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Samsung ACH2400C Service Manual

Cassette type air conditioner
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SERVICE
AIR CONDITIONER
E DB81-00206A(3)
CASSETTE TYPE AIR CONDITIONER
(Cool and Heat)
Type
Indoor Unit
ACH2400C
ICH2400C
ACH2800C
ICH2800C
ACC2400C
ICC2400C
ACC2800C
ICC2800C
ACC4400C
ICC4400C
Manual
Outdoor Unit
Panel
UCH2400C
IFS095G05
UCH2800C
UCC2400C
UCC2800C
UCC4400C
CONTENTS

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Summary of Contents for Samsung ACH2400C

  • Page 1: Table Of Contents

    CASSETTE TYPE AIR CONDITIONER (Cool and Heat) Type Indoor Unit Outdoor Unit Panel ACH2400C ICH2400C UCH2400C IFS095G05 ACH2800C ICH2800C UCH2800C ACC2400C ICC2400C UCC2400C ACC2800C ICC2800C UCC2800C ACC4400C ICC4400C UCC4400C SERVICE Manual AIR CONDITIONER CONTENTS 1. Installation 2. Disassembly and Reassembly 3.

  • 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 two 3-way valves. 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. 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 5 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 6 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 7 Disassembly and Reassembly Part name Procedures Picture 3. Disconnect the other end of the cable to the outdoor unit through the ceiling & the hole on the wall between the control box and the assembly. Method 1 Do ! above. Fan and motor 1.
  • Page 8 Disassembly and Reassembly Part name Procedures Picture Fan and motor 3. Disconnect float switch wire connected to terminal board (F1, F2). 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 9 Disassembly and Reassembly Part name Procedures Picture Fan and motor Pump...
  • Page 10 Disassembly and Reassembly Part name Procedures Picture Pump...
  • Page 11 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 12 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 onto 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 13 Disassembly and Reassembly Part name Procedures Picture Fan and motor Do #-1, 2, 3 above. Method 2. 1. For separation of Ass'y cushion drain from Pump the main body. ! Cabinet guide A (2EA) @ Cabinet guide B (1EA) # Remove each cabinet power cord. $ Remove the obstacles of pump drain and ass'y sensor float wire due to the movement of BKT wire.
  • Page 14 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 15 Disassembly and Reassembly Part name Procedures Picture Pump 6. Separate the hose drain inserted in the outlet of pump drain. 7. Separate from the BKT pump the pump drain separated from the main body from the BKT pump. Heat exchanger Do $-1 ~ $-4 1.
  • Page 16 Disassembly and Reassembly Part name Procedures Picture 3. Separate holder guide evap (4 EA). 4. Lift up the heat exchanger from the main body.
  • Page 17 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 18 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 19 Disassembly and Reassembly Part name Procedures Picture Do ! above. Front panel - Cushion-A Remove two screws fixing cushion-A inside the front and lift it up. Front panel Do 1-!, 1-@ and 1-# above. - Bio-pure filter 1. Separate the bio pure filter from the filter (Optional) air.
  • Page 20 Disassembly and Reassembly Outdoor Unit (24K, 28K) 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.
  • Page 21 MEMO...

