Daewoo DWC-052C, DWB-052C Service manual

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TABLE OF CONTENTS

1. PRECAUTION...............................................................................................................................................2

2. GENERAL SPECIFICATIONS.....................................................................................................................3

3. NAMES OF MAJOR COMPONENTS ........................................................................................................4

4. FUNCTION OF MAIN COMPONENTS.......................................................................................................5

5. GENERAL INFORMATIONS.......................................................................................................................6

6. CARE AND MAINTENANCE.......................................................................................................................7

7. TROUBLE SHOO TING GUIDE...................................................................................................................8

8. HOW TO DISASSEMBLE..........................................................................................................................10

9. WIRING DIAGRAM.....................................................................................................................................11

10. REFRIGERANT CYCLE ..........................................................................................................................12

11. EXPLODED DIAGRAM AND PARTS LIST...........................................................................................13

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1. PRECA UTION

Please observe the following instructions.

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 una v oidab l y while the unit is connected with po wer sour ce, 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.
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 wire, after cutting the middle of wire.

It may cause a fire and trouble.

7. Checking the insulation resistance.

After you complete the assembly of 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
resistance.

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. GENERAL SPECIFICATIONS

ITEM

MODEL

DWC-052C DWB-052C

Function Cooling only
Power source AC 115V / 60Hz AC 220-240V / 50Hz

Cooling Capacity

Btu/h 5,340 Btu/h 5,350 Btu/h
Kcal/h 1,346 Kcal/h 1,348 Kcal/h

Energy Efficiency Ratio

Btu/Wh 10.2 Btu/Wh 10.3 Btu/Wh
Kcal/Wh 2.57 Kcal/Wh 2.59 Kcal/Wh

Dehumidification

Pts/h 1.73 Pts/h 1.46 Pts/h
g/h 787 g/h 662 g/h

Electrical Data

Power Input (W) 525 W 520 W
Running Current (A) 4.6 A 2.4 A

Compressor

Type Rotary

Model RM5455GQ87 KH-091VFHC
Capacitor 40µF / 370VAC 13µF / 400VAC
Model A9520KC030 A9520CC020

Fan Motor

Capacitor 4µF / 370VAC 2µF / 400VAC
Indoor-Fan Blower-Fan
Outdoor-Fan Propeller-Fan

Refrigerant(R-22)

Control Capillary
Charge Amount(g) 13.3oz (380g) 14.7oz (420g)

Dimensions

Unit(W x H x D)
PACKING(W x H x D)

Weight

Net Weight 45.4 lbs (20.6Kg) 46.3 lbs (21Kg)
Gross Weight 48.5 lbs (22kg) 48.5 lbs (22kg)

17.3(W) x 12.3(H) x 15.2(D) inch (440(W ) x 313(H) x 385(D) mm)

19.2(W) x 15.4(H) x 17.4(D) inch (488(W ) x 390(H) x 443(D) mm)

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3.NAMES OF MAJOR COMPONENTS

NO PART NAME

1 CABINET
2 BLADE VERTICAL
3 COOL AIR DISCHARGE
4 GRILLE FRONT
5 KNOB THERMOSTAT
6 KNOB SELECTOR

NO PART NAME

7 AIR INTAKE
8 AIR FILTER

9 CONTROL PANEL
10 PLATE WINDOW TOP
11 FRAME WINDOW KIT
12 SHUTTER WINDOW

2
3

8

6

5

1

4

7

0

q

w

9

2
3

8

65

1

4

7

9

* Window kits are optional.

(Item No. 10, 11, 12)

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4. FUNCTION OF MAIN COMPONENTS

1. ROTARY SWITCH (SELECT OR)

Please refer to the part of selector in the chapter 9 (Wiring Diagram).
The rotary switch (selector) controls the fan motor’s rotation speed, and has five positions.
The function of the five position is as follow.

• 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.)

• LOW COOL: This position provides the minimum air flow for quiet
cooling, dehumidifying operations.
(Use this position on suitable for night-time.)

• HIGH FAN: This position provides the maximum air fiow alone fan

operation without cooling operation.

• LOW FAN: This position provides the minimum air flow air flow alone

fan operation without cooling operation.

2. THERMOSTAT (TEMPERA TURE CONTR OL)

• The Thermostat automatically starts and stops operation in order to keep

the room temperature at a proper level, and this results in efficient use of
power and economical cooling.

• Turn clockwise for a cooler room temperature.

• Turn counter-clockwise for a warmer room temperature.

3. MOT OR

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

4. F AN

• BLOWER FAN: The Blower draws hot air from the room through the Evaporator and then discharges it back into the
cool air. It circulates the room air.

• PROPELLER FAN: The propeller draws outdoor air through louvering and cools Condenser, and then blows the hot air

out.

5. CAPACITOR

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

6. ACCUMULATOR

The Accumulator blocks the unflow of liquid refrigerant and impurities into the Compressor.

Selector

Off

Low

Cool

Low

Fan

High
Cool

High

Fan

Thermostat

Cooler

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5. GENERAL INFORMATIONS

1. CHANGING AIR FLOW DIRECTION

Air flow deflectors divert air from center flow to left or right.
Adjust deflectors for desired air flow pattern.

2. AIR FLOW AR OUND UNIT

Check in door grill and outdoor louvers for air flow obstructions. Do not block air flow to and from unit. The outdoor coil
should be checked and periodically cleaned for debris that may collect and block unit air flow. If air flow is obstructed
or deflected back into unit, the compressor may cycle on and off rapidly, causing early compressor failure.

3. Electrical Grounding Instructions.

This appliance is equipped with a three-prong(grounding) plug for protection against possible shock hazards. If a two­prong wall receptacle is encountered, the customer is required to contact a qualified electrician and have the two­prong wall receptacle replaced with a properly grounded three-prong wall receptacle in accordance with the National
Electrical Code.

4. USE OF EXTENSION CORDS

Because of potential safety hazards under certain conditions we strongly recommend against the use of an extension
cord. However, if you still elect to use an extension cord, it is absolutely necessary that it is earthed and the marked
rating of the extension cord should be 250V 10A or more for Model DWB-052C.
Also, it is absolutely necessary that it be a UL listed 3-wire grounding type appliance extension cord rated has a 3­blade grounding and 3-slot receptacle that will plug into appliance. The marked rating of the extension cord should be
125V 13A or more, for Model DWC-052C.

5. DRAIN HOLE AND W ATER DRIPPING OUTSIDE

Locate drain hole at the rear of unit. Water in base pan is picked up by the fan blade and thrown onto the warm
outdoor coil where it evaporates. The air conditioner must be installed level or tited or slightly to the outside for proper
water disposal. On exceptionally hot and humid days the air conditioner may permit excess water to pass thru rear
drain hole or overflow. This should be considered normal.