Daewoo DWB-180CH-R, DWB-240CH-R Service Manual

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 .................................................................7

6. CARE AND MAINTENANCE .................................................................9

7. ELECTRICAL REQUIREMENTS ............................................................10

8. DESCRIPTION OF FUNCTIONS ............................................................11

9. WIRING DIAGRAM.........................................................................12

10. REFRIGERANT CYCLE ...................................................................13

11. PCB DRIVING DESCRIPTION .............................................................14

12. TROUBLE SHOO TING GUIDE.............................................................16

13. HOW TO DISASSEMBLE..................................................................19

14. EXPLODED DIAGRAM AND PARTS LIST ..................................................20

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.

2. GENERAL SPECIFICATIONS

MODEL

ITEM

Power Source V/Hz AC 220-240V/50Hz

Capacity (Cooling & Heating)

Dehumidification L/h 2.1

Electrical Data Power Input(W)

Running Current(A)

Compressor

Fan Motor

Btu/h 18,000 24,000 Kcal/h 4,530 6,050

Cooling 2,240 2,750 Heating 1,880 2,350 Cooling 10.4 13.1 Heating 8.8 11.4 Type Recipro Model AWG-5524EXC AWG-5530EXC Capacitor 35µF/400VAC 45µF/400VAC Overload Protector Internal Type Model AM12DWD08 A2945CA011 Capacitor 7.5µF / AC 400V Indoor-Fan Blower Fan

DWB-180CH-R DWB-240CH-R

Outdoor-Fan Propeller Fan Control Capillary

Refrigerant(R-22)

Capillary Tube ID ø1.4 x L800 x 2 ID ø 1.6 x L800 x 2 Charge Amount (g) 1,230g 1,030g

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

Packing (W x H x D) 711 x 525 x 757 (mm)

Weight Net Weight (Kg) 65.0 66.0

Gross Weight (kg) 69.0 70.0

3.NAMES OF MAJOR COMPONENTS

NO PART NAME

1 AIR FILTER 2 GRILLE 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 SWING SWITCH 12 HEATER LAMP

4. FUNCTION OF MAIN COMPONENTS

NOTE

• ECONOMICAL AND COMFORTABLE USE

1. Properly control the room temperature.

2. Avoid being exposed to direct sunlight.

3. Prevent the wind from entering the room.

• FAN & COOLING CONTROL

The Fan Control Selector Switch has six positions. Choose one of the speed settings by rotating the fan control Selector Switch to the appropriate position

CAUTION

When the air conditioner has been performing its cooling operation and is turned “OFF” or set to the ‘FAN” position, wait at least 3 minutes before resetting to the cooling operation.

OFF Select this setting for stop all operation of air conditioner FAN Select this setting for low speed air circulation without cooling and

heating.

LOW COOL Select this setting for cooling operation with LOW FAN.

LOW HEAT

SELECTOR

OFF

FANFAN

LOW

COOL

HIGH COOL Select this setting for cooling operation with HIGH FAN.

HIGH HEAT

WARMER COOLER

HIGH

COOL

LOW HEAT Select this setting for Heating operation with LOW FAN. HIGH HEAT Select this setting for Heating operation with HIGH FAN.

• TEMPERATURE CONTROL

Choose a temperature settings by rotating the knob of thermostat to the appropriate position

THERMOSTAT

• 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.

WARMER COOLER

• HEATER LAMP

When the unit sets heating operation condition, the red lamp is lighted. When the frost settles on the heat exchanger of the outside, defrosting is made automatically and the red lamp is turned off. The unit may give a hiss and the fan motor stops for 1 to 10 minutes. This should not be regarded as a problem. After defrosting, the heating operation begins again.

• MOTOR

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

CAUTION

In order to After Service convenience that the motor is common parts with DWB-180(240)C-R model, (This part is not use of medium speed function so that the lead wire’s receptacle is taping) Because of the motor supplies of having a lead wire’s receptacle when Pump model’s After Service that it is necessary to taping of lead-wire.

• FAN MOTOR

– 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.

* Heating condition is in opposition.

• CAPACITOR

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

• ACCUMULATOR

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

5. GENERAL INFORMATIONS

DEFLECCIÓN AUTOMÁTICA

ENCEN./APAG.

The rear side of the unit

Drain Cap

Door Vent

• CHANGING AIR FLOW DIRECTION

Air flow deflectors divert air from center flow to left or right and up or down. Adjust deflectors for desired air flow pattern. AUTO SWING

AUTO SWING

ON/OFF

• AUTO SWING

The switch of auto swing operating is linked with the power source. ON: Air swing is operated while SELECTOR knob is set the COOL/HEAT or FAN position. OFF: Stop the operation of air swing.

• AIR FLOW AR OUND UNIT

When the auto louver switch is turned to “ON” position, the 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.

Check indoor grille 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.

• DRAIN HOLE AND W ATER DRIPPING OUTSIDE

Locate drain hole at the rear or on the bottom 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 tilted 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.

• HOW TO INSTALL THE DRAIN CAP

This drain cap is not attached the rear the unit at the factory. If you want to install the drain cap, please install the drain cap like Fig. of the drain cap. There are two kinds of method to install the drain cap. The first method is that the shape of hole like It is good for the household. The second method is that the shape of hole is like It is good for the shop.

• DOOR VENT

The door vent for the room air ventilation is lever type. If the door vent lever moves to the left, then close the vent and moves to the rght, then open the vent.

CLOSE VENT → OPEN

→

• HOW TO ATTACH CABINET DRAIN

CABINET

SCREW

CABINET

DRAIN

DRAIN HOSE

The air conditioner employs a proper drain method whereby the condensed water (moisture removed from the air) is drained to the outside. In very humid weather, excessive condensate water removed from the air may cause some water to collect. To remove this excess water you can install the cabinet drain as detailed below.

1. Take the cabinet drain which is located in the upper styrofoam pad.

2. Remove the hole rubber from the base pan bottom hole.

3. Install the cabinet drain to the left corner of the cabinet with 3 screws.

4. Connect the drain hose to the outlet located at the bottom of the cabinet drain. You can purchase the drain hose or tubing locally to satisfy your particular needs. (Drain hose is not supplied)

6. CARE AND MAINTENANCE

CAUTION

To avoid death of personal injury due to electrical shock, turn fan control OFF and unplug power cord before cleaning or performing maintenance. After cleaning or performing maintenance, reconnect power.

• 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 grille 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.

NOTE

A dirty Air Filter reduces air flow and the cooling capacity. Do not operate unit without Air Filter.

• CLEANING THE AIR CONDITIONER

1. At least once a year, remove cabinet and thoroughly clean air conditioner.

Have the unit inspected by an authorized service man to ensure unit is functioning properly.

2. Wash air conditioner with lukewarm, soapy water as needed.

Rinse and dry thoroghly.

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

4. Front grille 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 scrach, crack and discolor surfaces.

NOTE

To assure continued peak efficiency, condenser coils (weather side of unit) should be checked periodically and cleaned if clogged with soot or dirt from the atmosphere.

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