  • Page 22: Troubleshooting

    3. Trouble Shooting Trouble shooting by outdoor unit error code ERROR DESCRIPTION REFERENCE PART ERROR CODE Indoor unit room thermistor error EC01 Indoor unit pipe thermistor error EC02 Outdoor unit thermistor error EC03 Float switch open error EC04 Communication error between indoor unit and outdoor unit EC05 Communication error between wired remote controller and indoor unit EC06...
  • Page 23 Trouble Shooting EC01 : Trouble on the thermistor related part of indoor unit. • EC01 : Trouble on the room thermistor related part of indoor unit. - E1 of outdoor unit PCB 7-segment - Reservation lamp of wireless receiving board is flickering with 1 Hz. - Action items when “*1”...
  • Page 24 Trouble Shooting EC03 : When the trouble is found on the part related to the outdoor unit thermistor. - E6 of outdoor unit PCB 7-segment - Operation lamp and filter lamp of wireless receiving board are flickering with 1Hz. - Action items when “*6” displays on the wired remote controller. Check point : - Defect of indoor unit - Indoor unit thermistor defect...
  • Page 25 Trouble Shooting EC04 : When the trouble is found on the drain pump and float switch installed on the indoor unit. EC01 : Trouble on the thermistor related part of indoor unit. - E9 of 7-segment of outdoor unit PCB - Reservation lamp of wireless receiving board and filter lamp are flickering with 1 Hz.
  • Page 26 Trouble Shooting EC05 : When the trouble is found in the communication related part between indoor unit and outdoor unit. - EA of 7-segment of outdoor unit PCB. - Reservation lamp and filter lamp of wireless receiving board is flickering with 1 Hz. - Action item when “*A”...
  • Page 27 Trouble Shooting EC06 : When the trouble is found in the communication related part between indoor unit and wired remote controller. (during single operation, not group control) - EC of 7-segment of outdoor unit PCB. - Wireless receiving board lamp and reservation lamp is flickering with 1Hz. - Action item when “C”...
  • Page 28 Trouble Shooting EC07 : When the trouble is found in the communication related part between outdoor unit pipe thermistor. - ED of 7-segment of outdoor unit PCB. - Reservation lamp and filter lamp of wireless receiving board is flickering with 1Hz. - Action item when “D”...
  • Page 29 Trouble Shooting EC08 : When the reverse of three phase power is found. Check point : - Check CN76 to connect correctly. - Check IC51, IC52, IC53 to connect correctly. Check the Mis-insertion on CN76? Insert correctly Wire shorted? Check the pin no 4 of IC51, IC52, IC53, does this make round type signal? IC correct Replace wire...
  • Page 30 Trouble Shooting EC09 : When the trouble is found on the part related to the wireless receiving board of the indoor unit. Check point : - Defect of wireless remote controller PCB - Defect of wireless remote controller receiving board PCB - Indoor unit PCB defect Mis-insertion of CN9? Insert correctly...
  • Page 31 Trouble Shooting EC10 : When the trouble is found on the part related to the wired remote controller. (single operation) Check point : - Defect of communication line between indoor unit and wired remote controller. - Output of indoor unit Micom - Defect of wired remote controller PCB - Indoor unit PCB defect Is the wired remote...
  • Page 32 Trouble Shooting EC11 : When the trouble is found on the part related to the fan motor of indoor unit. Check point : - Defect of PCB relay of indoor unit. - Output of indoor unit Micom - Indoor fan motor defect - Defect of PCB IC06 of indoor unit Is the power source normal? AC208~230 60Hz Check the replay part...
  • Page 33 Trouble Shooting EC12 : When the trouble is found on the part related to the fan motor of outdoor unit. Check point : - Outdoor unit PCB relay defect - Output of outdoor unit micom - Outdoor unit fan motor defect - Defect of IC07 of outdoor unit PCB Is the power source normal? AC208~230 60Hz Check and replace...
  • Page 34 Trouble Shooting EC13 : When the trouble is found on the part related to comp of outdoor unit. Check point : - Indoor unit PCB relay defect - Output of indoor unit micom - Comp defect - Magnet switch defect Is the power source normal? AC208~230 60Hz Check and replace Is there no wrong connection and contact of indoor...
  • Page 35 Trouble Shooting EC14 : When the trouble is found on the part related to the up & down swing motor of indoor unit (cassette model) Check point : - Wire short between indoor unit PCB up & down swing motor connector or bad contact. - Output of indoor unit micom - Defect of up and down swing motor After check of the short circuit of harness for...
  • Page 36 Trouble Shooting EC15 : When the trouble is found on the part related to drain pump of indoor unit. Check point : - Indoor unit PCB ↔ Drain pump connector wire, indoor unit Micom No.6 Pin output, IC06 No.6 Pin output. - Drain pump, RY72, DC12V power, AC208~230V 60Hz power, indoor unit option switch.
  • Page 37 Trouble Shooting EC16 : When the trouble is found on the part related to float switch of indoor unit. Check point : - Indoor unit PCB ↔ float switch connector wire, voltage level of indoor unit micom pin no. 55 - Float switch, DC 5V power, indoor unit option switch Is the wire connected correctly between indoor unit and outdoor unit? After check of short circuit on the wire between indoor unit and connector wire of float switch,...
  • Page 38 Trouble Shooting EC17 : When the trouble is found on the part related to ventilator of indoor unit. Check point : - Indoor unit PCB ↔ ventilator connector wire, output voltage of indoor unit micom pin No. 5 - Ventilator, DC 12V power, DC5V power, indoor unit option switch. Is the wire correctly connected between indoor unit and outdoor unit? after check of shot circuit between indoor unit and ventilator wire, start the wind control and check the indoor fan and then start the test.
  • Page 39 Trouble Shooting EC18 : When the trouble is found on the part related to power system of indoor unit. Check point : - Indoor unit AC208V~AC230V input voltage, DC12V output, DC5V output, output voltage of pin no.2 and 3 of CN15. - Power transformer, F101, F102, F701 After checking the correct connection between indoor unit and outdoor unit, and check again...
  • Page 40 Trouble Shooting EC19 : When the trouble is found on the part related to power system of output unit. Check point : - Outdoor unit AC208V~AC230V input power, DC12V output, DC5V output - Power transformer, F101, F701 Check to confirm whether the wire is connected correctly between indoor unit and outdoor unit? Is the voltage between CN71 pin no.
  • Page 41 Trouble Shooting EC20 : When the centralized controller lamp is flickering. (during centralized control) Check point : - Defect on the address assignment for the relay equipment connected with centralized controller. - Defect on centralized controller PCB - Defect on the indoor unit PCB Is the address of Transmitter installed on the Set again in order to avoid the duplicated address indoor unit set correct?
  • Page 42 MEMO...
  • Page 43 4. Exploded Views and Part LIst 4-1 Indoor Unit 34-1...

