 3-2-4 When the UP/DOWN Louver Motor Does Not Operate. (Initial Diagnosis) Checklist : (1) Is input voltage normal? (rating voltage ±10% range) (2) Is the UP/DOWN louver motor properly connected with the connector (CN61)? Troubleshooting procedure Remove power cord and plug in again in approx. 5 seconds. Is operating lamp blinking? Check as in the procedure "No Power parts".
  • Page 13 3-2-6 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 8. “...
  • Page 14 3-3 Replace PCB module 3-3-1 Replace PCB module Remove power cord Replace the PCB module Check the connection and plug in Does al display lamp blink or STD lamp blink? Replace another PCB module Refer to set up the Model option...

  • Page 15: Exploded Views And Parts List

    4. Exploded Views and Parts List 4-1 Indoor Unit 13-1 10-1 10-3 10-2...
  • Page 16 Parts List Q’TY CODE NO Description Specification AQ24A2RC AQ18A6RC AQ18A0RCD DB64-00127A GRILLE AIR INLET HIPS DB63-30150C GUARD AIR FILTER DB74-10101C CLEANER FILTER ASS´Y ASS´Y DB61-10164B CASE-CLEANER FILTER DB74-10082A DEODORIZING FILTER POLYESTER/CARBON DB74-10081A CLEANER FILTER POLYESTER/COTTON DB63-00091A COVER TERMINAL ABS(V0) DB64-00130A...
  • Page 17 4-2 Outdoor Unit 4-2-1 24K BTU 13-2 14-3 15-6 15-4 12-2 15-1 12-1 15-5 13-1 15-3 15-2 17-1 17-2 17-3...
  • Page 18 Parts List(24K) Q’TY Description Specification Remark CODE NO UQ24AZRC DB90-00652P ASS´Y-CABI FRONT ASS´Y DB90-20210A ASS´Y-BASE OUT ASS´Y DB67-50074A FAN-PROPELLER AS+G/F20% DB60-20020A BOLT SPECIAL M8 L25 DB31-00027F MOTOR FAN OUT OSM-906SRC DB95-20147A ASS´Y-MOTOR B/K SGCC-M DB94-50039C ASS´Y-PARTITION SGCC-M DB96-01916B ASS´Y-CONDENSER ASS´Y DB90-40176B ASS´Y COVER-CONTROL ABS(V5)
  • Page 19 4-2-2 18K BTU(AQ18A RC) 12-3 12-4 12-2 12-1 15-1 15-5 15-4 15-6 15-3 15-2 15-7 13-1 12-5 17-1 17-2 17-3 17-4...
  • Page 20 4-2-3 18K BTU(AQ18A RCD) 12-3 12-4 12-2 12-1 15-2 15-1 15-3 15-5 15-7 15-6 15-4 13-1 If you need a receiver, install it at this point. In case of AQ18A0RCD, the capacity is 255cc 12-5 17-1 17-2 17-3 17-4...
  • Page 21 Parts List(18K) Q’TY Description Specification CODE NO UQ18A6RC UQ18A0RCD DB90-00652K ASS’Y-CABI FRONT SC-90073T DB90-00653K ASS’Y-CABI FRONT SC-90073T DB90-20210B ASS’Y-BASE OUT SC-90073T DB90-20160H ASS’Y-BASE OUT SC-90073T DB67-50063A FAN-PROPELLER AS+G/F20% DB60-30020A NUT FLANGE M6LF DB31-10119H MOTOR FAN OUT ASS035ZTEE DB31-00056D MOTOR FAN OUT ASS030ZTEC DB61-20008C BASE-MOTOR...
  • Page 22 4-2-4 PCB Box Parts List Description Specification Remark Q’TY ASS’Y MAIN PCB PD-SH30ZC-02 ASS’Y THERMISTOR 103AT 240/240 ASS’Y PCB DISPLAY ASS’Y CASE CONTROL COVER DISPLAY...
  • Page 23 MEMO...

  • Page 24: Refrigerating Cycle Block Diagrams

    Use Temp. Condition(°F) MODEL Operating Condition (psi) Indoor Outdoor 3-Way Valve Standard 57~71 46~54 46~54 Cooling Max over load Low temp AQ24A2RC Standard 270~327 90~97 140~158 Heating Max over load Low temp Standard 64~78 46~54 46~54 Cooling Max over load Low temp...
  • Page 25 6. PCB Diagrams 6-1 Main PCB(PD-SH30ZC-02)
  • Page 26 Parts List Design-Location 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 CHOKE-COIL LSA-05230P,AC250V,2A,30.5x22x3 BZ61 BUZZER CBE2220BA,STICK,-,-,-,-,-,-,- F701 FUSE FST,250V,3.15A,20MM,VDE,50T-03...

  • Page 27: Wiring Diagrams

    7. Wiring Diagrams 7-1 Indoor Unit AQ24A2RC/AQ18AORCD AQ18A6RC...
  • Page 28 7-2 Outdoor Unit UQ24A2RC DIAGRAM-OUTDOOR MARK NAME MARK NAME MAGNETIC CONTACTOR TB 1,2 TERMINAL BLOCK SOLENOID COIL CRANK CASE HEATER CAPACITOR FAN MOTOR FUSE(2A,250V~) SPARK KILLER UQ18A6RC DIAGRAM-OUTDOOR MARK NAME MARK NAME MAGNETIC CONTACTOR TB1, 2 TERMINAL BLOCK SOLENOID COIL FAN MOTOR FUSE SPARK KILLER...
  • Page 29 UQ18AORCD DIAGRAM-OUTDOOR MARK NAME MARK NAME POWER RELAY TB1, 2 TERMINAL BLOCK SOLENOID COIL FAN MOTOR FUSE(2A, 250V~) SPARK KILLER...
  • Page 30 MEMO...

  • Page 31: Schematic Diagrams

    8. Schematic Diagrams 8-1 Indoor Unit...
  • Page 32 MEMO...
  • Page 33 ELECTRONICS...

This manual is also suitable for:

Aq18a6rcAq18a0rcdUq24a2rcUq18a6rcUq18a0rcd