Daewoo 120CT, 120C Schematic

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Page 1

CONTENTS

1. Precaution

2. Specification

3. Wiring diagram

4. Structure and parts name

5. Function of main components

6. T r ouble shooting guide

7. How to disassemble

8. Refrigerant cycle

9. Exploded diagram and parts list

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1.PRECA UTION

1. Turn off unit.

- Make sure the unit is off and the AC cord is unplugged before repairing or servicing

2. In case of checking the circuit unavoidably while the unit is connected with power source, be careful not to connect with the part of electric charge. you may cause electric shock.

3. Use of proper part if you need to replace the part, be sure to use genuine part of servicing model. (Do not repair or replace the electric contact part, replace it. Consumer must not repair the unit, because it is dangerous.)

4. Use of proper tool.

- You must use the proper tool to repair the unit, and use the measuring appliance adjusted accurately.

5. Damage of electric wire and power cord when servicing.

- Check electric wire and a surely replace a damage electric wire and a damage power cord.

6. Never use connecting the middle of a wire, after cutting the middle of a wire,

- It may cause a fire and trouble.

7. Checking the insulation resistance.

- After you complete the assembly of the unit, surely check the insulation resistance. Confirm that the insulation

resistance of the power line and the ground terminal is over 30MΩ by measuring insulation ohmmeter.

8. Checking the ground.

- After checking the ground, servicing it completely.

9. Checking the installation.

- After checking the installation, servicing it completely.

10. Care children.

- When servicing, do not make the children approach the air-conditioner.

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2.SPECIFICATION

MODEL

ITEM

Function Cooling Power AC 208V~230V AC 220V~240V AC 208V~230V AC 220V~240V AC 208V~230V AC 220V~240V AC 208V~230V

Capacity

BTU/H 12,000 12,000 10,000 9,000 12,000 12,000 10,000

Dehumidification l/H 1.5 1.5 1.3 1.2 1.5 1.5 1.3

Power Input W 1,280 1,280 1,100 900 1,280 1,280 1,100

Electrical Data Running Currunt A 6.1 6.5 5.0 4.1 6.1 6.5 5.0

Starting Current A 30 34 29 24 30 34 23 Type Rotary

Compressor Model RCA120A RCB120A RCA100A RCB090A RCA120A RCB120A EAB090111A

Capacitor 30uF/370VAC 25uF/370VAC 25uF/370VAC 25uF/370VAC 30uF/370VAC 25uF/370VAC 15uF/370VAC

Refrigerant (R-22) 870g 880g 870g 820g 870g 880g 680g

DWA-120C DWB-120C DWA-100C DWB-090C DWA-120CT DWB-120CT DWA-100CT

1ø 60Hz 1ø 50Hz 1ø 60Hz 1ø 50Hz 1ø 60Hz 1ø 50Hz 1ø 60Hz

W 3,510 3,510 2,930 2,640 3,510 3,510 2,930

Air Filter WASHABLE FAN (Indoor side) BLOWER FAN FAN (Outdoor side) PROPELLER FAN

Unit W¡¿H¡¿D mm 560¡¿385¡¿605 Dimension Packing W¡¿H¡¿D mm 631¡¿474¡¿700 & Weight Net Weight kg 43 43 41 42 43 43 40

Gross Weight kg 48 48 46 47 48 48 45

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3.WIRING DIA GRAM

SELECTOR SWITCH

THERMOSTAT

SWITCH

FAN MOTOR

SWING

MOTOR

CAPACITOR

POWER

CORD

GRN/YEL(GRN)

BLU

ORG

YEL

GRN/YEL

RED BRN

TIMER

TIMER MOTOR

BRN(WHT)

251

BRN

OFF

1(d) 8(4)

2(1)

6(3)

4(2)

L C

FAN LOW MED HI

BLU(BLK)

