Service Manual
Split System Air
Conditioner
Model: DSB-070LH/DSB-071LH
DSB-091LH/DSB-092LH
DSB-121LH/DSB-122LH
DSB-123LH
DSB-182LH/LH-R
DSB-183LH-R
DSA-183LH-R
DSB-240LH-R
DSA-240LH-R
DAEWOO ELECTRONICS CO., LTD.
by Nemko
S/M No. : 3113907100
✔
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).
CONTENTS
1. Specifications..........................................................................................................2
2. Outline and Dimensions.......................................................................................11
3. Operation ..............................................................................................................20
4. Wiring Diagram.....................................................................................................44
5. Refrigerant Cycle..................................................................................................50
6. Control Block Diagram.........................................................................................51
7. Trouble Shooting...................................................................................................53
8. Key Components of Electronic Circuit.................................................................87
9. Disassembly Instructions .....................................................................................90
1) Indoor Unit........................................................................................................90
2) Outdoor Unit.....................................................................................................97
3) Exploded Diagram (Indoor Unit)....................................................................100
4) Exploded Diagram (Outdoor Unit).................................................................116
5) Control Box Assembly....................................................................................124
Contents
2
1. SPECIFICATIONS
MODEL
DSB-070LH/071LH
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 3.1/3.1
Power Input W 740/720
Starting Current A 18
Type Rotary
Model RBB075A011
Capacitor 25µF/370VAC
Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 1.0µF 400VAC 1.8µF 400V
Motor Model Number YDK-8-4B YDK-30-6B/YDK-30-6B
Control Capillary
Charge Q'ty g 850
Type Flare
OD (Liquid/Gas) in(mm) 1/4 (6.35) 3/8 (9.52)
Dimensions (W x H x D) mm 750 x 245 x 174 654 x 549 x 256
Net Weight kg 7.0 34
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-070LH/071LH
3
MODEL
DSB-091LH/092LH
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 4.5/4.5
Power Input W 1,000/1,000
Starting Current A 24
Type Rotary
Model RBB100A011
Capacitor 30µF / 370VAC
Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 1.0µF 400VAC 1.8µF 400V
Motor Model Number YDK-8-4B A9530BD010/YDK-30-6B
Control Capillary
Charge Q'ty g 800
Type Flare
OD (Liquid/Gas) in(mm) 1/4 (6.35) 3/8 (9.52)
Dimensions (W x H x D) mm 750 x 245 x 174 654 x 549 x 256
Net Weight kg 7.0 34
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-091LH/092LH
4
MODEL
DSB-121LH/122LH
ITEM
Function Cooling & Heating
Class T
Power AC 220~240V/ 50Hz
Capacity W 3,663/3,956
Btu/h 12,500/13,500
Dehumidification l/h 1.6
Running Current A 7.0/6.5
Power Input W 1,500/1,410
Starting Current A 37
Type Rotary
Model RCB 150A001
Capacitor 35µF/ 370VAC
Division Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 1.0µF 400VAC 3.5µF 400VAC
Motor Model Number YDK-8-4B/A YDK-40-4B
Control Capillary
Charge Q'ty g 1,060
Type Flare
OD (Liquid/Gas) in(mm) 1/4 (6.35) 1/2 (12.7)
Dimensions (W x H x D) mm 925 x 285 x 194 654 x 549 x 256
Net Weight kg 9.7 34
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-121LH/122LH
5
MODEL
DSB-123LH
ITEM
Function Cooling & Heating
Class T
Power AC 220~240V/ 50Hz
Capacity W 3,517/3,810
Btu/h 12,000/13,000
Dehumidification l/h 1.28
Running Current A 6.8/7.3
Power Input W 1,500/1,550
Starting Current A 37
Type Rotary
Model RCB 150A001
Capacitor 35µF/ 370VAC
Division Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 1.5µF 400VAC 3.5µF 400VAC
Motor Model Number RP-13B YDK-40-4B
Control Capillary
Charge Q'ty g 1,230
Type Flare
OD (Liquid/Gas) in(mm) 1/4 (6.35) 3/8 (9.52)
Dimensions (W x H x D) mm 815 x 285 x 195 654 x 549 x 256
