How it Works
Daewoo
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DSB-070
Service Manual
73 pgs1.77 Mb1

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

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
3) Exploded Diagram (Indoor Unit)......................................................................55
4) Exploded Diagram (Outdoor Unit)...................................................................60
5) Control Box Assembly......................................................................................66
1. SPECIFICATIONS
¡ DSB-070LH
MODEL
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
Data
Compressor
Power Input W 676/693 Starting Current A 18 Type Rotary Model QB 134PL 12B Capacitor 25µF/400VAC
DSB-070LH
Indoor Unit Outdoor Unit
Fan
Motor
Refrigerant
(R-22)
Connection
Dimensions (W x H x D) mm 750 x 245 x 174 654 x 549 x 256 Net Weight kg 7.0 34
Type Cross flow fan Propeller fan Capacitor 1.0µF 400VAC 1.8µF 400V Motor Model Number IC-8417DWKF5A IC-9625DWLF5A Control Capillary Charge Q'ty g 900 Type Flare OD
(Liquid/Suction)
in(mm) 1/4 (6.35) 1/2 (12.7)
2
¡ DSB-091LH
MODEL
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
Data
Compressor
Power Input W 910/940 Starting Current A 24 Type Rotary Model RBB100A001 QK 185PN13B Capacitor 30µF / 450VAC 35µF / 400VAC
DSB-091LH
Indoor Unit Outdoor Unit
Fan
Motor
Refrigerant
(R-22)
Connection
Dimensions (W x H x D) mm 750 x 245 x 174 654 x 549 x 256 Net Weight kg 7.0 34
Type Cross flow fan Propeller fan Capacitor 1.0µF 400VAC 1.8µF 400V Motor Model Number IC-8417DWKF5A IC-9630DWLF5A Control Capillary Charge Q'ty g 1,150 Type Flare OD
(Liquid/Suction)
in(mm) 1/4 (6.35) 1/2 (12.7)
3
¡ DSB-121LH
MODEL
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
Data
Compressor
Power Input W 1,500/1,410 Starting Current A 37 Type Rotary Model RCB 150A001 Capacitor 35µF/ 400VAC
DSB-121LH
Division Indoor Unit Outdoor Unit
Fan
Motor
Refrigerant
(R-22)
Connection
Dimensions (W x H x D) mm 925 x 285 x 194
Net Weight kg 9.7 34
Type Cross flow fan Propeller fan Capacitor 1.0µF 400VAC 3.5µF 400VAC Motor Model Number IC-8428DWKG7C IC-9430DWLC5B Control Capillary Charge Q'ty g 1,060 Type Flare OD
(Liquid/Suction)
in(mm) 1/4 (6.35) 1/2 (12.7)
666 x 552 x 264(Before)
654 x 549 x 256(After)
4
750
Plate Mounting
REMOCON
Connecting Pipe
Grille Insert
174
245
REMOTE CONTROLLER
Frame Grille
Body
Plate Mounting
INDOOR UNIT
2. OUTLINE AND DIMENSIONS
1
¡ DSB-070LH/DSB-091LH
5
REMOCON
Filter - L Filter - R
Grille Insert
Frame Grille
Body
Plate Mounting
Connecting Pipe
Plate Mounting
406
194
285
925
REMOTE CONTROLLER
¡ DSB-121LH
6
256
549
654
Inlet
Inlet
Cabinet Side
Panel Top
Guide Support
Outlet
Foot Cushion
OUTDOOR UNIT
Outlet
Cabinet Front
Foot
Handle
7
Service Valve
¡ DSB-070LH/DSB-091LH/DSB-121LH(After)
Cabinet SideHandleCabinet Front Foot
264 334
Panel Top
Cabinet Back
552 572
Inlet
AIR
Inlet
Outlet
Foot Cushion
Service Valve
666
¡ DSB-121LH(Before)
8
3. OPERATION
REMOTE CONTROLLER
PARTS OF NAME AND FUNCTION
¡ DSB-070LH/DSB-091LH
Indoor Unit
Electrostatic Filter (option)
Deodorizing Filter (option)
Air Inlet
Antibacterial Filter
Fan Direction (Up, Down)
Air Outlet
Lamp
Remote Controller Receiver
Power Plug
Remote Controller
9
¡ DSB-121LH
Power Plug
Electrostatic Filter Deodorizing FilterAir Inlet
Antibacterial Filter
Air Outlet Fan Direction
(Up, Down)
Remote Controller
Remote Controller Receiver
Lamp
REMOTE CONTROLLER
Indoor Unit
10
¡ DSB-070LH/DSB-091LH
Timer (Yellow)
Lights during the time reservation mode.
