Daewoo DSB-240LH Schematic

Contents

CONTENTS
1.	Specifications..........................................................................................................	2
2.	Outline and Dimensions .........................................................................................	6
3.	Operation ..............................................................................................................	12
4.	Wiring Diagram.....................................................................................................	28
5.	Refrigerant Cycle..................................................................................................	32
6.	Control Block Diagram .........................................................................................	33
7.	Electric Circuit Diagram........................................................................................	34
8.	Trouble Shooting...................................................................................................	36
9.	Key Components of Electronic Circuit.................................................................	62
10.	Disassembly Instructions .....................................................................................	65
	1) Indoor Unit ........................................................................................................	65
	2) Outdoor Unit .....................................................................................................	68
	3) Exploded Diagram (Indoor Unit)......................................................................	71
	4) Exploded Diagram (Outdoor Unit)...................................................................	79
	5) Control Box Assembly......................................................................................	87

1. SPECIFICATIONS

¡ DSB-070L
		MODEL		DSB-070L
ITEM
Function				Cooling
Class				T
Power			AC 220~ 240V/ 50Hz
Capacity		W		2,051
		Btu/h		7,000
Dehumidification		l/h		0.89
	Running Current	A		2.9
Electrical	Power Input	W		680
Data
	Starting Current	A		18
	Type			Rotary
Compressor	Model		QB 125PL 12B
	Capacitor		25µF/370VAC
			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		800
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-091L
		MODEL		DSB-091L
ITEM
Function				Cooling
Class				T
Power			AC 220~240V/ 50Hz
Capacity		W		2,637
		Btu/h		9,000
Dehumidification		l/h		1.15
	Running Current	A		4.2
Electrical	Power Input	W		920
Data
	Starting Current	A		21
	Type			Rotary
Compressor	Model		RBB090A001	QK 164PN12F
	Capacitor		25µF / 370VAC	30µF / 370VAC
			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		1,000
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-121L/122L
		MODEL	DSB-121L/122L
ITEM
Function				Cooling
Class				T
Power			AC 220~240V/ 50Hz
Capacity		W		3,507
		Btu/h		12,000
Dehumidification		l/h		1.53
	Running Current	A		5.7
Electrical	Power Input	W		1,250
Data
	Starting Current	A		34
	Type			Rotary
Compressor	Model		RCB 120A001
	Capacitor		25µF/ 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		1,300
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

¡ DSB-240L
		MODEL		DSB-240L
ITEM
Function				Cooling
Class				T
Power			AC 220~240V/ 50Hz
Capacity		W		7,030
		Btu/h		24,000
Dehumidification		l/h		3.2
Electrical	Running Current	A		13.4
Data	Power Input	W		2,400
	Type			Recipro
Compressor	Model		AWG5530EXC
	Capacitor		45µF/ 400VAC
	Division		Indoor Unit	Outdoor Unit
Fan	Type		Cross flow fan	Propeller fan
Motor	Capacitor		2µF 400VAC	5µF 400VAC
	Motor Model Number		IC9430DWKG7A	05ME986DERC
Refrigerant	Control			Capillary
(R-22)	Charge Q'ty	g		2,050
Connection	Type			Flare
	OD (Liquid/Suction)	in(mm)	3/8 (9.52)	5/8 (15.9)
Dimensions (W x H x D)		mm	1080 x 298 x 200	872 x 675 x 325
Net Weight		kg	14.7	64
			5

OUTLINE AND DIMENSIONS	INDOOR UNIT
2.	1

¡ DSB-070L/DSB-091L

Plate Mounting

Connecting Pipe

750	REMOCON

6

Grille Insert

Frame Grille

Body

Plate Mounting

245

174

¡ DSB-121L/122L

Connecting Pipe

406	Plate Mounting

REMOCON

925

Plate Mounting

Body

Frame Grille

Grille Insert

285

Filter - L	Filter - R	194

7

¡ DSB-240L

Connecting Pipe

430	REMOCON
710	Plate Mounting
1080

8

Body

Frame Grille

Grille Insert

Filter-L

Filter-R

2 OUTDOOR UNIT

¡ DSB-070L/DSB-091L/DSB-121L/DSB-122L(After)

Inlet

		Cabinet Side
Inlet		256	Guide Support
		Panel Top
	Outlet	Foot
		Handle
	Cabinet Front

9

549

Outlet

654	Service Valve

Foot Cushion

¡ DSB-121L/122L(Before)

Inlet

Cushion Foot

666

Valve Service

Outlet	AIR	Inlet
Front Cabinet

Foot

264

334

Handle

552

572 CabinetSide

Top Panel Back Cabinet

10

¡ DSB-240L

Inlet

323

380

foot

Cabinet front

Service Cover

11

Cabinet Side

699

Service valve

873

3. OPERATION

1PARTS OF NAME AND FUNCTION

¡DSB-070L/DSB-091L

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

12

¡ DSB-121L/122L

Indoor Unit

Electrostatic Filter

Air Inlet

Deodorizing Filter

Antibacterial		Air Outlet	Fan Direction
Filter			(Up, Down)

Power Plug		Remote
		Controller
		Receiver

Remote Controller	Lamp

13

¡ DSB-070L/DSB-091L

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.

14

¡ DSB-121L/122L

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.

15

¡ DSB-240L

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, beep.”

ON (Red)						Timer (Yellow)
Lights-on					Lights-on during the time
during the operation					of reservation mode.
Air clean (Green)					Quick (Red)
Lights-on					Lights-on during the time
during the operation					of Quick Mode.

