Daewoo DSB-070, DSB-091LH1, DSB-091L, DSB-121L Service Manual

5 (1)

Contents

CONTENTS

 

1.

Specifications..........................................................................................................

2

2.

Outline and Dimensions .........................................................................................

5

3.

Operation.................................................................................................................

9

4.

Wiring Diagram.....................................................................................................

23

5.

Refrigerant Cycle..................................................................................................

25

6.

Control Block Diagram .........................................................................................

26

7.

Electric Circuit Diagram........................................................................................

27

8.

Trouble Shooting...................................................................................................

29

9.

Key Components of Electronic Circuit.................................................................

48

10.

Disassembly Instructions .....................................................................................

51

 

1) Indoor Unit ........................................................................................................

51

 

2) Outdoor Unit .....................................................................................................

53

 

3) Exploded Diagram (Indoor Unit)......................................................................

55

 

4) Exploded Diagram (Outdoor Unit)...................................................................

60

 

5) Control Box Assembly......................................................................................

66

1. SPECIFICATIONS

¡ DSB-070LH

 

 

 

 

 

 

MODEL

 

DSB-070LH

ITEM

 

 

 

 

 

 

 

Function

 

 

Cooling & Heating

Class

 

 

 

T

Power

 

 

AC 220~ 240V/ 50Hz

Capacity

 

W

 

2,051/2,051

 

 

Btu/h

 

7,000/7,000

Dehumidification

 

l/h

 

0.89

 

Running Current

A

 

3/3.2

Electrical

Power Input

W

 

676/693

Data

 

 

 

 

 

 

Starting Current

A

 

18

 

Type

 

 

Rotary

Compressor

Model

 

QB 134PL 12B

 

Capacitor

 

25µF/400VAC

 

 

 

Indoor Unit

Outdoor Unit

Fan

Type

 

Cross flow fan

Propeller fan

 

 

 

 

Motor

Capacitor

 

1.0µF 400VAC

1.8µF 400V

 

 

 

Motor Model Number

IC-8417DWKF5A

IC-9625DWLF5A

Refrigerant

Control

 

 

Capillary

 

 

 

 

(R-22)

Charge Q'ty

g

 

900

 

 

Connection

Type

 

 

Flare

 

 

 

 

 

OD (Liquid/Suction)

in(mm)

1/4 (6.35)

1/2 (12.7)

Dimensions (W x H x D)

mm

750 x 245 x 174

654 x 549 x 256

Net Weight

 

kg

7.0

34

 

 

 

2

 

¡ DSB-091LH

 

 

 

 

 

 

MODEL

 

DSB-091LH

ITEM

 

 

 

 

 

 

 

Function

 

 

Cooling & Heating

Class

 

 

 

T

Power

 

 

AC 220~240V/ 50Hz

Capacity

 

W

 

2,637/2,637

 

 

Btu/h

 

9,000/9,000

Dehumidification

 

l/h

 

1.15

 

Running Current

A

 

4.0/4.2

Electrical

Power Input

W

 

910/940

Data

 

 

 

 

 

 

Starting Current

A

 

24

 

Type

 

 

Rotary

Compressor

Model

 

RBB100A001

QK 185PN13B

 

Capacitor

 

30µF / 450VAC

35µF / 400VAC

 

 

 

Indoor Unit

Outdoor Unit

Fan

Type

 

Cross flow fan

Propeller fan

 

 

 

 

Motor

Capacitor

 

1.0µF 400VAC

1.8µF 400V

 

 

 

Motor Model Number

IC-8417DWKF5A

IC-9630DWLF5A

Refrigerant

Control

 

 

Capillary

 

 

 

 

(R-22)

Charge Q'ty

g

 

1,150

 

 

Connection

Type

 

 

Flare

 

 

 

 

 

OD (Liquid/Suction)

in(mm)

1/4 (6.35)

1/2 (12.7)