  • Page 44: Exploded Views And Parts List

    Exploded views and parts list Part List (Indoor Unit) Q'TY Code No. Description Specification ACC2400C ACC2800C ACH2400C ACH2800C ACC4400C DB63-00058A GUARD-SAFETY SGCCM,T0.8 DB63-00050A COVER-CONTROL SGCCM,T0.7 DB63-00049A COVER-PCB SGCCM,T0.7 DB90-00127A ASSY CASE-CONTROL ASS’Y DB90-00128A ASSY-CASE-PCB ASS’Y DB65-00029A TERMINAL-BOARD-5P 250V20A,5P DB65-00029K TERMINAL-BOARD-8P...
  • Page 45 4-2 Panel Front Disassembly Diagram Panel Front 18-4 18-3 18-2 18-1...
  • Page 46 Exploded views and parts list ASSY PANEL PART LIST(KCV) Q'TY Remarks Code No. Description Specification IFS095G05/KCV DB64-00051A PANEL-FRONT HIPS DB69-00091A CUSHION-SIDE-A EPS, L182, W182, T38.5, W30 DB69-00092A CUSHION-SIDE-B EPS, L182, W182, T34.6, W20 DB69-00093A CUSHION-A EPS, L526, W28, T18.4, W9 DB69-00094A CUSHION-B EPS, L490, W66, T37.5, W33...
  • Page 47 4-3 Outdoor unit UCH2400C/2800C 13-3 14-3 14-1 14-2 14-4 12-2 16-5 16-4 16-1 12-1 18-1 16-6 13-2 13-4 13-1 16-7 16-3 16-2 13-1 UCC2800C/2400C 13-3 13-1 13-3...
  • Page 48 Exploded views and parts list Outdoor Unit Parts list Q’TY CODE NO CODE NO Description Specification ACC2400C ACC2800C ACH2400C ACH2800C DB90 - 10634L DB90 - 10634L ASS’Y CABI FRONT ASS’Y DB90 - 00228B DB90 - 00228B ASS’Y CABI FRONT ASS’Y...
  • Page 49 Exploded views and parts list UCC4400C 11-1 11-2 12-1 12-2 15-1...
  • Page 50 Exploded views and parts list Outdoor Unit Parts list Q’TY CODE NO Description Specification UCC4400C DB90-00250A ASSY CABI FRONT ASS’Y,SC-90073T DB68-10612A LABEL-SAMSUNG HARD PC,T0.5,67.5,238.5 DB90-00551A ASSY CABI BACK-LF RVSH040B2C0,SC-90073T DB67-50067A FAN-PROPELLER ABS+GF20,D495,4BLADE DB31-00060E MOTOR OSM-1286SRC(S550) DB31-00060F MOTOR FAN OSM-1286SRC(S551) DB90-30028F...
  • Page 51 MEMO...