COMPRESSOR

O.L.P

DWA-120CT DWB-120CT DWA-100CT

BLU

RED

YEL

YEL BRN BRN

RED RED

AUTO LOUVER

SWITCH

R S

BRN(WHT) BLU(BLK)

CORD

POWER

GRN/YEL(GRN)

CAPACITOR

BLU

RED

YEL

ORG

BLU

COMPRESSOR

R S

FAN MOTOR

YEL BRN BRN

SWING

MOTOR

GRN/YEL

SELECTOR SWITCH

OFF

1(d) 8(4)

2(1)

6(3)

4(2)

THERMOSTAT

O.L.P

SWITCH

L C

RED RED

YEL RED BRN

FAN LOW MED HI

AUTO LOUVER

SWITCH

DWA-120C DWB-120C DWA-100C DWB-090C

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4.STRUCTURE AND PAR TS NAME

1. EXTERNAL STRUCTURE AND PARTS NAME

• DWA-120CT/DWB-120CT/ DWA-100CT

4. BLADE HORIZONTAL 1 5. BLADE VERTICAL

3. CABINET

1. INSERT GRILLE

2. FRAME GRILLE

6. THERMOSTAT KNOB

7. TIMER KNOB

8. SELECTOR KNOB

• DWA-120C/DWB-120C/DWA-100C/DWB-090C

2. CABINET

3.BLADE HORIZONTAL 1

9. BRADE HORIZONTAL 2

10. DOOR VENTILATION

11. AUTO LOUVER SWITCH

4.BLADE VERTICAL

1. GRILLE FRONT

8. BLADE HORIZONTAL 2

9. DOOR VENTILATION

10. AUTO LOUVER SWITCH

5. AIR FILTER

6.THERMOSTAT KNOB

7. SELECTOR KNOB

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2. INTERNAL STRUCTURE AND PARTS NAME

1 FRONT GRILLE 2 SCROLL 3 GUIDE TOP 4 PLATE ORIFICE 5 FAN 6 CABINET

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5.FUNCTION OF MAIN COMPONENTS

1. THERMOSTAT

The thermostat automatically starts and stops the operation in order to keep the room temperature at a proper level. and this results in efficient use of power and economical cooling.

2. TIMER (Only DWA-120CT/DWB-120CT/DWA-100CT)

The Timer operation is set by means of the Knob. TO RELEASE THE TIMER OPERATION. Turn the timer Knob clockwise and set at continue position. Air conditioner will start normal operation. TO TURN OFF THE AIR CONDITIONER DURING THE TIMER OPERATION Set the timer Knob at off position. If the timer Knob is set at a position other than continue, air conditioner is in timer operation when restarting. TO CHANGE THE TIMER OPERATION Set the timer at a desired time. The timer will operate from now to the newly set time.

3. ROTARY SWITCH (SELECT OR)

OFF : This position stops all operations of the air conditioner.

HIGH COOL : This position provides the maximum air flow for rapid cooling, dehumidifying and dust removing

operations (use this position on sultry summer days)

MEDIUM COOL

LOW COOL : This position provides the minimum air flow for quiet cooling and dehumidifying operations.

FAN : This position provides fan operation alone for circulation and dust removal from room air.

: This position provides the medium air flow for moderate cooling.

(Suifable for night-time)

4. AUTO LOUVER SWITCH

When the auto louver switch is turned to "ON" position, two vertical louvers automatically move right and left. Thus, you can obtain comfortable cooling. The vertical louvers may be stopped at any position when the auto louver switch is turned off.

5. VENT

Brings outside air into room.

6. MOT OR

The motor is used to rotate the indoor and outdoor fan so that the room air can be recirculated.

7. F AN

Blower : The blower draws hot air from the room through the evaporator and then discharges it back into the

room after changing it into the cool air. It circulates the room air.

Propeller : The propeller draws outdoor air through chassis and cools the condenser and then blows the hot air out.