Quick (Red)
ON (Red)
Lights when the
operation is going on.
Air clean (Green)
EMR. REMOCON
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 .”
■
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
EMERGENCY REMOTE
ON AIR CLEAN QUICK TIMER
¡ DSB-121LH
Indoor Unit Display Switch P anel
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".
§ 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.
ON (Red)
Lights when the operation is going on.
Timer (Y ello w)
Lights during the time reservation mode.
Remote switch is usally used by Remote Controller.
Air clean (Green)
Quick(Red)
12
¡ DSB-070LH/DSB-091LH/DSB-121LH(After)
Outdoor Unit
Air Inlet (Side Back)
Connection Wire
Air Outlet
Connecting Pipe
Drain Hose
13
AIR
Air Inlet (side Back)
Air Outlet
Connection Wire
Connecting Pipe
Drain Hose
¡ DSB-121LH(Before)
Outdoor Unit
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 T op Panel.
The front locking parts
FRONT SIDE BACK SIDE
The back locking parts
14
REMOTE CONTROLLER
MODE
SLEEP
ON/OFF
TIMER
ENTER/ CANCEL
FAN SPEED
TURBO/MILD
Display
Displays information pertaining to unit.
TURBO/MILD
Press to be colder the unit.
TIMER ENTER/CANCEL Button
Press to enter a timer setting or to cancel timer setting
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)
MODE Button
Press to cycle through the modes (Auto/Quick/Cooling/Fan/Dry)
SLEEP Button
Press to set the unit for the sleep mode.
FAN DIR.
FAN DIR. Button
Press to select up/down direction for fan.
ON/OFF Button
Press to turn the unit on or off.
TEMPERATURE Buttons
Press to raise or lower the desired temperature.
FAN SPEED Button
Press to select the fan speed (High " ", Middle " ", Low " ").
COVER
Slide down to access most of the remote buttons. Slide down further to access the battery compartment.
AUTO
REMOTE CONTROLLER
¡ DSB-070LH/DSB-091LH/DSB-121LH
Name of Each Button
15
REMOTE CONTROLLER DISPLAY
REMOTE CONTROLLER
+–
+–
REMOTE CONTROLLER
MODE Indicators (Auto/Quick/Cool/Fan/Dehumidifier/Heat)
Lights to indicate the mode selected.
TIMER Indicators (Include sleep)
Lights to indicate the timer function mode.
TEMPERATURE & RESERVATION TIME lndicator
Lights to indicate the temperature or time.
FAN DIRECTION Indicators
Lights to indicate the fan direction.
NATURAL Indicator
Lights to indicate the speeds simulating a loreeze.
FAN Indicators
Lights to indicate the fan speed.
AUTO
¡ DSB-070LH/DSB-091LH/DSB-121LH
Replacing Batteries
Open the cover after pressing the arrow
1
direction and pulling out.
Put the drycell by §]§^ direction.
2
16
3
Close the cover after pushing into arrow direction.
DESCRIPTION OF FUNCTIONS
Unit ON
Unit OFF
SET Time
HOUR
ON
OFF
Unit ON
Unit OFF
SET Time
HOUR
ON
OFF
COMP (ON)
*RT: ROOM TEMPERATURE DT: DESIRED TEMPERATURE
COMP (OFF)
-1°C0°C (COOLING)
(RT-DT)
COMP (OFF)
COMP (ON)
-1°C0°C HEATING
(RT-DT)
OFF-Timer
If you set time in OFF-Timer Mode, the unit will stop at the set time.
