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Service Manual - Page 1
website http://www.lgservice.com
LG
LG Room Air Conditioner
SERVICE MANUAL
MODELS: LW1800PR LW1800ER LW1800ERZ3 LW1500PR LW1500PRY3 LWP1830WAL LWP1820PDL LWP1820PEL LWC182PLMM0 LWC183PLMD1 LWC212PLMM0 LW1804ER LW1800PRZ3 HBLG1803R
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Service Manual - Page 2
... Parts...16 Air Handling Parts ...17 Electrical Parts ...18 Refrigerating Cycle...20 Schematic Diagram...23 Electronic Control Device ...23 Wiring Diagram...25 Components Location ...26 Troubleshooting Guide ...28 Piping System ...28 Troubleshooting Guide ...29 Electrical Parts Troubleshooting Guide ...31 Electric Parts ...35 Exploded View ...41 Replacement Parts List ...43
2 Room Air Conditioner
Service Manual - Page 5
...
D
W
Cool Energy
Saver
F1 LOW
'F
F2 MED
F3 HIGH
Fan
Dry
Timer
TEMP
MODE
TIMER
FAN SPEED
POWER
H
Dimension W H D
Model
mm(inch) mm(inch) mm(inch)
ALL MODELS
660(25 31/32) 428(16 27/32) 680(26 27/32)
Service Manual 5
This symbol alerts you to the air conditioner.
NOTICE This symbol indicates special notes.
Service Manual - Page 7
... Electric Heater Model) 3. Install the unit ...Fig. 2
2. Service Manual 7 Install the unit a little obliquely outward not to prevent air and insects from...Installation
Installation
Select the Best Location
1. To avoid vibration and noise, make sure the air conditioner...AIR
30-60"
1/4 Bubble
Level
AWNING
FENCE
HEAT RADIATION
About 1/2" Over 20"
Figure 1
Installation Check
The setting...
Service Manual - Page 11
Slide the unit into the tabs on the front of room air conditioner is now completed. Cut the Foam-strip to the cabinet by using screws (Type C). (See Fig. 10)
7. ... lower window sash. (See Fig. 12)
Figure 10
Screw Figure 11
Figure 12
9. 5. Figure 14
Installation
Screw(Type C)
Power Cord Screw (Type A)
Foam-Strip
Window locking bracket
TEMP TIME SPFAENED MODE
POWER
Service Manual 11
Service Manual - Page 15
...10132; Med[F2]➔ High[F3]... }
Heating Model: 2 steps {High [F2] ➔ Low[F1] ➔ High[F2]... }
ON/OFF TIMER BUTTON Set the time of 16°C to 30°C. s LWP1820PDL/PEL DISPLAY
6
4 5 3 2 6
Operation
REMOTE CONTROL
1
2 1
4
5
3
7
4...button is set by 1 hour.
6 SIGNAL RECEIVER
7 AUTO SWING The vertical louver swings horizontally by 2˚C 1 hour later. Service Manual 15
Service Manual - Page 21
... which you installed as the system was opened. 2) Connect the charging cylinder as follows : 1) Refrigeration cycle systems ...d. Service Manual 21
Turn off connection. Use sil-fos brazing and braze pinch-off tube ports, leaving the valves open. 4. When replacing the refrigeration cycle...take it to
Discharge the refrigerant system using a FreonTM recovery System. Repeat steps ...
Service Manual - Page 25
... PCB ASSEMBLY
7
THERMISTOR
8
PLASMA FILTER ASSY
Schematic Diagram
s MODEL : LW1800ERZ3/LW1800PR, HBLG1803R LW1800ER/LWP1830WAL
1
BK
CN-MOTOR
GN/YL
BL
(GN)
MOTOR...AIR FILTER ASSEMBLY
8
s MODEL : LW1500PRY3/LW1500PR LW1800PRZ3/LW1804ER LWC182PLMD1
1 5
7 2
6
3
4
8
Q'TY PER SET
1 1 1 1 1 1 1 1
S: Service Parts N: Non Service Parts
REMARKS
S S S S S S S S
Service Manual 25 s MODEL...
