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Samsung AFPCC052CA0 Service Manual
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Samsung AFPCC052CA0 Service Manual

Samsung AFPCC052CA0 Service Manual

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SERVICE
AIR CONDITIONER
CASSETTE TYPE AIR CONDITIONER
Indoor Unit
Outdoor Unit
AFPCC052CA0
RFPC020CBM0
Manual
1. Product Specification
CONTENTS

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Summary of Contents for Samsung AFPCC052CA0

  • Page 1: Table Of Contents

    CASSETTE TYPE AIR CONDITIONER Indoor Unit Outdoor Unit AFPCC052CA0 RFPC020CBM0 Manual SERVICE AIR CONDITIONER CONTENTS 1. Product Specification 2. Disassembly and Reassembly 3. Refrigerating Cycle Block Diagrams 4. Control specification and Troubleshooting 5. Wiring Diagrams 6. Exploded Views and Parts List...
  • Page 2 1. Product Specifications 1-1 Table of Specifications INDOOR UNIT AFPCC052CA0 MODEL OUTDOOR UNIT RFPC020CBM0 Capacity Cooling Btu/h 18,500 5,400 Power supply AC 208-230V, 60Hz Cooling 1.780 Power input Cooling Running current Fan speed Indoor unit r.p.m. r.p.m. r.p.m. r.p.m. Air circulation...
  • Page 3 Product Specifications INDOOR UNIT AFPCC052CA0 MODEL OUTDOOR UNIT RFPC020CBM0 Compressor type scroll Outdoor unit model ZR18K4-PFV 1.120 motor output protection Heat exchanger type D-PLATE row x stages x fin pitch 2 x 24 x 1.7 Refrigerant control EXPANSION VALVE (R22)charge...
  • Page 4 1-2 Dimension 1-2-1 Indoor Unit Dimension of Indoor Unit (AFPCC052CA0) (Unit : mm) A View Name Remark Liquid Pipe Connection ø6.35 Flare Gas Pipe Connection ø15.88 Flare Drain Hose Connection OD29 ID25 Power Supply Air Outlet Air Inlet...
  • Page 5 Product Specifications 1-2-2 Outdoor Unit Dimension of outdoor Unit(RFPC020CBM0) (Unit : mm) (Front View) (Rear View) Dimension of fixing input bolt (Unit : mm)

  • Page 6: Disassembly And Reassembly

    2. Disassembly and Reassembly Stop operation of the air conditioner and remove the power cord before repairing the unit. Indoor Unit Part name Procedures Picture Front Grille & Filter 1. Open the front grille by pushing the tabs on the grille. IMPORTANT You must give attention when disassembling the front grille and must check the safety clips...
  • Page 7 Disassembly and Reassembly Part name Procedures Picture 4. Slowly loosen the four bolts holding the Front panel fixing holes panel to the assembly. 5. Open the electrical component box cover removing the screws. (3EA) 6. Disconnect the two cables between the assembly and the panel.
  • Page 8 Disassembly and Reassembly Part name Procedures Picture <*Optional> Receiver & Display Unit 7. Separate the front panel using two hooks on the both sides of the indoor unit. Hook and Eye Electronic part Do !-1, !-2, !-3 and !-4 above. 1.
  • Page 9 Disassembly and Reassembly Part name Procedures Picture 3. Disconnect the communication cable connected with terminal board. Fan & Motor Do ! and @ above. 1. Disconnect Fan Motor wire connector, thermistor wire connector and drain pump wire connector. 2. Disconnect wire connector to capacitor. 3.
  • Page 10 Disassembly and Reassembly Part name Procedures Picture Fan and Motor 4. Disconnect all connectors connected to PCB. 5. Remove PCB’s from assy case PCB. 6. Remove the screws (9EA) for disconnection of Bell mouth and cushion drain.
  • Page 11 Disassembly and Reassembly Part name Procedures Picture Fan and Motor...
  • Page 12 Disassembly and Reassembly Part name Procedures Picture Fan and Motor 7. Seperate Bell mouth and Box Ass’y from cushion drain. 8. Loosen the nut and separate the assy holder fan. 9. Lift down carefully the Ass'y fan.
  • Page 13 Disassembly and Reassembly Part name Procedures Picture Fan and Motor 10.Separate the motor connector wire and separate the wire holder fixed the bottom floor. 11.Remove the screw fixed onto the bracket wire fixed on the bottom of product and remove screw fixed noto earth wire and separate carefully the ass'y motor in from the product after separation of nut of ass'y motor in and grommet mount motor.
  • Page 14 Disassembly and Reassembly Part name Procedures Picture Fan and Motor Do #-1, 2, 3 above. Pump 1. For the separation of ass’y cushion drain from the main body, remove four brackets at corner of unit.
  • Page 15 Disassembly and Reassembly Part name Procedures Picture Pump 2. For the separation of ass'y cushion drain form the main body, remove the fixing screw of bracket at each corner of cushion drain. 3. Take out the CAP drain socket inserted in the ass'y drain cushion to remove the condensate in the drain cushion.
  • Page 16 Disassembly and Reassembly Part name Procedures Picture Pump 6. Separate the hose drain inserted in the outlet of pump drain. 7. Separate the pump drain form the brackets of main body. Heat exchanger Do $-1 ~ $-4 above. 1. Separate the cover pipe at the side of main body.
  • Page 17 Disassembly and Reassembly Part name Procedures Picture 3. Separate the bracks (2EA) fixing the heat exchanger on the base of main body. 4. Separate holder guide evap (4EA). 5. Lift up the heat exchanger from the main body.
  • Page 18 Disassembly and Reassembly Part name Procedures Picture Front panel Do ! above. -Cover Front Push 3 cover front fixing screws inside the front panel and snap fixing part to separate the cover front.
  • Page 19 Disassembly and Reassembly Part name Procedures Picture & Front panel Do ! above - Stepping Motor 1. Loosen each one of fixing screw at the corner part, ! cushion side-A and cushion side-B inside the front panel, and then lift it up.
  • Page 20 Disassembly and Reassembly Part name Procedures Picture 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 21: Refrigerating Cycle Block Diagrams