  • Page 52: Refrigerating Cycle Block Diagrams

    5. Refrigerating Cycle Block Diagram 5-1 Model : ACH2800C Indoor Unit Outdoor Unit *Allowable pipe length : Max. 30m *Allowable drop distance : Max. 15m Check Valve 3-Way Valve Capallary Tube Capillary Tube Capallary Tube Heat Exchanger Heat (Condenser) Exchanger (Evaporator) Reservior Gas Side...
  • Page 53 5-2 Model : ACH2400C Indoor Unit Outdoor Unit *Allowable pipe length : Max. 30m *Allowable drop distance : Max. 15m Check Valve 3-Way Valve Capallary Tube Capillary Tube Capallary Tube Heat Exchanger Heat (Condenser) Exchanger (Evaporator) Gas Side 3-Way Valve...
  • Page 54 5-3 Model : ACC2400C, ACC2800C, ACC4400C Indoor Unit Outdoor Unit *Allowable pipe length : Max. 30m *Allowable drop distance : Max. 15m Check Valve 3-Way Valve Capallary Tube Capillary Tube Capallary Tube Heat Exchanger Heat (Condenser) Exchanger (Evaporator) Gas Side 3-Way Valve Compressor High Pressure switch...
  • Page 55 MEMO...

  • Page 56: Wiring Diagrams

    6. Wiring Diagrams 6-1 Indoor Unit ACH2400C/ACH2800C/ACC2800C/ACC2400C/ACC4400C CODE-NO : DB68-02242A...
  • Page 57 6-2 Outdoor Unit UCC2800C/2400C CODE-NO : DB68-02243A...
  • Page 58 Wirning Diagram UCH2800C/UCH2400C CODE-NO : DB68-02244A...
  • Page 59 Wirning Diagram UCC4400C CODE-NO : DB98-05375A...
  • Page 60 MEMO Samsung Electronics...

  • Page 61: Schematic Diagrams

    7. Schematic Diagrams 7-1 Wired Remote Controller Samsung Electronics...
  • Page 62 7-2 Centralized Controller Samsung Electronics...
  • Page 63 7-3 Indoor Unit Samsung Electronics Samsung Electronics...
  • Page 64 7-4 Outdoor Unit (UCC2400C, UCC2800C, UCC4400C) Samsung Electronics Samsung Electronics...
  • Page 65 Outdoor Unit (UCH-2800C/UCH2400C) Samsung Electronics Samsung Electronics...
  • Page 66 MEMO Samsung Electronics...
  • Page 67 Itself Solution Integrated technology supporting electronic library http://itself.sec.samsung.co.kr Copyright © 2002 By Samsung Electronics Co., Ltd. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable from without prior written permission of Samsung Electronics Co., Ltd.
  • Page 68 MEMO Samsung Electronics...
  • Page 69 MEMO Samsung Electronics...
  • Page 70 MEMO Samsung Electronics...
  • Page 71 MEMO Samsung Electronics...
  • Page 72 MEMO Samsung Electronics...
  • Page 73 MEMO Samsung Electronics...
  • Page 74 ELECTRONICS...

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