Switch Panel

REMOCONEMERGENCY

EMERGENCYREMOCON

■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.

16

¡ DSB-070L/DSB-091L/DSB-121L/DSB-122L(After)

Outdoor Unit

Air Inlet (Side Back)

Connection Wire

Connecting Pipe

Drain Hose

Air Outlet

17

¡ DSB-121L/DSB-122L(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

18

¡ DSB-240L

Connection wire

Air Inlet

Drain Hose

Air Outlet

Connection Pipe

19

2REMOTE CONTROLLER

¡DSB-070L/DSB-091L/DSB-121L/DSB-122L/DSB-240L

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.

20

3REMOTE CONTROLLER DISPLAY

¡DSB-070L/DSB-091L/DSB-121L/DSB-122L/DSB-240L

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

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

21

4 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)

-1°C				(RT-DT)
		+1°Χ0 C
	(COOLING)

*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"

22

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
			DIFICATION
H	H	H	L	H	H
M	M	M	L	M	H
L	L	L	L	L	H
Auto		Auto	L	Auto	H
Natural	Natural	Natural	L	Natural	H

(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)

23

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
						+0.5°C
				+0.5°C
			+0.5°C
0			0.5		1.0		HOUR
			(COOLING 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: Quick

•Preset temperature:18°C: Cooling

•Fan speed: High

¡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.

Compressor and		ON		ON
Outdoor Fan
			OFF
Indoor Fan				Set speed

-1°C +7°C

(Indoor coil temperature)

24

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.

AutoMode

(1)In Auto Mode

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

		(RT: Room temperature)
ROOM TEMPERATURE	OPERATING MODE	FLAP POSITION
DT-2°C >RT	Cooling	Cooling Position
DT-2°C ≤ RT ≤ DT+3°C	Dehumidifier	Cooling Position
DT+3°C < RT	Cooling	Cooling 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.

25

Dehumidification Mode

1Desired temperature < Room temperature Outdoor Fan, Compressor : ON

Indoor Fan : Low speed

2Desired temperature ¡ˆRoom temperature Compressor : 3 min/ON, 5 min/OFF

Fan Speed : low speed

3Room temperature ¡´18°C Compressor : 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)

1) Cooling Mode

* When the room temperature is higher than 22°C

1Fan Speed: Super high speed

2Air discharge direction: Fixed

3Set temperature: 18°C (Fixed)

4Compressor and Outdoor Fan

The air discharge direction procedure is below

Fixed Up/Down

Up/Down Fixed

* The option is LEFT/RIGHT direction.

26

Self-Diagnostic Function

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

(1)Error Code Display Pattern

1ON LAMP: Blink

LED BLINK PATTERN	CASE	NOTE

Room Sensor open or Short

• Continuously woorking to fix room

temperature 32°C in cooling mode

0.5s

• I/D coil sensor open or short

Do not woorking

8s

1 times blink

• O/D coil sensor open or short

• Compressor or electrical parts

Continuously workiug

of compressor error.

2 times blink

• Gas leak

27

4. WIRING DIAGRAM

¡ DSB-070L/DSB-091L/DSB-121L/DSB-122L

			R	S	COMPRESSOR		MOTORFAN
			C
					RED	YEL
YEL/GRN	BLK	BLU	BRN	HERM	FAN	CAPACITOR	BRN
					C
					BRN

				L			Y	OUTDOOR TERMINAL BLOCK
CORD POWER				BROWN	YELLOW/GREEN		BLUE
			BLU YEL/GRN BRN	L			Y
				BRN	YEL/GRN	BLU	BLU
				3	2	1	1
							COMP
								BLK	1
								BLK	2
								RED	1
								RED	2
INDOOR MOTORFAN	R MOTORFAN CAPACITOR	CS	2132 1	BLU					87654321
				ORG
				RED				WHT
								BLU
				BLK				RED
								GRN
				YEL				YEL
								GRY
								BRN
								BLK
SWING MOTOR			1	RED
			43 2	ORG
				PINK
				BLU
			5	YEL
								BLK	1
								BLK	23
								BLK
								BLK	4

TRANS

PCB LED

SENSOR I/D

UNIT OUTDOOR

UNIT INDOOR

28

OUTDOOR

INDOOR

PCB TRANS RED

LED PCB

BLK

RA

IDC

1 2

3 4 5 6

7

1

H

RED

WHT

BLK

RED

TH.

TH.

BRN

RED

CN2

CN6

CN9

CN1

RL1

S

ORG

BLU

FAN MOTOR

1

0

RED

RED

RED

Y

Y

CAPACITOR DUAL

8

6

BLU

BLU

BLU

N

BLU

YEL/GRN

N

CN1

FUSE

CONTROL PCB

YEL/GRN YEL/GRN

FAN

4

2

BRN

BRN

BRN

C

L

HERM

L

POWER RELAY

COMPRESSOR

RED

WHT

RA TH. : ROOM AIR THERMISTOR

YEL/GRN

IDC TH. : INDOOR COIL THERMISTOR

S

CN4

CN3

CN13

C

RED ORG

BLU

POWER

RED

ORG

YEL PNK

BLU

BLU

BRN

S

C

R

BRN

CORD

YEL

BLK

R

BLU

RA TH. : ROOM AIR THERMISTOR

IDC TH. : INDOOR COIL THERMISTOR

FAN MOTOR

INDOOR

SWING MOTOR

CAPACITOR

FAN MOTOR

¡ DSB-240L

29