LG LWJ0561ACG Service Manual ▷ View online
—12—
3.4 HOW TO INSTALL
• WHEN USING GASKET
2
1
2
F
E
C
3
G
A
B
RIGHT SIDE
HORIZONTAL
LINE
LINE
D
1. WINDOW (A - WIDTH, B - HEIGHT)
2. GASKET
3. WALL
2. GASKET
3. WALL
A
B
C
D
E
F
G
487mm
324mm
30mm
0~25mm
OVER 240mm
5~10mm
-5~5mm
(19
3
/
16"
)
(12
3
/
4"
)
(1
1
/
16"
)
(0~1")
(9
15
/
32"
)
(
3
/
16"
~
3
/
8"
)
(-
3
/
16"
~
3
/
16"
)
4. TROUBLE SHOOTING GUIDE
4.1 OUTSIDE DIMENSION (unit : mm)
370
472
312
Figure 24
Figure 25
—13—
4.2 PIPING SYSTEM
Following is a brief description of the important components and their function in what is called the refrigeration
system. Reference should be made to Figure 26 to follow the refrigerating cycle and the flow of the refrigerant in
the cooling cycle.
system. Reference should be made to Figure 26 to follow the refrigerating cycle and the flow of the refrigerant in
the cooling cycle.
COOLED
AIR
AIR
HOT
DISCHARGED
AIR
DISCHARGED
AIR
MOTOR
COMPRESSOR
ROOM AIR HEAT LOAD
CAPILLARY TUBE
(LIQUID REFRIGERANT)
LIQUID OUTLET
VAPOR INLET
COMPLETE LIQUID
BOIL OFF POINT
BOIL OFF POINT
SUCTION LINE
COOL LOW PRESSURE VAPOR
COOL LOW PRESSURE VAPOR
LIQUID
PRESSURE
DROP
PRESSURE
DROP
DISCHARGE
LINE
NOT HIGH PRESSURE
VAPOR
OUTSIDE COOLING
AIR FOR REFRIGERANT
PASS THROUGH
AIR FOR REFRIGERANT
PASS THROUGH
EVAPORATOR COILS
CONDENSER COILS
ROOM AIR CONDITIONER
CYCLE OF REFRIGERATION
HIGH PRESSURE VAPOR
LIQUID REFRIGERANT
LOW PRESSURE VAPOR
OIL
CONDENSER COILS
FAN
MOTOR
CAPILLARY
TUBE
TUBE
BLOWER
EVAPORATOR
COILS
COILS
Figure 26
—14—
4.3 TROUBLESHOOTING GUIDE
In general, possible trouble is classified in two kinds.
The one is called Starting Failure which is caused from an electrical defect. The other is Ineffective Air
Conditioning caused from a defect in the refrigeration circuit and improper application.
The one is called Starting Failure which is caused from an electrical defect. The other is Ineffective Air
Conditioning caused from a defect in the refrigeration circuit and improper application.
Unit is running but cooling is ineffective.
Ineffective Cooling
Satisfactory operation
with temperature
difference of inlet & outlet
air; 44~50°F (7~10°C)
Replacement of unit if
the unit is beyond repair.
Check outdoor coil
(heat exchanger) and
fan operation.
Check heat load
increase.
Check cold air
circulation for smooth
flow.
Check gas leakage.
Clean condenser.
Not on separate circuit
Check inside gas
pressure.
Adjust refrigerant
charge.
Malfunction of
compressor.
Replacement of
compressor.
Check clogging in refrigera-
tion circuit.
Repair clogging in
refrigeration circuit.
Dirty indoor coil
(heat exchanger)
Repair gas leak.
Malfunction of fan.
Clogging of air filter.
Obstruction at air outlet.
Remove obstruction.
—15—
Fails to Start
Improper thermostat
setting
Loose terminal
connection
Improper wiring
Check of power source.
Drop of power voltage.
Capacitor check.
Replacement.
Check of control switch
setting.
Compressor fails only to
start.
Defect of compressor
capacitor.
Replacement of compressor
(Motor damaged).
Irregular motor insulation (
Ω
)
Irregular motor resistance (
Ω
)
Check of circuit breaker
and fuse.
and fuse.
Gas leakage of feeler
bulb of thermostat.
bulb of thermostat.
Check control switch.
Fan only fails to start.
Improper wiring.
Defect of fan motor
capacitor.
capacitor.
Replacement of fan motor.
Regular but fails to start.
Replacement of compressor.
(Locking of piston, metal.)
Irregular motor
resistance (
resistance (
Ω
)
Irregular motor
insulation (
insulation (
Ω
)
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