8. CAPACITOR

The capacitor enlarges the difference of phase between main coil and sub coil so that the compressor and Fan Motor starts well.

9. ACCUMULATOR

The accumulator blocks the inflow of liquid refrigerant & impurities into the compressor.

Page 8

6.TROUBLE SHOO TING GUIDE

T r oub le Situation Analysis Cause Remedy

Fan motor and compressor do not run

Switch is in "cool" position but the compressor does not run

1. Power failure

2. Power is supplied, but the equipment does not run

1. Not operating at all

1) Power plug

2) Circuit breaker

1) Receptacle

2) Operation switch

3) Cord or lead wire to the switch

4) Timer

1) Compressor

2) Thermostat

3)Selector switch

1) Power failure

2) Circuit breaker is tripped

3) Power plug is not

contacting

Disconnection

Mechanical failure of switch

1) Disconnection

2) Malfunction of contact

Disconnection or

burned-out

1) Failure

2) Malfunction

3) Knob is not set to the

proper setting

Failure of malfunction of

contact

Consult your electric company

In case of a breaker, turn it on and off a few times

Replace the power plug

Repair or replace the receptacle

Replace the cord or lead wire

Replace the compressor or connection wire

Replace Repair or replace Turn knob for cooler

setting Repair or replace the

switch

2. Compressor

4) O.L.P

5) Capacitor

1) Electricity

2) Room temperature and outside temperature

3) Compressor

4) O.L.P

5) Capacitor

1) Disconnection

2) Malfunction of contact

Lack of capacity

Disconnection

1) The voltage exceeded allowed range DWA-XXX (253V-187V)

DWB-XXX (264V-198V)

2) Capacity of wire is not sufficent

Extremely high

Burned-out

Malfunction

Lack of capacity

Repair

Repair or replace

Replace

Repair

Consult your electric company

Check the capacity of wire

Ventilate well and remove the heat source

Replace

3. Frequent start and stop

1) Thermostat

2) Capacitor

3) O.L.P

Malfunction

Lack of capacity

Malfunction

Replace

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T r oub le Situation Analysis Cause Remedy

The compressor runs but the motor doesn't run

Both fan motor and compressor are running but cooling is bad

Not cooling at all

Insufficient cooling

1) Fan

2) Fan motor

3) Capacitor

4) Fan motor circuit

Refrigerant system

1) Refrigerant system

2) Filter

3) Heat exchanger of condenser

¡ Blocked by others ¡ Disconnection or burned-out

¡ Repair ¡ Replace the fan motor

electric cord

¡ Failure malfunction of contact ¡ Disconnection of malfunction of

¡ Replace ¡ Check the circuit

contact

1) Refrigerant system is choked

2) Compressor failure

3) Leakage of refrigerant gas

1) Refrigerant system is choked

¡ Repair ¡ Repair ¡ Recharge refrigerant gas

¡ Check and repair refrigerant

system

2) Compressor failure

3) Leakage of refrigerant

4) Refrigerant charge is too high

¡ Clogged up with dust

1) Fin is clogged up with dust

2) The ventilation is not good

3) The unit is exposed to the sunlight

4) Other heat source is added in

¡ Replace ¡ Check part of gas Leakage and

repair

¡ Repair and recharge ¡ Clean the air filter ¡ Clean the unit ¡ Shade the unit from the

sunlight

¡ Remove the added heat source

the room

Vibration & Noise

Water leakage into room

Electric shock (Leakage of current)

1) Installation place

2) Fan

3) Fixing screws

4) Electric components

Installation condition

1) Each wiring

Insulation of components

¡ Installation of the unit is

¡ Install the unit perfectly

imperfectly done

1) Fan is contacted with

¡ Remove obstacles

obstacles

2) Fixing bolt

¡ Have a screw loose ¡ Electrical noise

¡ Mounting chassis does not

¡ Tighten the bolt ¡ Tighten the screw ¡ Exchange the components

¡ Make rear side of the unit lower

slant property to outside.