Dimensions (W x H x D)

mm

750 x 245 x 174

654 x 549 x 256

Net Weight

 

kg

7.0

34

 

 

 

3

 

¡ DSB-121LH

 

 

 

 

 

 

MODEL

 

DSB-121LH

ITEM

 

 

 

 

 

 

 

Function

 

 

Cooling & Heating

Class

 

 

 

T

Power

 

 

AC 220~240V/ 50Hz

Capacity

 

W

 

3,654/3,946

 

 

Btu/h

12,500/13,500

Dehumidification

 

l/h

 

1.6

 

Running Current

A

 

7.0/6.5

Electrical

Power Input

W

 

1,500/1,410

Data

 

 

 

 

 

 

Starting Current

A

 

37

 

Type

 

 

Rotary

Compressor

Model

 

RCB 150A001

 

Capacitor

 

35µF/ 400VAC

 

Division

 

Indoor Unit

Outdoor Unit

Fan

Type

 

Cross flow fan

Propeller fan

 

 

 

 

Motor

Capacitor

 

1.0µF 400VAC

3.5µF 400VAC

 

 

 

Motor Model Number

IC-8428DWKG7C

IC-9430DWLC5B

Refrigerant

Control

 

 

Capillary

 

 

 

 

(R-22)

Charge Q'ty

g

 

1,060

 

 

Connection

Type

 

 

Flare

 

 

 

 

 

OD (Liquid/Suction)

in(mm)

1/4 (6.35)

1/2 (12.7)

Dimensions (W x H x D)

mm

925 x 285 x 194

666 x 552 x 264(Before)

 

 

 

 

 

654 x 549 x 256(After)

Net Weight

 

kg

9.7

34

 

 

 

4

 

Daewoo DSB-070, DSB-091LH1, DSB-091L, DSB-121L Service Manual

OUTLINE AND DIMENSIONS

INDOOR UNIT

2.

1

¡ DSB-070LH/DSB-091LH

Plate Mounting

Connecting Pipe

750

REMOCON

 

5

Grille Insert

Frame Grille

Body

Plate Mounting

245

174

¡ DSB-121LH

Connecting Pipe

406

Plate Mounting

REMOCON

925

Plate Mounting

Body

Frame Grille

Grille Insert

285

Filter - L

Filter - R

194

 

 

 

 

6

OUTDOOR UNIT

DSB-070LH/DSB-091LH/DSB-121LH(After)

 

¡

Inlet

 

 

Cabinet Side

 

Inlet

 

256

Guide Support

 

Panel Top

 

Outlet

Foot

 

 

Handle

 

 

Cabinet Front

 

 

 

 

7

549

Outlet

654

Service Valve

 

Foot Cushion

¡ DSB-121LH(Before)

Inlet

Cushion Foot

666

Valve Service

Outlet

AIR

Inlet

Front Cabinet

 

 

Foot

264

334

Handle

552

572 CabinetSide

Top Panel Back Cabinet

8

3. OPERATION

PARTS OF NAME AND FUNCTION

¡ DSB-070LH/DSB-091LH

Indoor Unit

 

 

 

 

 

 

 

 

 

 

 

Deodorizing Filter

 

 

 

 

 

 

 

 

 

 

 

Electrostatic Filter

 

 

 

 

 

 

 

 

(option)

 

 

 

 

 

 

 

 

(option)

 

 

 

 

 

 

 

 

 

 

 

 

 

Air Inlet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan Direction

Antibacterial (Up, Down)

Filter

Lamp

Remote

Controller

Receiver

Air Outlet

Power Plug

Remote Controller

9

¡ DSB-121LH

Indoor Unit

Electrostatic Filter

 

 

 

 

Air Inlet

 

 

Deodorizing Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Antibacterial

 

Air Outlet

Fan Direction

 

Filter

 

 

(Up, Down)

Power Plug

 

Remote

 

Controller

 

 

 

 

Receiver

Remote Controller

Lamp

 

10

¡ DSB-070LH/DSB-091LH

Indoor Unit Display

Switch Panel

Remote Control Signal Receiver

This place is the part to receive the signal if it receive the signal, you can hear the signal “beep. “beep. beep.”