Net Weight kg 9.2 34
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-123LH
6
MODEL
DSB-182LH
ITEM
Function Cooling & Heating
Class T1
Power AC 220~240V/ 50Hz
Capacity W 5,129/5,422
Btu/h 17,500/18,500
Dehumidification l/h 2.3
Running Current A 9.65/10
Power Input W 2,150/2,235
Starting Current A 49
Type Rotary
Model SHW33TC4-U
Capacitor 50µF / 370VAC
Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 1.2µF 450VAC 3µF 400V
Motor Model Number IC-9425DWKC5C YDK-50-6B
Control Capillary
Charge Q'ty g 1,480
Type Flare
OD (Liquid/Gas) in(mm) 1/4 (6.35) 1/2 (12.7)
Dimensions (W x H x D) mm 1035 x 322 x 205 800 x 615 x 320
Net Weight kg 12.1 51.9
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-182LH
7
MODEL
DSB-182LH-R DSB-183LH-R
ITEM
Function Cooling & Heating
Class T1
Power AC 220~240V/ 50Hz
Capacity W 5,275/5,275 5,275/5,560
Btu/h 18,000/18,000 18,000/19,000
Dehumidification l/h 2.3
Running Current A 9.2/9.5 9.5/9.0
Power Input W 2,000/2,100 2,000/1,950
Starting Current A 54
Type Recipro
Model SHW33TC4-U AWG5524EXC
Capacitor 35µF / 370VAC
Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 1.2µF 450VAC 3µF 400V
Motor Model Number IC-9425DWKC5C YDK-50-6B
Control Capillary
Charge Q'ty g 1,550 1,600
Type Flare
OD (Liquid/Gas) in(mm) 1/4 (6.35) 1/2 (12.7)
Dimensions (W x H x D) mm 1035 x 322 x 205 800 x 615 x 320 1080 x 298 x 200 800 x 615 x 320
Net Weight kg 12.1 63.5 14.7 63.5
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-182LH-R/DSB-183LH-R
8
MODEL
DSA-183LH-R
ITEM
Remark JIS C9812 SAA385386
Function Cooling & Heating
Class T1
Power AC 220V / 60Hz
Capacity
W 5275.5/5422 4500/5400
Btu/h 18,000/18,500 15354/18425
Dehumidification l/h 2.3
Running Current A 9.4/8.8 10.4/8.8
Power Input W 2,000/1,900 2,200/1,900
Starting Current A 52 52
Type Recipro
Model AWG5519EXN
Capacitor 35µF / 400VAC
Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 2µF / 400VAC 4µF / 440VAC
Motor Model Number IC-9430DWKF7A IC-1625DWCF6B
Control Capillary
Charge Q'ty g 1500
Type Flare
OD (Liquid/Gas) in(mm) 1/4 (6.35) 1/2 (12.7)
Dimensions (W x H x D) mm 1080 x 298 x 200 800 x 630 x 320
Net Weight kg 14.7 63.5
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSA-183LH-R
9
MODEL
DSB-240LH-R
ITEM
Function Cooling & Heating
Class T1
Power AC 220~240V/ 50Hz
Capacity W 7,034/7,034
Btu/h 24,000/24,000
Dehumidification l/h 2.67
Running Current A 13.4 / 13.6
Power Input W 2,450 / 2,500
Starting Current A 83
Type Recipro
Model AWG5530EXC
Capacitor 45µF/ 400VAC
Division Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 2µF 400VAC 5µF 400VAC
Motor Model Number IC-9430DWKF7A OSME-806DERC
Control Capillary
Charge Q'ty g 2,050
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 65
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSB-240LH-R
10
MODEL
DSA-240LH-R
ITEM
Remark JIS C9812 SAA385386
Function Cooling & Heating
Class T1
Power AC 220V / 60Hz
Capacity
W 7,034/7,034 5,129
Btu/h 24,000/24,000 17.5
Dehumidification l/h 2.67
Running Current A 11.5/11.8 13
Power Input W 2,500/2,500 2,800
Starting Current A 60 602
Type Recipro
Model AWG5524EXN
Capacitor 35µF / 400VAC
Indoor Unit Outdoor Unit
Type Cross flow fan Propeller fan
Capacitor 2µF / 400VAC 5µF / 400VAC
Motor Model Number IC-9430DWKF7A OSME-986DERC
Control Capillary
Charge Q'ty g 2,100
Type Flare
OD (Liquid/Gas) in(mm) 3/8 (9.52) 5/8 (15.9)
Dimensions (W x H x D) mm 1080 x 298 x 200 875 x 675 x 325
Net Weight kg 14.7 65
Electrical
Data
Compressor
Fan
Motor
Refrigerant
(R-22)
Connection
DSA-240LH-R
2. OUTLINE AND DIMENSIONS
INDOOR UNIT
1
DSB-070LH/DSB-091LH
750
Connecting Pipe
Grille Insert
179
245
Frame Grille
Body
REMOCON
REMOTE CONTROLLER
Plate Mounting
Plate Mounting
11
DSB-183LH-R/DSA-183LH-R/DSB-240LH-R/DSA-240LH-R
Filter-L Filter-R
1080
430
710
Connecting Pipe
Plate Mounting
Grille Insert
Frame Grille
Body
REMOCON
200
298
16
17
DSB-070LH/071LH/091LH/092LH/121LH/122LH/123LH
2
OUTDOOR UNIT
DSB-182LH/LH-R/DSA-183LH-R/DSB-183LH-R
Outlet
Foot Cushion
Inlet
Outlet
800
Cabinet Front
Foot
320
Service Valve
Handle
615
Cabinet Side
Inlet
18
Panel Top
Guide Support
20
1
NAME AND FUNCTION OF PARTS
Indoor Unit
3. OPERA TION
Electrostatic Filter(Option)
Removes dust and particles
from the air
Deodorizing Filter(Option)
Removes bad smells from the
air.