¡ The front is lower than rear

side

1) Insulation defect of wiring and lead wire

2) Leakgae of current due to the dew or rust

¡ Insulation defect

¡ Replace the defective parts ¡ Replace the defective parts ¡ Replace the defective parts

than the front

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7.HO W T O DISASSEMBLE

1 Before service 1. Stop the unit, remove the power cord from the receptacle.

of any part 2. Remove the Frame Grille from the main unit.

3. Remove the Cabinet from the main unit

2 Fan Motor 1. Remove Frame Grille.

- Remove 2 or 3 Knobs.

2. Remove Vent Lever.

3. Remove Auto Louver.

4. Remove wires.

5. Remove Control Box.

6. Remove Guide Top

- Remove 6 screws.

7. Remove Panel Housing.

- Remove 5 screws

8. Remove cover orifice

- Remove 4 screws

9. Remove clamp Motor.

- Remove 4 screws

10. Remove Panel Housing, Scroll, Fan Motor and Cond. Orifice assembly from Main unit.

11. Remove Blower Fan

- Remove 1 hex-nut

12. Remove Propeller Fan

- Remove 1 hex-nut

13. Remove Scroll.

14. Remove Panel Housing.

15. Remove Orifice Cond.

3 Control Box 1. Same as the procedure 1 to 5 in disassembling Fan Motor.

Page 11

8.REFRIGERANT CYCLE

Condenser

Propeller fan

Dryer

Capillary tube

Compressor

Accumulator

Blower

Evaporator

Blower fan

Page 12

9.EXPLODED DIA GRAM AND PAR TS LIST

§§

EXPLODED DIA GRAM (D W A-120CT/D WB-120CT/DW A-100CT)

Page 13

§§

PARTS LIST (DWA-120CT/D WB-120CT/D W A-100CT)

NO PART NAME

1 PAN BASE AS 3100000510 1 2 GROMMET 3108104AE0 3108100700 3 3 COMPRESSOR AS 3100030DE0 3100030CE0 3100032300 1 4 WASHER PLAIN 7400208411 3106001300 3 5 NUT LOCK 7392801211 3106001400 3 6 PAN DRAIN 3108100200 1 7 EVAPORATOR AS 3100007200 1 8 PLATE SCROLL 3104501000 1 9 BRACKET MOTOR 3100601500 1

10 FAN MOTOR 11 PANEL HOUSING 3104200800 1

12 SCROLL 3106600100 13 PLATE ORIFICE 3104500900 1 14 FAN PROPELLER 3101800400 1 15 NUT HEX (R) 3106000500 1 16 CONDENSER AS 3100007300 1 17 FAN BLOWER 3101800300 1 18 NUT HEX (L) 3106000400 1 19 CLAMP MOTOR 3101200500 2 20 COVER ORIFICE 3101401500 1 21 GUIDE TOP 3102500500 2

22 CONTROL AS 3100001900 1 22-1 BOX CONTROL 3100502300 1 22-2 CAPACITOR 3109500210 3109500510 3109501010 1 22-3 CLAMP CAPACITOR 3101200600 1 22-4 MOTOR SWING 3966310100 1 22-5 THERMOSTAT S/W 5SM0101600 1 22-6 TIMER 3109600200 3109600100 3109600200 1 22-7 ROTARY S/W 5S10405600 / 5S10405610 1 22-8 ROCKER S/W 5S20101600 1