ON-Timer
If you set time in ON-Timer Mode, the unit will run at the set time.
Control of Room Temperature
(1) Range of setting temperature: 18~32°C (2) Setting temperature: Operating temperature of compressor
(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 , y ou 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
Fan Speed (Indoor Unit)
0°C
L
M
H
1°C2°C
(R.T-D.T)
(D.T)
L
M
H
012345°C (DT-RT)
(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
H HHLHH H
MMMLMH M
L LLLLH L
Auto Auto Auto L Auto H Auto
Natural Natural Natural L Natural H Natural
DEHUMI-
DIFICATION
AUTO QUICK HEAT
(4) Automatic Operation If the unit is set in 'AUT O' mode , the unit operates automatically according to the room temperature to keep the room temperature comfortable.
(COOLING)
(HEATING)
18
Sleep Mode
0 0.5 1.0 HOUR
(COOLING CYCLE)
DT
+0.5°C
+0.5°C
+0.5°C
0 0.5 1.0 HOUR
(HEATING CYCLE)
DT
–0.5°C
–0.5°C
–0.5°C
0°C7°C
Compressor and Outdoor Fan
OFF
OFF
ON
Set Speed
Indoor Fan
(1) When you are going to sleep , select sleep s witch and the unit controls the room to the desired temper ature.
(The unit will not operate after 4 hour)
(2) For changing the temperature.
(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: LO W ¡You cannot operate with remote controller.
Frost Prevention of Indoor Unit
When the unit operates at low ambient temperature, frost may appear on the Ev aporator. 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.
(Indoor coil temperature)
19
3 min. 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.
5 Seconds Time Delay of Indoor Fan Motor
Wnen the speed of indoor fan motor changes, there is a time dela y of 5 seconds at each speed step.
Auto Mode (I)
(1) In Auto Mode (I)
After the indoor fan is operated f or 20 seconds in the Auto Mode (I), the unit will operate automatically b y selecting operating Mode according to the room temperature
(RT: Room temperature)
ROOM TEMPERATURE
28°C §ZRT
22°C < RT < 28°C
RT §Z22°C
(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.
OPERA TING MODE
Cooling
Dehumidifier
Heating
FLAP POSITION
Cooling Position Cooling Position Heating Position
20
Dehumidification Mode
-1
OFF
ON
(Room temperature-18˚C)
01
-1
OFF
ON
(Room temperature-32˚C)
01
!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
Air Discharge Direction(only remocon operation)
The air discharge direction procedure is below.
Fixed Up/Down Fixed
Up/Down
Quick Mode(Powerful Cooling & Heating)
1) Cooling Mode
ƒƒNN
When the room temperature is higher than 22°C
!F an Speed: Super high speed @ Air discharge direction: Fixed # Set temperature: 18°C (Fixed) $ Compressor and Outdoor F an
The air discharge direction procedure is below
Fixed Up/Down
Up/Down Fixed
ƒƒRR
The option is LEFT/RIGHT direction.
1) Heating Mode
ƒƒNN
When the room temperature is higher than 22°C
!F an Speed: Super high speed @ Air discharge direction: Fixed # Set temperature: 18°C (Fixed) $ Compressor and Outdoor F an
The air discharge direction procedure is below
ƒƒRR
The option is LEFT/RIGHT direction.
COOLING POSITION
HEATING POSITION
Fixed Up/Down
Up/Down Fixed
21
Self-Diagnostic Function
The control will contain diagnostic test to verify the integrity of the system. (1)Error Code Display P attern
!ON LAMP: ON (Red) LED ON/OFF @ Error Code # Only Emergency mode
ERROR CODE
3
DISPLAY PATTERN ERROR CONTENTS
8 seconds
0.5 second
Compressor, Electrical parts of comp. Gas leak
22
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