    3. Refrigerating Cycle Block Diagrams Indoor Unit (AFPCC052CA0) Outdoor Unit (RFPC020CBM0) Allowable pipe length : Max 30m Allowable drop distance : Max 15m 3 way valve Liquid pipe Filter Expansion valve Capillary tube Heat exchanger Heat (Condensor) exchanger (Evaporator) Gas pipe...

  • Page 22: Control Specification And Troubleshooting

    4. Control specification & Troubleshooting 4-1 Operation specification 4-1-1 Reverse phase/Cut phase detection(3 phase power model) : Error Code at trouble 1. After input power, check the status of power used in 3 phase power compressor. If 3 phase(L1 phase-L2 phase-L3 phase) sequence is wrong or there is a phase power not being input, mark the error and maintain set to stop.
  • Page 23 4-1 Operation specification (cont.) 1. After input power, outdoor MICOM check the indoor unit installed on the same system and wired remote controller, transmitter etc.(Tracking) Left Rigth I Tracking process marked on display part • Left numeral is an address that outdoor unit transfers communication..
  • Page 24 Control specification & Troubleshooting 4-1-2 Wired remote controller display specification at error occurring Display Description Remarks Communication error when there is no signal from outdoor unit Communication error to wired remote controller. In case of no signal for Communication error when there is no answer from wired 2 minutes remote controller to indoor unit.
  • Page 25 4-2 Troubleshooting When error occurs in air conditioner, error code is displayed on indoor unit display lamp and outdoor unit. 4-2-1 Indoor unit LED error diagnosis Error detection and re operation • If error occurs during the operation, badness is indicated by LED flickering and all operation is stopped except LED. •...
  • Page 26 Control specification & Troubleshooting 4-2-2 Outdoor unit display specification at error occurring Display Description Remarks DIS1 DIS2 High discharge temperature(Protection control) High condensor temperature(Protection control) Reverse phase detection error (Protection control) Outdoor protection control related error Compressor stop due to frozen evaporator of indoor unit (every times) Error of momentary power failure(Disappears when the unit is Off/On)
  • Page 27 4-3 Sequence for trouble diagnosis 4-3-1 Detection for the reverse phase in 3 phase power(Applied to 3 phase model only) Er → P4 (Detection for the reverse phase in 3 phase power) Outdoor unit display ✕ (Operation) Indoor unit display (Timer) (Airflow) (Filter)
  • Page 28 Control specification & Troubleshooting 4-3-2 The freezing of indoor unit heat exchanger Er → P5 (Detection for the indoor unit freezing) Outdoor unit display ✕ (Operation) Indoor unit display (Timer) (Airflow) (Filter) The status that indoor heat exchnager temperature ≤ 0˚C continues for 20 seconds. How to determine (The first anti freezing control) The status that indoor heat exchnager temperature ≤...
  • Page 29 Control specification & Troubleshooting 4-3-3 Out temperature sensor(OPEN/SHORT) Er → t1 (Out temperature sensor OPEN/SHORT error) Outdoor unit display ✕ (Operation) Indoor unit display (Timer) (Airflow) (Filter) Disconnection and short of out temperature sensor How to determine Disconnection or leak of applied sensor Reason of error Is not separated the out temperature sensor connector from...
  • Page 30 Control specification & Troubleshooting 4-3-4 Out temperature sensor(OPEN/SHORT) Er → t2 (Out heat exchanger temperature sensor error(OPEN/SHORT) Outdoor unit display ✕ (Operation) Indoor unit display (Timer) (Airflow) (Filter) Disconnection and short of out heat exchanger temperature sensor How to determine Disconnection or leak of Applied sensor Reason of error Is not separated the out...
