Daewoo DWB-180C-R User manual

Ser vice Manual

Window Type

Room Air Conditioner

Model: DWB-180C-R

DWB-240C-R

DWA-181C

DWA-240C-R

DAEWOO ELECTRONICS CO., LTD.

http://svc.dwe.co.kr May . 2001

S/M No. :180/240C-R

✔

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).

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 SHOOTING GUIDE ...............................................................8

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

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

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

11. EXPLODED DIAGRAM AND PARTS LIST ..................................................14

1. PRECAUTION

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 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.

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 30MΩby 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.

2. GENERAL SPECIFICATIONS

ITEM MODEL DWB-180C-R DWB-240C-R DWA-181C DWA-240C-R

Power source V/Hz AC 220~240V/50Hz AC 208~230V/60Hz

Cooling Capacity Btu/h 18,000 24,000 18,000 24,000

Kcal/h 4,530 6,050 4,530 6,050

Energy Efficiency Ratio Btu/wh 7.83 8.89 8.4 8.89

Kcal/wh 1.97 2.24 2.1 2.24

Dehumidification g/h 2,200 2,500 2,300 2,700

Electrical Data Power Input 2,300 2,700 2,150 2,700

Running Current 10.5 13.0 11.6 12.6

Compressor

Type Recipro Recipro Rotary Recipro

Model AWG5524EXC AWG5530EXC RCA180T001 AWG5525EXN

Capacitor 35µF/400VAC 45µF/400VAC 30µF/400VAC 35µF/400VAC

Model AM12DWD08 A2945CA010 IC12640DWWF6A A2951GA010

Fan Motor Capacitor 7.5µF/400VAC 7.5µF/400VAC 6µF/400VAC 7.5µF/400VAC

Indoor-Fan Blower-Fan

Outdoor-Fan Propeller-Fan

Refrigerant(R-22) Control Capillary

Charge Amount (g) 730 850 935 1030

Dimensions Unit (W x H x D) 660 x 430 x 705 (mm)

Packing (W x H x D)

710 x 525 x 757 (mm)

Weight Net Weight (Kg) 64 67 51.5 66

Gross Weight (kg) 69 72 56.0 71

3.NAMES OF MAJOR COMPONENTS

NO PART NAME

1 AIR FILTER

2 GRILL FRONT

3 CABINET

4 BLADE VERTICAL

5 KNOB THERMOSTAT

6 KNOB SELECTOR

NO PART NAME

7 BLADE HORIZONTAL

8 AIR VENT

9 AIR INTAKE

10 AIR DISCHARGE

11 AUTO LOUVER SWITCH

1256

4. FUNCTION OF MAIN COMPONENTS

1. ROTARY SWITCH (SELECTOR)

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 six positions.

The function of the six 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.)

MED COOL: This position provide the medium air flow for cooling

dehumidifying and dust removing operations

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 (TEMPERATURE CONTROL)

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. MOTOR

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

4. FAN

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.

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 AROUND 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 two-

prong wall receptacle is encountered, the customer is required to contact a qualified electrician and have the two-

prong 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 be a UL listed 3-wire

grounding type appliance extension cord rated has a 3-blade grounding plug and a 3-slot receptacle that will plug into

appliance. The marked rating of the extension cord should be AWG #12 or more.

5. DRAIN HOLE AND WATER 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.

6. CARE AND MAINTENANCE

1. AIR FILTER

Clean the air filter, which removes dust inside the room.

It should be washed at least once every week during operation.

1. Remove the Air Filter from the front grill by pulling up.

2. Clean Air Filter with a vacuum cleaner or lukewarm, soapy water.

3. Shake it when clean to remove moisture completely. Replace it.

2. CLEANING THE AIR CONDITIONER

1. At least once a year, remove cabinet and thoroughly clean air conditioner. Have the unit inspected by an authorized

servicer to ensure unit is functioning properly.

2. Wash air conditioner with lukewarm, soapy water as needed. Rinse and dry thoroughly.

3. If using concentrated liquid detergent, dilute in warm water first.

4. Front grill may be wiped off with a cloth dampened in a mild detergent solution.

5. Cabinet may be washed with mild soap or detergent and lukewarm water, then polished with liquid wax for

appliances.

6. Condenser and Evaporator coils should be cleaned at the beginning of each cooling season. Use a soft brush or

vacuum cleaner to clean them, making sure that the Condenser and Evaporator coils are not damaged.

7. Do not use abrasive cleaners. These items scratch, crack and discolor surfaces.

7. TROUBLE SHOOTING GUIDE

TROUBLE 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

2. Compressor

3. Frequent start and

stop

1) Power plug

2) Circuit breaker

1) receptacle

2) Operation switch

3) Cord or lead wire to

the switch

1) Compressor

2) Thermostat

3) Selector switch

4) O.L.P

5) Capacitor

1) Electricity

2) Room temperature

and outside

temperature

3) Compressor

4) O.L.P

5) Capacitor

1) Thermostat

2) Capacitor

3) O.L.P

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 proper

setting

1) Turn over

Lack of capacity

Disconnection

1) The voltage exceeded allowed

range

2) Capacity of wire is not

sufficient

Extremely high

Burned-out

Malfunction

Lack of capacity

Malfunction

Lack of capacity

Turn over

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 swtting

Wait until return it.

Replace

Repair

Consult your electric company

Check the capacity of wire

Ventilate well and remove the

heat source

Replace

Wait until return it.

TROUBLE SITUATION ANALYSIS CAUSE REMEDY

The compressor runs

but the motor doesn't

run

Both fan motor and

compressor are

running but cooling is

bad

Vibration & Noise

Water leakage into

room

Electric shock

(Leakage of current)

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

1) Installation place

2) Fan

3) Fixing screws

4) Electric

components

Installation condition

Insulation of

components

Blocked by others

Disconnection or burned-out

electric cord

Failure malfunction of contact

Disconnection of malfunction of

contact

1) Refrigerant system is choked

2) Compressor failure

3) Leakage of refrigerant gas

1) Refrigerant system is choked

2) Compressor failure

3) Leakage of refrigerant gas

4) Refrigerant charge is too high

Clogged up with dust

1) Fin is cogged up with dust

2) The ventilation is not good

3) The unit is exposed to the

sunlight

4) Other heat source is added in

the room

Installation of the unit is

imperfectly done

1) Fan is contacted with

obstacles

2) Fixing bolt

Have a screw loose

Electrical noise

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

Repair

Replace the fan motor

Replace

Check the circuit

Repair

Recharge refrigerant gas

Check and repair refrigerant

system

Replace

Check a part of Leakage and

repair

Repair and recharge

Clean the air fiter

Clean the unit

Shade the unit from the

sunlight

Remove the added heat

source

Install the unit perfectly

Remove obstacles

Tighten the bolt

Tighten the screw

Exchange the components

Make rear side of the unit

lower than the front

Check the unit's Leakage of

current.

Replace the defective parts or

components

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