Daewoo DWC-121R Service Manual
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Daewoo DWC-121R Service Manual

Daewoo DWC-121R Service Manual

Window type room air conditioner
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Service Manual

Window Type
Room Air Conditioner
Model: DWC-121R / (DWC-124R)
Caution

: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).
DAEWOO ELECTRONICS CO., LTD.
40
S/M No. : DWC121R040
DWA-122R / (DWA-124R)
DWB-122R / (DWB-124R)
DWA-121R / DWB-121R
DWB-123R / DWA-150R
DWA-151R / (DWA-152R)

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Summary of Contents for Daewoo DWC-121R

  • Page 1: Service Manual

    : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr). DAEWOO ELECTRONICS CO., LTD.

  • Page 2: Table Of Contents

    Contents CONTENTS 1. Specifications ....................2 2. Operation .....................3 3. Wiring Diagram..................12 4. Refrigerant Cycle ..................13 5. Control Block Diagram.................14 6. Circuit Diagram..................15 7. Trouble Shooting..................18 8. Key Components of Electronic Circuit ............28 9. Disassembly Instructions ................30 10. Exploded Diagram and Parts List..............33...

  • Page 3: Specifications

    1. SPECIFICATIONS DWC-121R DWA-122R DWB-122R DWA-151R MODEL DWA-121R DWB-121R DWB-123R DWA-150R ITEM (DWC-124R) (DWA-124R) (DWB-124R) (DWA-152R) Function Cooling only Power source AC 115V, 60Hz AC 208~230V, 60Hz AC 220~240V, 50Hz AC 220~230V, 50Hz AC 240V, 50Hz AC 208~230V, 60Hz Btu/h 12,100 12,000 12,000...

  • Page 4: Operation

    2. OPERATION PARTS OF NAME AND FUNCTION -121R/DW -122R/DWB-123R/DWA-150R/DWA-151R (NOTE: A or B or C) Room Air-conditione Room Air-conditione PART NAME PART NAME AIR FILTER BLADE HORIZENTAL GRILLE FRONT AIR VENT CABINET FRAME GUIDE TOP BLADE VERTICAL FRAME WINDOW KIT PANEL CONTROL SHUTTER WINDOW REMOTE CONTROLLER...
  • Page 5 -124R/DWA-152R (NOTE: A or B or C) PART NAME PART NAME AIR FILTER BLADE HORIZENTAL GRILLE AIR VENT CABINET FRAME GRILLE BLADE VERTICAL FRAME GUIDE TOP PANEL CONTROL FRAME WINDOW KIT REMOTE CONTROLLER SHUTTER WINDOW...

  • Page 6: Remote Controller

    REMOTE CONTROLLER REMOCON SIGNAL TRANSMITTER TIMER/CANCEL • Everytime you push this button, timer is set as follow. (1Hr 2Hr 3Hr 4Hr 5Hr 6Hr 8 Hr 10Hr 12Hr 16Hr 20Hr 24Hr CANCEL). SLEEP After the unit is timed, if this button is TIMER/ •...

  • Page 7: Remote Controller Display

    REMOTE CONTROLLER DISPLAY SELECT ONE ALTERNATIVE PAGE 6 or PAGE 7 MODE DISPLAY • It displays the operating mode. TEMP./TIMER DISPLAY • It displays the temperature and the timer. REMOCON SIGNAL RECEIVER TEMPERATURE SET BUTTON • It is the button to set the desired room temperature.
  • Page 8 MODE DISPLAY • It displays the operating mode. TEMP./TIMER DISPLAY • It displays the temperature and the timer. REMOTE SIGNAL RECEIVER TEMPERATURE SET • It is the button to set the desired room temperature. The temperature can be set within a range from 16°C (60°F) to 32°C (90°F) by 1°C (1°F) SENSOR Room Air-conditioner...
  • Page 9 Replacing Batteries Remove the COVER from Insert two battaries. Re-attach the cover. the back of the remote • Be sure that the (+) and • Slide it back into position controller. (–) directions are correct • Slide the cover • Be sure that both batteries according to the arrow are new direction...
  • Page 10 DESCRIPTION OF FUNCTIONS OFF-Timer If you set time in OFF-Timer Mode, the unit will stop at the set time. Unit ON Unit OFF SET Time HOUR ON-Timer If you set time in ON-Timer Mode, the unit will run at the set time. Unit ON Unit OFF SET Time...

  • Page 11: Fan Speed

    Fan Speed (1) Motor speed (high speed, normal speed, low speed). (2) Remote controller setting fan speed. (H, M, L) (3) Relation of operating mode between fan speed. FAN ONLY COOL TURBO Sleep Mode (1) When you are going to sleep, select sleep button in remocon and the unit controls the room to the desired temperature.
  • Page 12 Auto Swing (1) When you push this button, in remocon the left/right flap move to the position of keeping the room temperature comiortable. (2) The air discharge direction procedure is below. Auto swing Fixed Turbo Mode(Powerful Cooling) (1) Cooling Condition Fan Speed: High speed Set temperature:16˚C(Fixed) Compressor and Fan...