Service Manual - Page 29
... circuit and improper application. Service Manual 29 Troubleshooting Guide
Troubleshooting Guide
In general, possible trouble is classified in refrigeration circuit. Replacement of compressor. Satisfactory operation with temperature difference of inlet & outlet air ; 44~50°F(7~10°C)
Replacement of unit if the unit is beyond repair. Repair clogging in two kinds.
Obstruction...
Service Manual - Page 30
... motor resistance ( )
Irregular motor insulation ( )
Replacement of compressor (Motor damaged)
30 Room Air Conditioner
Regular but fails to start.
Irregular motor resistance ( ).
Gas leakage of feeler bulb of thermostat
Check of fan motor.
Irregular motor insulation ( ). Capacitor check. Troubleshooting Guide
Fails to start. Replacement of compressor (locking of power voltage...
Service Manual - Page 31
Electrical Parts Troubleshooting Guide
Troubleshooting Guide
Possible Trouble 1
The unit does not operate. YES
Is the Trans output power
NO
about AC 14V?
NO • Check the Main PCB pattern. YES
• Replace the Trans. YES
• Replace D02D~D05D. • Replace IC01D.
NO
(The No.14 of IC01D
NO
DC 12V?
YES
• Replace IC02D.
Service Manual 31
...
Service Manual - Page 35
YES
• Replace the Trans. YES
• Replace D02D~D05D. • Replace IC01D. Is the reset circuit OK?
ElectrIc Parts
Troubleshooting Guide
Possible Trouble 1
The unit does not operate.
YES
Is the Trans. output shorted? NO
(The No.14 of Micom
DC 5V? NO Is the voltage No.40 ...
Service Manual - Page 45
...REMOTE CONTROLLER ASSEMBLY
-
R
5403A20062B
R
2520UMKK2AA
R
5901A20010A
R
-
CONDENSER ASSEMBLY, BENT
5403A20062B
COMPRESSOR SET
2520UMTC2AA
FAN ASSEMBLY,AXIAL
5901A20010A
COIL ASSEMBLY, REVERSING VALVE
-
FILTER ASSEMBLY, AIR...AIR GUIDE ASSEMBLY
5239A20002A
AIR GUIDE... R
- Replacement Parts List
LOCATION...3H02932C
R
6711A20034G
R
Service Manual 45 REMARK LW1804ER
...
Service Manual - Page 47
... R R
Service Manual 47 DESCRIPTION
...AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY, FIRST FAN ASSEMBLY, TURBO ISOLATOR, COMP TUBE ASSEMBLY,CAPILLARY TUBE ASSY, CONDENSER OUT TUBE ASSEMBLY, REVERSING VALVE, REVERSING CONDENSER ASSEMBLY, BENT COMPRESSOR SET FAN ASSY, AXIAL COIL ASSEMBLY, REVERSING VALVE SWITCH, PRESSURE O.L.P CAPACITOR, DRAWING CLAMP, SPRING
Replacement Parts List
PART...
Service Manual - Page 49
...5210A21099E 5210A21099F
REMARK
Service Manual 49
DESCRIPTION
...REMOTE CONTROLLER ASSEMBLY PWB(PCB) ASSEMBLY,MAIN(AC) PWB(PCB) ASSEMBLY,MAIN(DC) MOTOR ASSEMBLY,SINGLE DAMPER,VENTILATION ORIFICE MOUNT,MOTOR TUBE,CAPILLARY BEND TUBE ASSEMBLY,DISCHARGE SINGLE AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY,FIRST FAN ASSEMBLY,TURBO ISOLATOR,COMP CONDENSER ASSEMBLY,BENT COMPRESSOR SET...
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