ON (Red)

 

 

 

 

 

Timer (Yellow)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lights when the

 

 

 

 

Lights during the time

operation is going on.

 

 

 

 

reservation mode.

Air clean (Green)

 

 

 

 

 

Quick (Red)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EMR. REMOCON

There is a switch panel at inside of Front

Panel. At the time of operating, open the Front Panel.

Emergency switch can be used when the remote controller is lost or Testing.

Remote switch is usually used by remote controller.

11

¡ DSB-121LH

Indoor Unit Display

Remote Control Signal Receiver

This place is the part to receive the signal if it receive the signal, you can hear the signal "beep, beep".

ON AIR CLEAN QUICK TIMER

 

 

 

 

 

 

 

ON (Red)

 

 

 

Timer (Yellow)

Lights when the

 

 

 

Lights during the time

operation is

 

 

 

reservation mode.

going on.

 

 

 

 

 

 

 

 

 

 

 

 

Air clean (Green)

 

 

Quick(Red)

 

 

 

 

 

 

 

 

 

Switch Panel

EMERGENCY REMOTE

§There is a switch panel at inside of Front Panel. At the time of operating, open the Front Panel.

Emergency switch can be used when the remote controller is lost or testing.

Remote switch is usally used by Remote

Controller.

12

¡ DSB-070LH/DSB-091LH/DSB-121LH(After)

Outdoor Unit

Air Inlet (Side Back)

Connection Wire

Connecting Pipe

Drain Hose

Air Outlet

13

¡ DSB-121LH(Before)

Outdoor Unit

Air Inlet (side Back)

AIR

Air Outlet

Connection

Wire

Drain Hose

Connecting

Pipe

NOTE:

How to remove Top Panel

1.Loosen the screw at left and right side.

2.Push the three parts op Front and Back sides like figure orderly.

3.Unhook the locking parts of Top Panel.

The front locking parts

The back locking parts

FRONT SIDE

BACK SIDE

14

REMOTE CONTROLLER

¡ DSB-070LH/DSB-091LH/DSB-121LH

Name of Each Button

AUTO

Display

Displays information pertaining to unit.

ON/OFF Button

Press to turn the unit on or off.

FAN SPEED Button

Press to select the fan speed (High "", Middle "",

Low "").

MODE Button

Press to cycle through the modes (Auto/Quick/Cooling/Fan/Dry)

SLEEP Button

Press to set the unit for the sleep mode.

TIMER ON/OFF Button

Press to set the unit of or on time. (0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24hr)

TIMER ENTER/CANCEL Button

Press to enter a timer setting or to cancel timer setting

 

 

 

TEMPERATURE Buttons

 

 

 

Press to raise or lower

 

 

 

the desired temperature.

MODE

FAN SPEED

FAN DIR.

FAN DIR.

Button

Press to select up/down

 

 

 

 

 

 

direction for fan.

SLEEP

 

 

 

 

TIMER

 

 

 

ON/OFF

ENTER/

TURBO/MILD

 

 

 

CANCEL

 

TURBO/MILD

 

 

 

Press to be colder the unit.

COVER

Slide down to access most of the remote buttons. Slide down further to

REMOTE CONTROLLER access the battery

compartment.

15

REMOTE CONTROLLER DISPLAY

¡ DSB-070LH/DSB-091LH/DSB-121LH

MODE Indicators (Auto/Quick/Cool/Fan/Dehumidifier/Heat)

Lights to indicate the mode selected.

AUTO

FAN Indicators

Lights to indicate the fan speed.

NATURAL Indicator

Lights to indicate the speeds simulating a loreeze.

FAN DIRECTION Indicators

Lights to indicate the fan direction.

TIMER Indicators (Include sleep)

Lights to indicate the timer function mode.