  • Page 13: Wiring Diagram

    3. WIRING DIAGRAM (3103529000)

  • Page 14: Refrigerant Cycle

    4. REFRIGERANT CYCLE Evaporator Blower fan Capillary tube Accumulator MOTOR Compressor Propeller fan Condenser Model Name DWA-122R DWB-122R DWC-121R DWA-151R DWA-121R DWB-121R DWB-123R DWA-150R (DWA-124R) (DWB-124R) (DWC-124R) (DWA-152R) Contents ID1.6Ø x L800 Capillary tube ID1.6Ø x L900 ID1.6Ø x L600 ID1.6Ø...

  • Page 15: Control Block Diagram

    5. CONTROL BLOCK DIAGRAM Front PCB Remote controller 88 LED Remocon Signal Operating Mode Fan mode Lamp Receiver Fan speed Turbo mode Lamp Timer selection Cooling mode Lamp Auto swing Room Temp Lamp Temp setting Desired Temp Lamp ON/OFF Timer Lamp Sleep Main PCB DC 5V...

  • Page 16: Circuit Diagram

    6. CIRCUIT DIAGRAM...

  • Page 17: Part List

    Part List MAIN PCB ASS’Y(3104302300) PART NAME SPEC PART CODE Q’TY REMARK IC MICOM TMP47P443N 13GSHK64-- IC DRIVE TD62004AP 13GT62004A IC DRIVE TD62783AP 13GT62783A IC REGULATOR KIA7812P 1KA7812AP- IC REGULATOR KIA7805P 1KA7805AP- IC RESET KIA7042P 1KA7042P-- FUSE CLIP AFC-520 3107000600 FUSE FUSE 250V, 3.15A...
  • Page 18 Front PCB ASS’Y(3104302400) PART NAME SPEC PART CODE Q’TY REMARK LED DISPLAY 3103003700 DISP C-CERA 103Z 50VDC CXCH1H103M RECEIVE MODULE PIC-26043TH2 1PC26043TH REMO DLSO-5031D DDLS05031D DLG-5031D DDLG5031D- SWITCH TACT JTP1212 3109300900 DIODE 1N4148 DZN4148A-- D1-6 WAFER SMAW250-08 3108804800 WAFER SMAW250-10 3108802400 FR-1 3104302200...

  • Page 19: Trouble Shooting

    7. TROUBLE SHOOTING Self-Diagnostic Function 1) Error Code 1(Er) Check the connector of room air thermistor. (or connecting wire) Check soldering of connecting on control P.C.B. (Error of soldering or short) Check the resistance of room air thermistor. “Press the temperature Keys (Up & Down), Error code is displayed.” Unit Not Run The power is applied to the unit Rating voltage...
  • Page 20 Only Compressor Do not Run - Check the following at cooling mode Check the Main P .C.B Check the voltage between “POWER ” Rating voltage the circuit for relay less than 90% driving. “RL1 ” of Main P .C.B Rating voltage more than 90% Check the connecting Rating voltage wire between Main...
  • Page 21 PCB DRIVING DESCRIPTION...
  • Page 22 Power Supply(1) AC 220V VAR1 POWER 2200/35V TRANS 7805 7812 100/16V 470/25V DESCRIPTION DC Power Supply in circuit needs +12V and +5V. +12V is used for Compressor Driving Relay, Fan Motor Driving Relay, Buzzer Driving, Swing Motor Driving Relay and LED Display. AC voltage of secondary Power Transformer is rectified by 4 Diode, and it is filtering by Main Condensor C2.
  • Page 23 Oscillation(2) MICOM 8 MHz DESCRIPTION Oscillatory Frequency drive Micom, it is made up 8MHz resonator oscillatory Freqency. Ocillatory wave is as following Fig 2-1. -10% +10% Fig 2-1...
  • Page 24 Sensor(3) Room temperature Sensor Input ROOM:PT-K43C MICOM 12.7K 0.01 DESCRIPTION Number 15 of Micom is Terminal of A/D convertor Input. Room temperature is sensing by change of Thermister Resistance, Micom is put in 5V by ratio between R3 (12.7K ) and Room sensor. Relation between temperature and voltage is following Table 3-1.
  • Page 25 Remote Controller(4) DESCRIPTION Signal from Remote Controller put in only Control Data Signal at Micom Terminal of Number 5, which is gotten field of Carrier (38KHz) from Receive Module. Signal Wave repeat third as following Fig 5-1. But in Secondary Wave Custom Code is Reversed Face. 4.5ms 16bit 16bit...
  • Page 26 Micom Power Supply(5) 100 F/16V MICOM DESCRIPTION MICOM Power is supplied 5V at Number 28 using VDD, Number 6 using Analog Reference of A/D Converter. C9, C10 is Ripple filter.
  • Page 27 Reset(6) 5.6K MICOM 7042 + C11 RESET IC 1 F/50 DESCRIPTION Voltage less than about 4.2V put in Micom Terminal of Number 6 and then Micom reset. Reset IC detect Power ON and Voltage greater than 4.2V, and then send Reset Signal. Vcc (+5V) 4.2V DELAY TIME...
  • Page 28 Function Selecting(7) MICOM TEST ˚F/ ˚C DESCRIPTION Selecting Function is as following table 9-1. Selection S/W SHORT OPEN Function ˚F / ˚C ˚F ˚C TEST Table 9-1...