Air Inlet
Remote
Controller
Receiver
Power Plug
Remote Controller
Fan Direction
(Up, Down)
Air Outlet
Antibacterial Filter
Removes dust and
prohibits germs.
Lamp
DSB-070LH/DSB-091LH
Electrostatic Filter(Option)
Removes dust and particles
from the air
Deodorizing Filter(Option)
Removes bad smells from the
air.
Air Inlet
Remote
Controller
Receiver
Power Plug
Remote Controller
Fan Direction
(Up, Down)
Air Outlet
Antibacterial Filter
Removes dust and
prohibits germs.
Lamp
DSB-071LH/DSB-092LH
Electrostatic Filter Deodorizing FilterAir Inlet
Antibacterial
Filter
Air Outlet Fan Direction
(Up, Down)
Remote Controller
Remote
Controller
Receiver
Lamp
REMOTE CONTROLLER
Removes dust and
particles from the air
Removes dust and
prohibits germs.
Removes bad smells
from the air.
Power Plug
Electrostatic FilterDeodorizing Filter Air Inlet
Antibacterial
Filter
Air Outlet Fan Direction
(Up, Down)
Remote Controller
Remote
Controller
Receiver
Lamp
R
E
M
O
T
E
C
O
N
T
R
O
L
L
E
R
Removes bad smells
from the air.
Removes dust and
prohibits germs.
Removes dust and
particles from the air
◆24◆ DSB-182LH/DSB-182LH-R
Indoor Cover
Electrostatic Filter
Removes dust
particles from the air.
Deodorizing Filter
Removes bad
smells from the air.
Test/Emergency/
Remote Switch
Slide to select
the desired position.
Indicators
Indicate the
AC setting.
Remote Sensor
Power PlugLCD Remote Controller
Air Cleaning
Filters
Removes dust
and prohibits
germs.
Cold Air
Air In
Fan Direction
(Up/Down)
Fan Direction
(Left/Right)
O
N
O
F
F
E
N
T
E
R
C
A
N
C
E
L
T
I
M
E
R
R
E
S
E
T
F
A
N
D
I
R
.
F
A
N
S
P
E
E
D
M
O
D
E
S
L
E
E
P
O
N
/
O
F
F
T
E
M
P
.
Indoor Cover
Electrostatic Filter
Removes dust
particles from the air.
Deodorizing Filter
Removes bad
smells from the air.
Emergency/Remote Switch
Indicators
Indicate the
AC setting.
Remote
Sensor
Power Plug
LCD Remote
Controller
Air Cleaning Filters
Removes dust and
prohibits germs.
AIR OUT
AIR IN
Fan Direction
(Up/Down)
Fan Direction
(Left/Right)
M
O
D
E
S
L
E
E
P
O
N
/
O
F
F
T
I
M
E
R
E
N
T
E
R
/
C
A
N
C
E
L
F
A
N
S
P
E
E
D
T
U
R
B
O
/
M
I
L
D
F
A
N
D
I
R
.
◆ DSB-183LH-R/DSA-183LH-R/DSB-240LH-R/DSA-240LH-R
26
DSB-070LH/DSB-091LH
■
Remote Control Signal Receiver
This place is the part to receive the signal if it
receives the signal, you can hear the signal
“beep. “beep . beep.”
■
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.
Indoor Unit Display Switch Panel
Timer (Yellow)
Lights during the time
reservation mode.
Quick (Red)
ON (Red)
Lights when the
operation is going on.
Air clean (Green)
27
DSB-071LH/DSB-092LH
■
Remote Control Signal Receiver
This place is the part to receive the signal if it
receives the signal, you can hear the signal
“beep. “beep. beep .”
■
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.
Indoor Unit Display Switch Panel
Timer (Yellow)
Lights during the time
reservation mode.
Quick (Red)
ON (Red)
Lights when the
operation is going on.
Air clean (Green)
28
Remote Control Signal Receiver
This place is the part to receive the signal if it
receives
the signal, you can hear the signal "beep,
beep".
Timer (Y ello w)
Lights during the time
reservation mode.
ON (Red)
Lights when the
operation is
going on.
* There is a switch panel at inside of Front
Panel. At the time of operating, open the
Front Panel.
Air clean (Green)
Quick(Red)
Remote switch is usally used by Remote
Controller.
Emergency switch can be used when the remote
controller is lost or testing.
DSB-121LH/122LH
Indoor Unit Display Switch Panel
◆
DSB-123LH
■ Remote Control Signal Receiver
This place is the part to receive the signal if it receives
the signal, you can hear the signal “beep. beep”.
■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.
Indoor Unit Display Switch P anel
29
ON (Red)
Lights when the
operation is going on.
Air clean
(Green)
Quick (Red)
Lights during the
time Quick
Mode.
Timer (Yellow)
Lights during the time
reservation mode.
EMERGENCY
REMOCON