23 TERMINAL GASKET 3102334AE0 3102300200 1

24 OVER LOAD PROTECT 3107938UE0 3107938DE0 3107900300 1

25 TERMINAL COVER 3101405AE0 3101403300 1

26 FLANGED NUT HEX 3108009AE0 3106001500 1

27 HOLDER V/BLADE 3103001600 1

28 DOOR VENT 3101700100 1

29 BRACKET V/BLADE 3100601600 1

30 CAM 3106700200 1

31 BLADE VERTICAL 3106500500 2

32 BARVER CONN 3106300600 1

33 GRILLE COND 3102401600 1

34 CABINET 3101100100 1

35 LOCK UNIT 3103800200 1

36 BLADE HOR1 3106500600 10 36-1 BLADE HOL2 3106500700 2

37 BAR HOL CON 3106300700 1

38 GRILLE FRAME 3102401200 1

39 KNOB 3103400100 1

40 GRILLE INSERT 3102401300 1

DWA-120CT DWB-120CT DWA-100CT

3108000720 3108000610 — 1 DMI

— — 3108001000 1 SUNG SHIN

PART CODE

QTY REMARK

Page 14

§§

EXPLODED DIA GRAM (D W A-120C/D WB-120C/DW A-100C/D WB-090C)

Page 15

NO PART NAME

1 PAN BASE AS 3100000510 1 2 GROMMET 3108104AE0 3 3 COMPRESSOR AS 3100030DE0 3100030CE0 3100030EE0 3100030FE0 1 4 WASHER PLAIN 7400208411 3 5 NUT LOCK 7392801211 3 6 PAN DRAIN 3108100200 1 7 EVAPORATOR AS 3100007200 1 8 PLATE SCROLL 3104501000 1 9 BRACKET MOTOR 3100601500 1

10 FAN MOTOR

11 PANEL HOUSING 3104200800 1

12 SCROLL 3106600100 1

13 PLATE ORIFICE 3104500900 1

14 FAN PROPELLER 3101800400 1

15 NUT HEX (L) 3106000400 1

16 CONDENSER AS 3100007300 1

17 FAN BLOWER 3101800300 1

18 NUT HEX (R) 3106000500 1

19 CLAMP MOTOR 3101200500 2

20 COVER ORIFICE 3101401500 1

21 GUIDE TOP 3102500500 2

22 CONTROL AS 3100001950 1 22-1 BOX CONTROL 3100502900 1

22-2 CAPACITOR 22-3 CLAMP CAPACITOR 310200600 1

22-4 MOTOR SWING 3966310100 1 22-5 THERMOSTAT S/W 5SM0101600 1 22-6 ROTARY S/W 5S10405600 1 22-7 ROCKER S/W 5S20101600 1

23 TERMINAL GASKET 3102334AE0 1

24 OVER LOAD PROTECT 3107938UE0 3107938DE0 3107938HE0 3107938JE0 1

25 TERMINAL COVER 3101405AE0 1

26 FLANGED NUT HEX 3108009AE0 1

27 HOLDER V/BLADE 3103001600 1

28 DOOR VENT 3101700100 1

29 BRACKET V/BLADE 3100601600 1

30 CAM 3106700200 1

31 BLADE VERTICAL 3106500500 2

32 BARVER CONN 3106300600 1

33 GRILLE COND 3102401600 1

34 CABINET 3101100100 1

35 LOCK UNIT 3103800200 1

36 BLADE HOR1 3106500600 10 36-1 BLADE HOL2 3106500700 2

37 BAR HOR CON 3106300700 1

38 GRILLE FROUNT 3102401700 1

39 KNOB 3103400100 1

40 FILTER PRE 3101901000 1

DWA-120C DWB-120C DWA-100C DWB-090C

3108000720 3108000610 3108001700 3108001600 1 DMI 3108001900 — 3108001000 3108000900 1 SUNG SHIN

3109500210 3109500510 3109500510 3109500510 1 DMI 3109501700 — 3109500810 3109500810 1 SUNG SHIN

PART CODE

QTY REMARK

Page 16

Service Manual

Window Type Room Air Conditioner

Model: DWA-120CT / DWB-120CT

D WA-100CT D WA-120C / DWB-120C D WA-100C / DWB-090C

DAEWOO ELECTRONICS CO., LTD.

Daewoo 120CT, 120C Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual