Service Manual
FLOOR STANDING AIR CONDITIONER
Model: DPB-280LH
DAEWOO ELECTRONICS CO., LTD.
OVERSEAS SERVICE DEFT.
1. INSTALLATION GUIDE
1
IN STALLATIO N P LACE
NIndoor unit
NOutdoor unit
• Flat and strong place in the room
• No obstacles in front of air in/out grille
• A place no reach of direct ray of sun (if necessary, shield the
light)
• Easy place to connect drain hose to outside of room
• Easy place to connect copper tube with outdoor unit
• No obstacles in front of air in/out grille
• A place having a drain out-let
• Secure enough distance from neighboring objects as • Easy place to connect copper tube with indoor unit
shown below.
• Secure enough distance from neighboring objects as shown
below.
• Secure enough distance from neighboring objects as
shown below.
CAUTION : Do not hang the outdoor unit on the wall of building, in case of falling, it may cause a serious trouble and damage.
2
SPACE TO IN STALL
Secure enough space from the neighboring objects as shown below.
This is required to operate the unit efficiently.
10cm
50cm
5cm
(Indoor unit)
(Outdoor unit)
NNSpecifica tion a nd method of copper tube
• Connection method of copper tube is to make connection with flare nut at the end of the copper tube with a flare tool.
Flare specification
Unit: mm
A
B
Nominal diameter
B
Lquid
Gas
3/8”
5/8”
12~12.4
18.6~19
9.52
15.88
Torque
Unit: mm
Torque
Lquid
Gas
3/8”
5/8”
300Kg • cm
500Kg • cm
2
IN STALLATIO N O F IN DO O R UN IT
3
1) Drain hose should maintain downward slope to outside of room.
2
2) Indoor unit should be fixed firmly with the bracket to avoid falling down.
The bracket has several holes to fix the unit any direction needed
(fore/back/right/left)
1
IN STALLATIO N O F O UTDO O R UN IT
4
5
1) Cushion rubbers absorb vibration of outdoor unit
2) The unit must be grounded for safety in accordance with local
electrical codes. (Grounding resistance should be under 100 ohms)
2
1
REFRIG ERAN T TUBE CO N N ECTIO N
IDU TERMINAL BLOCK
CAUTION
• Use designated diameter and thickness of tube.
• Connect all tube as short as possible and fix firmly.
• Less than 3M of the difference of height between indoor
and outdoor unit is desirable.
3
2
1
Y
N
L
• Fill up more refrigerant if the connection tube is longer
than 5M (50g/M).
(The refrigerant volume filled from the factory is suitable
for 5M connection)
• Be careful not to let in any dust or motes into the tube
when the tube passes the wall.
3
2
1
Y
N
L
• When insulating the connection, use foam rubber or
equivalent.
ODU TERMINAL BLOCK
(Connecting method)
3
Spec
Color
BLUE
3
2
1.25mm2
1.25mm2
1.25mm2
1.25mm2
1.25mm2
1.25mm2
1.25mm2
2.0mm2
SIGNAL LINE
SIGNAL LINE
BLACK
1
RED
SIGNAL LINE
Y
N
BROWN
SIGNAL LINE
BROWN
MAIN POWER (INDOOR)
MAIN POWER (INDOOR)
MAIN POWER (INDOOR)
MAIN POWER (OUTDOOR)
MAIN POWER (OUTDOOR)
MAIN POWER (OUTDOOR)
YEL/GRN
RED(or BLUE)
BLACK
L
N
2.0mm2
2.0mm2
YEL/GRN
WHITE
L
(Specification of harness)
6
ELECTRICAL W IRIN G
CAUTION
• Be sure to use designated wires and make it as short as possible
• Use an exclusive power supply for the air conditioner
• Use an electricity leakage interrupter having suitable capacity.
• Grounding resistance should be under 100 ohms and the grounding wire should be connected firmly to the
terminal of out door unit.
NNWire connection of indoor and outdoor unit
• When connecting wires of indoor and outdoor unit, the numbers of terminal block and terminals of connecting wires should
match exactly as shown below.
• Terminals of connecting wires should be fixed firmly using wire fixing tool to the same direction of terminal board.
(Diagram of wire connection)
4
2. SPECIFICATIONS
NDPB-280LH
MODEL
DPB-280LH
ITEM
Function
Class
COOLING
HEATING
T
Power
220~240V/ 50Hz
Capacity
W
Btu/h
l/h
8,200
28,000
-
8,200
28,000
-
Dehumidification
Running Current
Power Input
Starting Current
Type
A
14
14
Electrical
Data
W
2,800
2,800
A
-
Scroll
Compressor
Model
ZR36K3-PFJ-501
50µF/370V AC
Capacitor
Indoor Unit
Sirocco
Outdoor Unit
Propeller fan
8µF/370V AC
A2935BA010
Type
Fan
Capacitor
5µF/400V AC
DE112
Motor Model Number
Control
Capillary
2,000
Refrigerant
(R-22)
Charge Q'ty
Type
g
Flare
Connection
OD (Liquid/Suction)
in(mm)
mm
3/8” (9.52mm)
500 x 1,830 x 350
40
5/8” (15.88mm)
872 x 675 x 325
66
Dimensions (W x H x D)
Net Weight
kg
5
3. OUTLINE
IN DO O R UN IT
1
NDPB-2 8 0 LH
4
5
3
2
7
6
1
No
1
Part Name
Quantity
Description
Remarks
Connecting Hole
Evaporator
3
1
1
1
1
1
1
ø60X100 (Left, Right, Back)
Heat Exchanger
Air Inlet
2
3
Suction Grille
Discharge Grille
Fan Blower
4
Air outlet
5
Sirocco Type
6
Joint (Gas)
OD ø15.88mm
OD ø9.52mm
7
Joint (Liquid)
6
O UTDO O R UN IT
2
NDPB-2 8 0 LH
No
1
Part Name
Quantity
Description
Remarks
Service Valve (Liquid)
Service Valve (Gas)
Service Door
Fan Guard
1
1
1
1
1
1
1
1
1
1
OD ø9.52mm Flare Type
OD ø15.88mm Flare Type
2
3
4
Fan Protector
5
Fan Blower
Propeller type
6
Condenser
Heat Exchanger
Foor propeller fan
Depend on Models
Ground
7
Fan motor
8
Compressor
9
Earth Bolt
10
Connection Hole
Power & Control wire
7
4. OPERATION
1
PARTS O F N AM E AN D FUN CTIO N
Indoor Unit
AIR OUT
- According to the operation mode, it
is opened/closed automatically.
MAIN CONTROLS/
REMOTE SENSOR
AIR IN
- It is to suck warm air.
- There is an air filter inside this grille.
• The method to open the air suction
grille
Pull the upper side of grille with
both hands.
LCD REMOTE CONTROLLER
- Operative distance is within 7m from
the indoor unit.
- Use toward to the remote sensor
8
ROOM TEMPERATURE / DESIRED TEMPERATURE INDICATOR
- It displays current room temperature and desired room temperature.
FAN MODE INDICATOR
AUTO FAN SPEED INDICATOR
FAN SPEED INDICATOR
AUTO MODE INDICATOR
TIMER/SLEEP INDICATOR
COOL MODE INDICATOR
QUICK MODE
INDICATOR
ECONOMY MODE
INDICATOR
MODE BUTTON
HEAT MODE
INDICATOR
(ONLY HEAT PUMP
MODEL)
ON/OFF BUTTON
- Whenever you push this button.
It repeats on -> off -> on -> off.
MILD MODE INDICATOR
ECONOMY MODE BUTTON
DEHUMIDIFIER MODE
INDICATOR
FAN SPEED BUTTON
- AUTO -> LOW -> MIDDLE ->
HIGH -> NATURAL
TEMPERATURE BUTTONS
- Each time you push
- Each time you push
this button, temperature
this button, temperature
goes up by 1˚C.
falls by 1˚C.
9
Outdoor Unit
OUTDOOR UNIT AIR OUT
SERVICE VALVES(GAS TUBE)
SERVICE VALVES(LIQUID TUBE)
CAUTION
• Do not install the outdoor unit on
unstable place like outside wall of
building or outside of balcony. In case
of falling, it may cause serious trouble
and damage.
OUTDOOR UNIT AIR IN
- If there is any obstacle in front
of the grille, the efficiency of
the unit can be lowered.
10
2
REM O TE CO N TRO LLER
Na m e of Ea ch Button
AUTO
Display
Displays information
pertaining to unit.
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
(Auto, High " ", Middle " ",
Low " ", Natural).
FAN DIR.
Button
MODE
SLEEP
FAN SPEED
FAN DIR.
Press to select up/down
direction for fan.
MODE Button
FAN DIR.
TIMER
FAN DIR.
Button
Press to cycle through the modes
(Auto/Quick/Cool/Fan/Dehumidifier/
Heat)
Press to select left/right
direction for fan.
ON/OFF
ENTER/
TURBO/MILD
CANCEL
TURBO/MILD
Press to be more silent and
comfortable room condition
SLEEP Button
Press to set the unit for
the sleep mode.
TIMER ON/OFF Button
Press to set the unit off 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
COVER
Slide down to access most
of the remote buttons.
Slide down further to
access the battery
compartment.
11
3
REM O TE CO N TRO LLER DISP LAY
MODE Indicators (Auto/Quick/Cool/Fan/Dehumidifier/Heat)
Lights to indicate the mode selected.
AUTO
FAN Indicators
Lights to indicate
the fan speed.
FAN DIRECTION Indicators
Lights to indicate the
fan direction.
NATURAL Indicator
Lights to indicate the
speeds simulating a breeze.
TIMER Indicators
Lights to indicate the timer function mode.
TEMPERATURE & RESERVATION TIME lndicator
Lights to indicate the temperature or time.
Repla cing Ba tteries
TIMER
Slide down the cover to
access most of the
remote buttons. Slide
down further to access
the battery compart-
ment.
Insert two “AAA” size
Alkaline batteries
following the polarity
diagram below.
ON/OFF
ENTER/
CANCEL
TURBO/MILD
2
1
+
–
–
+
12
4
DESCRIP TIO N O F FUN CTIO N S
OFF-Tim er
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-Tim er
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 Tem pera ture
(1) Range of setting temperature: 18~32°C
(2) Setting temperature: Operating temperature of compressor
COMP (ON)
COMP (ON)
COMP (OFF)
COMP (OFF)
-1°C
°
+1˚C
(RT-DT)
-1°C
+1˚C
(DT-RT)
(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”
13
Fa n Speed (Indoor Unit)
(1) Motor speed (high speed, middle speed, 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)
DEHUMI-
FAN ONLY
COOL
AUTO
QUICK
HEAT
DIFICATION
H
H
H
L
L
H
H
H
H
M
M
M
M
M
L
L
L
L
L
L
H
H
L
Auto
X
Auto
Auto
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
(RT-DT)
(HEATING)
H
M
L
0°C
1°C
2°C
3°C
(DT-RT)
14
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
0
0.5
1.0
HOUR
0
0.5
1.0
HOUR
(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.
Frost Prevention 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 -2°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
ON
Compressor and
OFF
temperature is higher than 7°C or equal to 7°C.
Outdoor Fan
-2°C
7°C
(Indoor coil temperature)
15
3 m in. Tim e Dela y of Com pressor
In normal operation, there is a time delay of three minutes between turn off and turning back on including initial
3 Seconds Tim e Dela y of Indoor Fa n Motor
When the speed of indoor fan motor changes, there is a time delay of 3 seconds at each speed step.
Auto Mode
(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
DT: Desired
(
)
ROOM TEMPERATURE
OPERATING MODE
<
DT+3˚C RT
Cooling
<
<
DT-2˚C
RT DT+2˚C
Dehumidifier
Heating
>
DT -2°C RT
(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.
16
Dehum idifica tion Mode
1DT+1˚C < RT
Outdoor Fan, Compressor : ON
Indoor Fan : Low speed
<
<
2DT-1˚C RT DT+1˚C
Outdoor Fan, Compressor : 3 min/ON, 5 min/OFF
Indoor Fan : Low speed
3DT-1˚C > RT
Outdoor Fan, Compressor : OFF
Indoor Fan : Low speed
Air Discha rge Direction
1. Press fan direction button to select fan direction
• Press desired fan direction button, "UP • DOWN" or "LEFT • RIGHT" control louver moves, press
again to stop
FAN DIR.
FAN DIR.
Quick Mode(Pow erful Cooling & Hea ting)
(1) Cooling Mode
(1) Heating Mode
* When the room temperature is higher than 22˚C or
equal to 22˚C
* When the room temperature is lower than 22˚C
1Fan Speed: high speed (Fixed)
1Fan Speed: high speed (Fixed)
2Air discharge direction: The control is available.
3Set temperature: 18°C (Fixed)
2Air discharge direction: The control is available.
3Set temperature: 32°C (Fixed)
Self-Dia gnostic Function
The control will contain diagnostic test to verify the integrity of the system.
(1) Error Code Display : RT (Room Temperature) LED
ERROR CODE
DISPLAY
“E2”
ERROR CONTENTS
Indoor unit sensor open or short
Outdoor unit sensor open or short
1
2
“E2”
Compressor, Electrical parts of
comp. Gas leak
3
“ E3 ”
17
5. CIRCUIT DIAGRAM
1
W IRE CO N N ECTIO N O F IN DO O R AN D O UTDO O R UN IT
NNDPB-2 8 0 LH
18
M AIN ELECTRIC PARTS
2
NNDPB-2 8 0 LH
Object/part No.
Motor-compressor
Outdoor fan motor
Indoor fan motor
Manufacturer/trademark
Copeland
Type/model
ZR36K3-PFJ
Technical data
AC220-240V 50Hz R22
AC 230V 50Hz
AC 230V 50Hz
AC 250V
Standard
Mark(s) of confirmity
DEMKO
DMI
A2935BA010
DE112
NONE
O-YANG
NONE
Thermal protector for Korea Taxas
17AM035A5
fan motor
Instruments
Jaeil engineering
ST-16
AC 220-240V 50/60Hz
AC 220-240V 50/60Hz
VDE
Synchronous motor
Namyang Precision NYM-16H-1
(Alter)
NONE
Stepping motor
Hyup jin precision
Samwha capacitor
Samwha capacitor
Donglim
MSFCC20F02
37H08500B
PEB-958
DC 12V
NONE
Dual capacitor for
compressor and
outdoor fan motor
8/50µF 370VAC
5µF 400VAC
TUV, UL, CSA
TUV, UL, CSA
Running capacitor
for indoor fan motor
Terminal block
Transformer
DTB-8P
AC 300V 25A
AC 220V/18VDC 50/60Hz
AC 220-240V 50Hz
AC 220V 40W
AC 220-240V 25A
AC 250V 5A
NONE
NEMKO
NONE
NONE
VDE
Namsung electronics DWA-5401FN
Reversing valve
Ranco japan
V26110D
Compressor heater Young chang
AC Control realy
Relay
Omron electronics
G7L-2A-TUB
Chung won electronics CS11-12H
TUV, UL, CSA
VDE
Fuse
Triad electronics
Pilkor electronics
50T
AC 250V 3.15A
AC 275V
X2 capacitor
Photocoupler
Varistor
PCX2 335
VDE, N.S.
VDE
Toshiba electronics TLP560J
AC 250V
Marcon electronics
TNR15G561K
504-616V 50A
600V 3A
UL
Triac
Toshiba electronics SM3JZ47
UL
19
3
P CB CIRCUIT DIAG RAM
20
NO
1
Part Code
3108803400
5FVLB3152L
3107000600
3108802500
3108802600
3108802700
3108802900
3108803000
3108801900
3108801910
3108802000
3108804100
3108802200
D15G561K--
DZN4004A--
CCXE1H102Z
CCXE1H103M
CCXE1E104M
CDXE1H104M
CEXE35338M
CEXE1V108C
CEXE1E477C
CEXE1C106C
CEXE1C475C
CN4XD104M
RN-4K1272F
RD-4K103J-
RD-4K842F-
RD-4K562J-
RD-4K102J-
RD-4K301J-
RD-4K101J-
Part Name
PIN
Quantity
Specification
GP881206-2(187)
3
1
2
1
1
1
1
1
1
1
1
1
1
1
6
1
1
8
1
1
1
1
1
1
1
2
10
2
2
3
4
1
2
FUSE
250V 50T 3.15A
AFC-520
3
FUSE CLIP
WAFER
4
YW396-03AVD
YW396-03AVD (RD)
YW396-03AVD (BK)
YW396-05AVD
YW500-02V
5
WAFER
6
WAFER
7
WAFER
8
WAFER
9
WAFER
SMW250-04
SMW250-04(RD)
SMW250-06
SMW250-07
SMW250-10 (RD)
15G561K
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
WAFER
WAFER
WAFER
WAFER
VARISTOR
DIODE
1N4004 TAPE
102Z,50VDC
103Z,50VDC
104Z,25VDC
104Z,CR0561B-Z5U
3300uF 35V SD
1000uF 35V SD
470uF 25V SD
10uF 50V SS
4.7uF 50V SS
F4 104Z
C-CERA
C-CERA
C-CERA
C-MULTI
C-ELEC
C-ELEC
C-ELEC
C-ELEC
C-ELEC
CAPA. ARRAY
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
1/4W-12.7KF
1/4W-10KJ
1/4W-8.4KF
1/4W-5.6KJ
1/4W-1KJ
1/4W-300J
1/4W-100J
21
NO
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Part Code
RD-2K200J-
RD-2K390J-
RD-2K121J-
RD-2K102J-
CLV-B3104M
4EFR-37071
3105796100
3106002900
3105698200
52C131J003
3109400100
3109400100
3104398700
5SC0101128
1KA7812AP-
1KA7805AP-
TKRC102M--
1KA7042P--
4850103610
TSM3JZ47--
1TLP560J--
13GS87PH46
13GT4051B-
13GT62004A
13GT62783A
Part Name
RESISTOR
RESISTOR
RESISTOR
RESISTOR
C-LINE ACROSS
SNUBBER
HEAT SHINK
WASHER
Quantity
Specification
1
2
5
1
1
1
1
1
1
1
32
1
1
5
1
1
2
1
1
1
1
1
1
2
1
1/2W-20J
1/2W-39J
1/2W-150J
1/2W-1KJ
275V 104K
0.1UF 120 300V
33(H)X23X17
HEAT SINKøÎ
DP-2520BA
130uH 3A
BUZZER
COIL
JUMPER
10mm
JUMPER OPTION
PCB MAIN
RELAY
10mm
162X169
CS11-SH12
KIA7812P
IC REGULATOR
IC REGULATOR
TR
KIA7805P
KRC102M
KIA7042P
IC RESET
RESONATOR
TRIAC
CST8.00MGW
SM3JZ47
PHOTO COUPLER
IC MICOM
IC MUX
TLP560J
TMP87C846AN
TC4051BP
TD62004AP
TD62783AP
IC DRIVE
IC DRIVE
22
4
P CB DRIVIN G DESCRIP TIO N
Pow er Supply(1 )
12V
5V
CL1
VAR
D2
AC 220V
D1
D4
IC2
275V
104K
IC3
7812
7805
CC2
CE2
+
CC3
CE3
FUSE1
3.15A
CC1
CE1
+
VI VO
VI VO
+
D3
104
16V
100µF
25V
470µF
35V
1000µF
104
104
POWER TRANS
DESCRIPTIO N
DC Power Supply in circuit needs +12V and +5V. +12V is used for Compressor Driving Relay, Triac Driving
Photo Triac, Buzzer Driving, Stepping Motor. AC voltage of secondary Power Transformer is rectified by Bridge
Diode, and it is filtering by Main Condensor CE1.
Filtered DC voltage is about +18V, is regulated +12V DC by Regulator IC7812.
And it is regulated +5V DC by Regulator IC7805.
VAR is serge filter and CC1, CC2, CC3 is Noise filter.
Oscilla tor(2 )
5V
19
CC13
104
OSC
8M
20
DESCRIPTIO N
Oscillatory Frequency drive Micom, it is made up 8MHz resonator oscillatory Freqency.
Ocillatory wave is as following Fig 2-1.
VDD-10%
VSS+10%
Fig 2-1
23
Sensor(3 )
Room temperature and Evaporator temperature Sensor Input
5V
CN10
EVA
R32
330
1
2
3
4
5
1
23
MICOM
PT-K43C
Room
R37
12.7K
CA1
104
MUX
SMW250-04
R31
330
PT-K43C
R38
12.7K
CA1
104
DESCRIPTIO N
Number 23 of Micom is Terminal of A/D convertor Input.
Room temperature and Evaporator temperature is sensing by change of Thermister Resistance, Micom is put
in 5V by ratio between R37 (12.7KΩ) and R38 (12.7KΩ).
Relation between temperature and voltage is following Table 3-1.
CA1 is Noise filter.
Resistance & Voltage of the Sensor
temp(°C) resistance1(Ω) Vout(V)
temp(°C) resistance1(Ω) Vout(V)
temp(°C) resistance1(Ω) Vout(V)
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
7
8
54,769
52,070
49,579
47,272
44,116
42,190
40,390
37,902
36,368
34,235
32,279
31,064
29,358
27,781
26,794
25,400
24,101
22,888
21,752
20,687
19,685
19,050
18,143
17,286
16,476
15,708
14,979
0.941
0.980
1.020
1.059
1.118
1.157
1.196
1.255
1.294
1.353
1.412
1.451
1.510
1.569
1.608
1.667
1.725
1.784
1.843
1.902
1.961
2.000
2.059
2.118
2.176
2.235
2.294
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
14,288
13,629
13,002
12,405
12,021
11,468
10,939
10,432
9,947
9,634
9,182
8,890
8,467
8,060
7,79,
7,415
7,168
6,809
6,577
6,239
6,020
5,806
5,597
5,392
5,094
4,901
4,711
2.353
2.412
2.471
2.529
2.569
2.627
2.686
2.745
2.804
2.843
2.902
2.941
3.000
3.059
3.095
3.157
3.196
3.255
3.294
3.353
3.392
3.431
3.471
3.510
3.569
3.608
3.647
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
4,526
4,435
4,255
4,080
3,908
3,739
3,656
3,493
3,332
3,253
3,098
3,021
2,870
2,795
2,721
2,576
2,504
2,433
2,363
2,293
2,156
2,088
2,020
1,954
1,888
1,822
1,758
3.686
3.706
3.745
3.784
3.824
3.863
3.882
3.922
3.961
3.980
4.020
4.039
4.078
4.098
4.118
4.157
4.176
4.196
4.216
4.235
4.275
4.294
4.314
4.333
4.353
4.373
4.392
9
10
11
12
13
14
15
16
24
Tria c Driving(4 )
12V
N
L
L1
AC 220V
1
2
TLP561
PT1
1
2
130µH
3A
SN1
MICOM
0.1µF
T1
SM3JZ47
120Ohm
IC4
KID 65004
R2
TO MOTOR
7
10
32
1K
1/2W
DESCRIPTIO N
Number 32 Terminal of Micom is put out Pulse Output, by way of Buffer it is driving Photo Triac is supplied
Trigger Signal.
Trigger Test of Triac is detected Zero Cross Part of AC input and it is triggered from Zero Cross part to Time
delay part according to Fan Speed. (Ref. Fig 4-1) SN1 is Snubber.
AC220V
TRIGGER
LOW SPEED
MI
D
D
L
E
S
P
E
E
D
HIGH SPEED
MOTOR
INPUT
Fig 4-1
25
Rem ote Controller(5 )
DESCRIPTIO N
Signal from Remote Controller put in only Control Data Signal at Micom Terminal of Number 33, which is gotten
fid of Carrier (38KHz) from Receive Module. Signal Wave repeat third as following Fig 5-1.
But in Secondary Wave Custom Code is Reversed Face.
9ms
4.5ms
16bit
24bit
8bit
16bit
0.56ms
1.69ms
0.56ms
1.12ms
bit 0
2.25ms
bit 1
CUSTOM
CODE
DATA
CODE
CHECK
SUM
LEADER CODE
TAILER
Fig 5-2
BIT STRUCTURE
Fig 5-1
26
Micom Pow er Supply(7 )
5V
VDD 42
+
CE4
10µF
16V
CC5
104
41
40
MICOM
39
OSC
8MHz
19
20
21
CC7
104
VSS
22
DESCRIPTIO N
MICOM Power is supplied 5V at Number 42 using VDD, Number 19, 20 Using Oscillator, CC7 is noise filter.
27
Reset(8 )
5V
R4
5.6K
IC6
7042P
+
CE5
4.7µF
50V
MICOM
18
DESCRIPTIO N
Voltage less than about 0.8V put in Micom Terminal of Number 18 and then Micom reset. Reset IC detect
Power ON and Voltage less than 4.25V, and then send Reset Signal.
Vcc (+5V)
4.25V
t
DELAY TIME
FOR POWER ON
H
RESET
L
t
POWER
ON
28
Function Selecting(9 )
R22
R23
R24
R25
JS1
JS2
JS3
JS4
27
26
25
24
MICOM
DESCRIPTIO N
Selecting function is as following table 9-1.
* When power source is put at first, Funtion selection input is recognized.
And when the unit is running the microcomputer ignore variation of funtion selection input.
SHORT
SIMPLE
132
OPEN
LCD
JS1
JS2
JS3
JS4
180
MILD
HIGH
Heat Pump
Cooling Only
Table 9-1
Buzzer Driving(1 0 )
VCC
12V
DESCRIPTIO N
MICOM
R7
1K
BZ
Micom 34 Terminal put out Buzzer Driving Pulse,
its output is driving Buzzer through Buffer.
Ocillatory Frequency of buzzer is selected by
internal Micom.
KID 65004
6
11
34
This unit is setting at 2KHz.
29
Zero Crossing Detect(1 1 )
VCC
R5
10K
TR2
KRC102M
R6
1K
D5
MICOM
1
2
1
31
TRANS
OUTPUT
R3
5.6K
CC8
103
D6
2
1
DESCRIPTIO N
It detect Zero Cross part of Trans output voltage, Transistor TR2 is used to put in the Micom.
Detail Driving is as following Fig 11-1.
AC18V
The
Number
31 of
H
Micom
terminal
L
DETECT POINT
Fig 11-1
30
Stepping Motor Driving(1 2 )
12V
CN11
1
2
3
IC4
+
B
9
Ø 1
M1
10
Ø 2 FOR SWING
4
MICOM
11
12
5
6
Ø 3
Ø 4
KID65004
DESCRIPTIO N
There are one Stepping Motor for Flap (up and down) and it is used 4 face Drive Method.
It is driving as following Fig 12-1. (Ring Count Method of 8 Status)
Ø 4
Ø 3
Ø 2
Ø 1
(Normal Rotating)
(Reversed Rotating)
Fig 12-1
31
MICOM
Display Output
1 P77(HSO)
2 P76(HSCK)
3 P75(SO)
4 P74(SI)
5 P73(SCK)
6 P72(PDO/PWM)
7 P71(INT4)
8 P70(INT3/TC3)
9 P07
VDD 42
(XTOUT)P22 41 Key Input
(XTIN)P21 40
(INT5/STOP)P20 39
P17 38 Compressor Heater Driving
P16 37
(TC2)P15 36
(PPG)P14 35 Outdoor Unit Motor Driving
(DVO)P13 34 Buzzer Driving
(INT2/TC1)P12 33 Remocon Input
(INT1)P11 32 Indoor Unit Motor Driving
(INTO)P10 31 Zero Crossing Detect
(AIN7)P67 30 Display Driving
(AIN6)P66 29
Stepping Motor
10 P06
11 P05
12 P04
13 P03
Compressor Relay Driving
14 P02
15 P01
(AIN5)P65 28
Auto Swing Driving
4-way Valve Driving
16 P00
(AIN4)P64 27 Fuction Select
(AIN3)P63 26
17 TEST
18 RESET
19 XIN
(AIN2)P62 25
Reset Circuit
Oscillation
(AIN1)P61 24
20 XOUT
21 (VASS)VSS
(AIN0)P60 23 Temperature Sensor Input
VAREF 22
32
DARLINGTON ARRAYS (KID65004)
IN1 1
IN2 2
IN 3 3
IN 4 4
IN5 5
IN6 6
IN7 7
GND 8
16 OUT 1
15 OUT 2
14 OUT 3
13 OUT 4
12 OUT 5
11 OUT 6
10 OUT 7
COMMON
OUTPUT
INPUT
10.5K‰
7.2K‰
GND
9 COMMON FREE
WHEELING DIODES
VOLTAGE REGULATOR (KIA7805AP-5VDC)
SCHEMATIC DIAGRAM
INPUT
100
100
10K
100K
500
240
0.3
200
3.3
K
OUTPUT
1
2
3
2K
6K
0.19K
1.4
2.7
K
30pF
28K
1K
K
Fin 2 is ground
for Cose 221A.
Case is ground
for Case 1.
5K
500
6K
5K
GND
VOLTAGE REGULATOR (KIA7812AP-12VDC)
INPUT
10K
10K
210
16K
100
300
200
36K
64K
300
50K
012
520
50
200
40
pF
OUTPUT
60K
26K
29K
20K
Pin 1. INPUT
2. GROUND
3. OUTPUT
20K
GND
(Equivalent Ciircuit)
33
RESET IC (KIA 7042P)
1
3
VCC
OUT
KIA70
42P
2
GND
INPUT
OUTLINE
GROUND
OUTPUT
34
6. REFRIGERANT CYCLE
INDOOR UNIT
OUTDOOR UNIT
HIGH PRESSURE SWITCH
INDOOR
HEAT EXCHANGER
M
UNION
SERVICE VALVE
FAN
M
FILTER
DISTRIBUTER
OUTDOOR
HEAT EXCHANGER
COMPRESSOR
CAPILLARY TUBE
Note) If the pipe length exceeds the standard length, add 30g of refrigerant per extra meter.
Model Name
Cooling
Heating
Contents
Capillary tube(
×L×
)
IDØ1.4 x 1000mm(6.0l/min) x 5EA
ODØ2.0 x 250mm
Charge Quantity
2000 g
35
Trouble
Is the
unit display
normal?
Is the power
applied to the
unit
NO
Check power supply mains
or interconnection wires
YES
YES
Outdoor unit does
not run?(note. 1)
NO
Is the
power normal?
check the voltage between
L & N of terminal
block
NO
Check the wiring of indoor
YES
Does
the compressor run
normally?
NO
YES
press the power ON/OFF
button on remote controller
YES
YES
NO
Indoor unit does
not run(note 1)
NO
Is the unit
display
mormal?
YES
Does the
beeper beep two
times?
Normal
Does
control PCB
Check the failure
code according to
the self diagnostic
(note 2)
NO
status LED repeat one
second "on and
off"?
NO
YES
check the
connecting
point of
magnetic
contactor
YES
• control PCB fault
• Micom or reset
IC fault
NO
Is the display
all off?
YES
YES
check the failure
code according to
the self-diagonostic
(note 2)
• Check the connector on display
PCB connected to control PCB
• Check the display PCB itself
• Check the remote signal receiver
• Check the connection between signal
receiver and control PCB
1
Neither Indoor Unit nor Outdoor Unit Runs
The power is applied to the unit
Rating voltage
Check the
Breaker or Fuse
under 90%
L
Check the voltage between
and
N
of terminal block
Rating voltage more than 90%
No
No
Check the indoor unit display
is the display all off?
Self Diagnostic
function is ON
Yes
Yes
Press the ON/OFF switch of
Remote Control
No
Check according to
self Diagnostic function
Is the indoor unit display all off?
Control P.C.B defect
Pull out the power plug
and then insert the power plug
after 5 second
Control P.C.B is normal
Recheck from the beginning
37
2
Outdoor Unit Runs but Indoor Unit Do Not Run
Check rotation of indoor fan
NO
Check the Fan Motor
bearing and fan
Rotate indoor fan by hand
YES
Check the power P.C.B.
The circuit for triac control
Rating voltage
under 90%
Check input Voltage of Fan
Motor connector at power P.C.B
Rating Voltage more than 90%
Open or short
Check the winding resistance of
Indoor unit fan motor
Change of fan motor
Normal
Check the fan motor capacitor
Check the connecting wire of
indoor fan motor
Run again
38
3
Outdoor Fa n Do Not Run
Rating voltage
L
Check the voltage between
and
Check the
N
of outdoor unit terminal
connecting wire
under 90%
Check the wiring
and voltage
Rating voltage
under 90%
L
Check the voltage between
and
and
N
of indoor unit terminal
within doors
Rating voltage
under 90%
Check the
connecting wire
L
Check the voltage between
2
of outdoor unit terminal
Check outdoor fan motor individually
39
4
Only Com pressor Do not Run
- Check the following at cooling mode
Check the voltage between
Check the connecting
wire between indoor
and outdoor.
Rating voltage
less than 90%
N
and
Y
of outdoor unit terminal
Rating voltage more than 90%
Check the control P.C.B
the circuit for relay
driving.
Rating voltage
less than 90%
N
Check the voltage between
and
Y
of indoor unit terminal
Rating voltage more than 90%
Check the magnetic contactor
Check the wiring of outdoor unit
NG
Change the magnetic
contactor.
Check the compressor
(Check the winding resistance)
Open or Short
Change the
compressor.
OK
Check the compressor capacitor
40
5
REMO TE CO NTRO LLER ASSMBLY FUNCTIO NAL TEST METHO D
TEST START
No
Power supply again
Power Supply
No
Is Display at the
beginning ON?
Select ON/OFF button
Check the Following
BATTERY SPRING
MICOM
PCB
Yes
No
Is Display at the
beginning ON?
LCD
Select Mode button
No
ERROR
Is it normal?
Select FAN SPEED button
No
Is it normal?
ERROR
L
Select FAN DIR. button
(
)
LL
No
ERROR
ERROR
Is it normal?
No
Is display at the
begining ON?
(Whenever you selectted Temp.
Button, it is changed by 1°C (18~32°C)
Select TEMP. Button (▲,▼)
Is it normal?
No
ERROR
Select ON/OFF button
41
No
No
No
No
ERROR
ERROR
ERROR
ERROR
Is LCD display OFF?
Select TIMER ON Button
Is it normal
Select Timer Enter Button
display?
TIMER
Select CANCEL Button
Is all display OFF?
Select ON/OFF Button
Select OFF (Timer) Button
(0.5~24 HOUR)
No
ERROR
ERROR
ERROR
Is it normal?
Select SLEEP Button
No
No
SLEEP MODE
Display ON?
Select SLEEP Button
Is display at the
beginning ON?
TEST OK!
42
8. EXPLODED DIAGRAM
1
INDOOR UNIT
NO
1
Part Code
3100090100
3100042301
3100602801
3108008600
3101501900
3106600210
3106903100
3100025000
3105200300
3100301600
3101501100
3100503901
3104398800
5EPK560120
3100042501
3100042603
3100042802
3100042903
3105100400
3102707930
3101402700
3100048310
3100043000
3107000400
3100087200
3104202700
3105501800
3104301010
3103401510
3103401610
3100090620
3100604700
Part Name
ASSY CABNET BODY
BASE MOTOR ASSY
BRACKET PAN DRAIN
MOTOR IDU
Quantity
Remarks
1
1
1
1
3
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
3
4
5
CUSHION MOTOR
SCROLL HOUSING
CAPACITOR MOTOR IDU
BLOWER ASSY
6
7
8
9
WASHER STOPPER
BASE
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
CUSHION BASE
BOX CONTROL
ASSY MAIN PCB
TRANS
PAN DRAIN ASSY
EVAPORATOR ASSY
PIPE DISCHARGE ASSY
PIPE SUCTION ASSY
SPRING SENSOR
HARNESS COIL SENSOR
COVER EVAP. L
ASSY COVER EVAP. R
COVER EVAP. TOP ASSY
CLIP THERMO
COVER HOUSING ASSY
PANEL CONTROL
WINDOW
ASSY CONTROL PCB
KNOB SELECTION
KNOB POWER
ASSY PANEL FRONT
BRACKET FRONT L
44
NO
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Part Code
3100604800
3102201600
310P40086E
3108005300
3101101300
3100702100
3106501430
3106501530
3107801000
3107802200
3106700100
3106301100
3106503000
3101203400
3101408000
3100090200
3102403720
3102500901
3102501001
3107900100
3104504700
3100056510
3108912340
Part Name
BRACKET FRONT R
Quantity
Remarks
1
1
1
1
1
1
5
1
1
1
1
1
6
2
1
1
1
1
1
4
8
1
1
FRAME DISCHARGE
SWING MOTOR ASSY
MOTOR STEPPING
CASE MOTOR
BUSHING MOTOR
BLADE HORIZONTAL 1
BLADE HORIZONTAL 2
LINK GUIDE R
LINK M
CAM
BAR VERTICAL
BLADE VERTICAL
PUSH MOUNT TIE
COVER BOX CONTROL
ASSY COVER TOP
GRILLE SUCTION
GUIDE FILTER L
GUIDE FILTER R
MAGNET
PLATE MAGNET
FILTER AIR ASSY
TERMINAL BLOCK
45
2
OUTDOOR UNIT
NO
1
Part Code
3100041704
3107103000
3107103200
7400208411
7392801211
3102800300
3100031223
3102402100
3100041100
3100041201
3105401300
3105401200
3106002300
3100086810
3100079310
3101407900
3100031702
3104201601
3108912340
5SC0202700
3109508000
3105300400
3108008500
3101802001
3100031400
3100031500
3100041400
3102102000
3101402500
Part Name
BASE PAN PAINT ASSY
COMPRESSOR ASSY
CUSHION COMP
Quantity
Remarks
1
1
4
4
4
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
3
4
WASHER PLAIN
5
NUT LOCK
6
CRANKCASE HEATER
CONDENSER ASSY
GRILLE COND
7
8
9
GUIDE POST P/T ASSY
BRK SERVICE P/TAS
SERVICE VALVE G
SERVICE VALVE L
BOLT HEX
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
PIPE REVERSING ASSY
PIPE FILTER ASSY
COMP COVER
PLT PARTITION ASSY
PANEL CONTROL
TERMINAL BLOCK
POWER RELAY
CAPACITOR DUAL
SUPPORT MOTOR
MOTOR ODU
FAN PROPELLER
CABINET FRONT P/T AS
CABINET SIDE P/T AS
PANEL TOP ASS’Y
GRILLE DISCHARGE
COVER SERVICE
47
DAEWOO ELECTRONICS CO., LTD.
686, AHYEON-DONG MAPO-GU SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX: DWELEC K28177-8
CABLE: “DAEWOOELEC”
FAX: 02) 360-8184
TEL: 02) 360-8182/8178~9
PRINTED DATE: APR.1999
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