  • Page 31 Control specification & Troubleshooting 4-3-5 Outdoor discharge temperature sensor error(OPEN/SHORT) Er → t3 (Outdoor discharge temperature sensor OPEN/SHORT error) Outdoor unit display (Operation) ✕ (Timer) (Airflow) ✕ (Filter) Indoor unit display Disconnection and short of out heat exchanger temperature sensor How to determine Disconnection or leak of Applied sensor Reason of error...
  • Page 32 Control specification & Troubleshooting 4-3-6 Communication error during the operation Er → E1 (Communication error during the operation) Outdoor unit display ✕ (Operation) (Airflow) ✕ (Filter) Indoor unit display (Timer) Disconnection and short of out heat exchanger temperature sensor How to determine Disconnection or leak of Applied sensor Reason of error To check the display after...
  • Page 33 Control specification & Troubleshooting 4-3-7 Communication error between indoor and outdoor after initial power input. Er → E2 (Tracking error) Outdoor unit display ✕ (Operation) (Airflow) ✕ (Filter) Indoor unit display (Timer) Mismatching the communicating indoor unit and setting switch indoor numbers When outdoor tracking How to determine Communication error between the indoor unit and outdoor unit, and installation number switch Reason of error...
  • Page 34 Control specification & Troubleshooting 4-3-8 Indoor floating switching error Er → E3 (Indoor floating switching error ) Outdoor unit display ✕ (Operation) ✕ (Timer) Indoor unit display (Airflow) (Filter) The status continues over 1 minute that indoor unit floating switch is opened. How to determine The rising of water level of drain pan due to the disorder of indoor unit drain pump, Reason of error...
  • Page 35 Control specification & Troubleshooting 4-3-9 Indoor floating switching error (cont.) To check the drain pump option type Is the switch K4 of OPT3 on indoor unit PCB OFF position? To exchange the indoor unit PCB Is the drain pump and floating switch mounted? To reset the indoor unit power after correction of the switch 4 of...

  • Page 36: Wiring Diagrams

    5. Wiring Diagrams 5-1 Indoor CODE No : DB98-06043A...
  • Page 37 5-2 Outdoor CODE No : DB98-06042A...
  • Page 38 MEMO...

  • Page 39: Exploded Views And Parts List

    6. Exploded Views and Parts List 6-1 Indoor...
  • Page 40 Exploded Views and Parts List Parts List (Indoor) Code No Description Specification Q’TY DB63-00058A GUARD-SAFETY SGCCM, T0.8, -m AG240E DB63-00050A COVER-CONTROL SGCCM, T0.7, -, -, AG240 DB63-00049A COVER-PCB SGCCM, T0.7, -, -, AG240E DB90-00127C ASSY CASE-CONTROL CABM-4500, CDVM DB90-00128A ASSY-CASE-PCB ACH2400E, - DB65-00029M TERMINAL-BOARD 5P...
  • Page 41 6-2 Outdoor 21~30...
  • Page 42 Exploded Views and Parts List Parts List (Outdoor) Code No Description Specification Q’TY DB95-10057Y ASSY COMP-SCROLL ZR18K4-PFV-501, SCROLL DB90-00074B ASSY-CABI-UP M-18, - DB90-10671G ASSY-CABI BACK AP-4350, NO BENDING DB90-10673D ASSY CABI FRONT AP-4351, C1-P/J DB90-40176B ASSY-COVER CONTROL AS-126-/1210, - DB94-50034B ASSY-PARTITION ASH-1807ER, ADD SEAL DB31-00056B...

  • Page 43: Schematic Diagrams

    7. Schematic Diagrams 7-1 Indoor...
  • Page 44 7-2 Outdoor...
  • Page 45 MEMO...
  • Page 46 MEMO...
  • Page 47 MEMO...
  • Page 48 MEMO...
  • Page 49 ELECTRONICS © Samsung Electronics Co., Ltd. May. 2002. Printed in Korea. Code No. DB98-05498A(1)

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