TEMPERATURE & RESERVATION TIME lndicator

Lights to indicate the temperature or time.

Replacing Batteries

1

Open the cover after

2

Put the drycell by §]§^

pressing the arrow

direction.

 

direction and pulling out.

 

 

 

 

 

+

 

 

 

+

3

Close the cover after

pushing into arrow

direction.

REMOTE

REMOTE CONTROLLER

CONTROLLER

16

DESCRIPTION OF FUNCTIONS

OFF-Timer

If you set time in OFF-Timer Mode, the unit will stop at the set time.

Unit ON

ON

Unit OFF

OFF

SET Time

HOUR

ON-Timer

If you set time in ON-Timer Mode, the unit will run at the set time.

Unit ON

 

ON

 

Unit OFF

 

OFF

 

SET Time

HOUR

Control of Room Temperature

(1)Range of setting temperature: 18~32°C

(2)Setting temperature: Operating temperature of compressor

 

 

 

 

COMP (ON)

 

 

 

 

 

 

COMP (OFF)

 

 

COMP (OFF)

 

 

 

 

 

COMP (ON)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-1°C

0°C

(RT-DT)

 

 

-1°C

0°C

(RT-DT)

 

 

 

 

(COOLING)

 

 

 

 

 

 

HEATING

 

 

*RT: ROOM TEMPERATURE DT: DESIRED TEMPERATURE

(3)During the time of test operating, Fan (Indoor, Outdoor) and Compressor is running regardless of room temperature.

Buzzer

If the Indoor Unit Display receive the signal of Remote Controller, you can hear the signal "beep –" or "beep, beep".

(1)In the case of receiving ON/OFF signal-"beep" "beep"

(2)And so on-"beep"

17

FanSpeed (Indoor Unit)

(1)Motor speed (Super high speed, high speed, normal speed, low speed, ultra low speed).

(2)Remote controller setting fan speed. (Auto, L, M, H, Natural)

(3)Relation of operating mode between fan speed. (legned: X-no relation)

 

FAN ONLY

COOL

DEHUMI-

AUTO

QUICK

HEAT

 

DIFICATION

 

 

 

 

 

 

 

 

 

 

 

 

 

H

H

H

L

H

H

H

M

M

M

L

M

H

M

L

L

L

L

L

H

L

Auto

Auto

Auto

L

Auto

H

Auto

Natural

Natural

Natural

L

Natural

H

Natural

 

 

 

 

 

 

 

(4) Automatic Operation

If the unit is set in 'AUTO' mode, the unit operates automatically according to the room temperature to keep the room temperature comfortable.

(COOLING)

H

M

L

 

 

 

 

 

 

 

0°C

1°C

2°C (R.T-D.T)

 

(D.T)

 

 

 

 

 

H

(HEATING)

M

 

L

 

 

 

 

 

 

 

 

 

 

 

0

1

2

3

4

5°C (DT-RT)

18

Sleep Mode

(1)When you are going to sleep, select sleep switch and the unit controls the room to the desired temperature. (The unit will not operate after 4 hour)

(2)For changing the temperature.

DT

 

 

 

 

 

 

 

 

DT

 

 

 

 

 

 

 

 

 

 

 

 

 

+0.5°C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+0.5°C

 

 

 

 

 

 

°

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–0.5 C

 

 

 

 

 

 

 

 

+0.5°C

 

 

 

 

 

 

 

 

 

–0.5°C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–0.5°C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOUR

 

 

 

 

 

 

 

HOUR

0

0.5

1.0

0

0.5

1.0

 

 

 

(COOLING CYCLE)

 

 

 

 

 

(HEATING CYCLE)

 

 

(3) To cancel sleep mode, press the SLEEP button again or press the MODE button once.: the SLEEP indicator will disappear in the display.

Emergency Operation

(1)When the remote controller is lost, damaged or the battery is discharged, the Emergency operation can be used to run the unit.