  • Page 29: Key Components Of Electronic Circuit

    8. KEY COMPONENTS OF ELECTRONIC CIRCUIT (1) IC3 (MICOM) TMP47C443N XOUT TEST HOLD (KE0) Display Out R92 (SCK) RESET Fan Speed(Hi) Display Out R91 (SO) Remocon Signal Display Out R90 (SI) R71 (PULSE) Display Out R83 (T1) R72/VAREF Display In, Key Out Comp R82 (INT1/ZIN) R40 (AIN0)
  • Page 30 (3) U2(TD62004AP) DARLINGTON ARRAYS IN1 1 16 OUT 1 KID65004AP IN2 2 15 OUT 2 IN3 3 14 OUT 3 10.5K IN4 4 13 OUT 4 IN5 5 12 OUT 5 7.2K IN6 6 11 OUT 6 IN7 7 10 OUT 7 GND 8 9 COMMON FREE WHEELING DIODES...

  • Page 31: Disassembly Instructions

    9. DISASSEMBLY INSTRUCTIONS Please refer to the chapter 10 (Exploded diagram and parts list). NOTE: A or B or C Before service of 1. Stop the unit, remove the power cord from the receptacles. any part. 2. Move the unit to the safe location for the suitable work. Ass’y Fan Motor •...
  • Page 32 • HOW TO REMOVE THE FRONT GRILLE FOR ALL MODELS EXCEPT DW -124R, DWA-152R 1. Pull the Air-filter out of the Front Grille. 2. Loosen screw which fasten Front Grille with driver. 3. Disassemble Front Grille from Chassis. – Front Grille and chassis are fixed with snap-fit. 1) Release right-lower snap-fit.
  • Page 33 • HOW TO REMOVE THE FRONT GRILLE FOR ONLY DW -124R, DWA-152R 1. Open the grille upward by pulling out the bottom of the grille, lift it. 2. Remove screw which fasten Frame Grille with driver. 3. Disassemble Frame Grille from Chassis. –...

  • Page 34: Exploded Diagram And Parts List

    10. EXPLODED DIAGRAM AND PARTS LIST DWA-121R,DWA-122R(124R),DWB-121R,DWB-122R(124R),DWB-123R, DWC-121R(124R),DWA-150R,DWA-151R(152R) PARTS LIST  Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) CODE COMPONENTS Q'TY...

  • Page 35: Cabinet

    3101404100 COVER MOTOR 3104202000 PANEL HOUSING SGCC T1.0 3102000500 FIXTURE RUBBER 24-1 3100000010 BUSHING GUIDE 3108004920 MOTOR FAN DAEWOO MOTOR (AM 12DWD10) DWC-121R,124R(ONLY) 3108005020 MOTOR FAN DAEWOO MOTOR (AM 12DWD12) DWA-121R,DWA-122R,124R(ONLY) 3108006000 MOTOR FAN OBM2502U1 DWA-121R,DWA-122R,124R(ONLY) 3108005110 MOTOR FAN DAEWOO MOTOR (A9525CA070)
  • Page 36 CODE COMPONENTS Q'TY SPECIFICATION REMARK 3104302300 PCB MAIN AS – 3104302400 PCB FRONT AS – 5EPU04000 TRANSFORMER DWA-220B(115V/60Hz) DWC-121R,124R(ONLY) 5EPU04100 TRANSFORMER DWA-230A(220V/60Hz) DWA-121R,122R,124R,150R,151R,152R(ONLY) 5EPN04300 TRANSFORMER DWA-230V(230V/50Hz) DWB-121R,DWB-122R,123R,124R(ONLY) 3101300300 POWER CORD KKP-30B,13A 125V DWC-121R,124R(ONLY) 3103001600 POWER CORD WS-001I 250V 13A DWA-121R,122R,124R,150R,151R,152R(ONLY) 3101300600 POWER CORD KKP-4819R 250V 10A...
  • Page 37 DWA-121R, DWA-122R, DWB-121R, DWB-122R, DWB-123R, DWC-121R, DWA-150R,...
  • Page 38 A-151R DWA-151R EXPLODED DIAGRAM...
  • Page 39 DW -124R, DWA-152R EXPLODED DIAGRAM (NOTE: A or B or C)
  • Page 41 DAEWOO ELECTRONICS CO., LTD. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” FAX: 02) 590-6291 TEL: 02) 360-7114/590-6151~5 http://www.dwe. daewoo.co.kr S/M NO.: DWC121R040 PRINTED DATE: APR. 2002...

This manual is also suitable for:

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