(2)The setting conditions of Emergency operation are as follows.

Operation mode: AUTO

Preset temperature: 26°C

Fan speed: LOW

¡You cannot operate with remote controller.

FrostPrevention of Indoor Unit

When the unit operates at low ambient temperature, frost may appear on the Evaporator. When the indoor coil temperature is lower than 0°C at the end of 10 minutes of continuous compressor operation from the start, the microcomputer of the unit stops the compressor to protect the unit from the frost. The control procedure for indoor coil freeze protection.

1)The compressor and outdoor fan turn off.

2)Indoor fan operates according to user set speed.

3)The normal operation returns when the indoor coil temperature is higher than 7°C or equal to 7°C.

ON

Compressor and

OFF

Outdoor Fan

Set Speed

OFF

Indoor Fan

0°C 7°C

(Indoor coil temperature)

19

3min. Time Delay of Compressor

In normal operation, there is a time delay of three minutes between turn off and turning back on including initial power up.

5Seconds Time Delay of Indoor Fan Motor

Wnen the speed of indoor fan motor changes, there is a time delay of 5 seconds at each speed step.

AutoMode (I)

(1)In Auto Mode (I)

After the indoor fan is operated for 20 seconds in the Auto Mode (I), the unit will operate automatically by selecting operating Mode according to the room temperature

 

 

(RT: Room temperature)

 

 

 

ROOM TEMPERATURE

OPERATING MODE

FLAP POSITION

 

 

 

28°C §ZRT

Cooling

Cooling Position

 

 

 

22°C < RT < 28°C

Dehumidifier

Cooling Position

 

 

 

RT §Z22°C

Heating

Heating Position

 

 

 

(2)Selecting Operating Mode Again

Room temperature meets desired temperature and the compressor stops running over 30 minutes, then the unit selects operating Mode again.

20

Dehumidification Mode

!Desired temperature < Room temperature Outdoor Fan, Compressor : ON

Indoor Fan : Low speed

@Desired temperature ¡ˆRoom temperature Compressor : 3 min/ON, 5 min/OFF

Indoor Fan : 3 min 30 second/ON, 4 min 30 second/OFF Fan Speed : low speed

#Room temperature ¡´18°C Compressor : OFF

Indoor Fan : 1 min/ON, 7 min/OFF Fan speed : Low speed

AirDischarge Direction(only remocon operation)

The air discharge direction procedure is below.

Fixed Up/Down Fixed

Up/Down

COOLING POSITION

Quick Mode(Powerful Cooling & Heating)

HEATING POSITION

1) Cooling Mode

ƒNWhen the room temperature is higher than 22°C

!Fan Speed: Super high speed @ Air discharge direction: Fixed

# Set temperature: 18°C (Fixed) $ Compressor and Outdoor Fan

The air discharge direction procedure is below

Fixed Up/Down

Up/Down Fixed

ƒRThe option is LEFT/RIGHT direction.

1) Heating Mode

ƒNWhen the room temperature is higher than 22°C

!Fan Speed: Super high speed @ Air discharge direction: Fixed

# Set temperature: 18°C (Fixed) $ Compressor and Outdoor Fan

The air discharge direction procedure is below

Fixed Up/Down

Up/Down Fixed

ƒRThe option is LEFT/RIGHT direction.

 

 

 

 

 

ON

 

 

 

 

 

 

 

ON

 

OFF

 

 

 

 

(Room temperature-18˚C)

 

 

OFF

 

 

 

 

 

(Room temperature-32˚C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-1

0

1

 

-1

0

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

Self-Diagnostic Function

The control will contain diagnostic test to verify the integrity of the system.

(1)Error Code Display Pattern

!ON LAMP: ON (Red) LED ON/OFF @ Error Code

# Only Emergency mode

ERROR CODE

 

 

 

 

DISPLAY PATTERN

ERROR CONTENTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 seconds

Compressor, Electrical parts of

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.5 second

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

comp. Gas leak

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

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