LG LWC1262ACG / R1000 / R-1000 / R1200 / R-1200 / R1201H Service Manual ▷ View online
13
8
Foam-Strip
380(14 / ")
1
Thermostat
Operation
2
3
4
9
8
7
6
5
Off
Med
Fan
Fan
Low
Fan
Fan
High
Cool
Cool
Med
Cool
Cool
Low Cool
Screw(Type A)
Screw(Type A)
Power cord
31
32
—17—
4. TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS
unit: mm(inch)
10. Slide the unit into the cabinet.(See Fig. 28)
CAUTION: For security purpose, reinstall screws(Type
A) at the cabinet's sides.
11. Cut the foam-strip
⑧
to the proper length and insert
between the upper and lower window sash.
(See Fig. 29)
(See Fig. 29)
12. Attach the window locking bracket
⑬
with a type C
screw. (See Fig. 30)
13. Attach the front grille to the cabinet by inserting the
tabs on the grille into the tabs on the front of the
cabinet. Push the grille in until it snaps into
place.(See Fig. 31)
cabinet. Push the grille in until it snaps into
place.(See Fig. 31)
14. Lift the inlet grille and secure it with a type A screw
through the front grille.(See Fig. 32)
Figure 28
Figure 29
Figure 30
Figure 33
Figure 32
Figure 31
13
8
Foam-Strip
380(14 / ")
1
Thermostat
Operation
2
3
4
9
8
7
6
5
Off
Med
Fan
Fan
Low
Fan
Fan
High
Cool
Cool
Med
Cool
Cool
Low Cool
Screw(Type A)
Screw(Type A)
Power cord
31
32
—17—
4. TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS
unit: mm(inch)
10. Slide the unit into the cabinet.(See Fig. 28)
CAUTION: For security purpose, reinstall screws(Type
A) at the cabinet's sides.
11. Cut the foam-strip
⑧
to the proper length and insert
between the upper and lower window sash.
(See Fig. 29)
(See Fig. 29)
12. Attach the window locking bracket
⑬
with a type C
screw. (See Fig. 30)
13. Attach the front grille to the cabinet by inserting the
tabs on the grille into the tabs on the front of the
cabinet. Push the grille in until it snaps into
place.(See Fig. 31)
cabinet. Push the grille in until it snaps into
place.(See Fig. 31)
14. Lift the inlet grille and secure it with a type A screw
through the front grille.(See Fig. 32)
Figure 28
Figure 29
Figure 30
Figure 33
Figure 32
Figure 31
—18—
4.2 PIPING SYSTEM
Figure 34 is a brief description of the important components and their function in what is called the refrigeration
system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle.
system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle.
MOTOR
COMPRESSOR
OIL
(LIQUID REFRIGERANT)
CAPILLARY TUBE
OUTSIDE COOLING
AIR FOR REFRIGERANT
PASS THROUGH
AIR FOR REFRIGERANT
PASS THROUGH
SUCTION LINE
COOL LOW PRESSURE VAPOR
COOL LOW PRESSURE VAPOR
COOLED
AIR
AIR
COMPLETE LIQUID
BOIL OFF POINT
BOIL OFF POINT
LIQUID
PRESSURE
DROP
PRESSURE
DROP
ROOM AIR HEAT LOAD
VAPOR INLET
HOT
DISCHARGED
AIR
DISCHARGED
AIR
LIQUID OUTLET
HIGH PRESSURE VAPOR
LIQUID REFRIGERANT
LOW PRESSURE VAPOR
ROOM AIR CONITIONER
EVAPORATOR COILS
CONDENSER COILS
CYCLE OF REFRIGERATION
CAPILLARY TUBE
COMPRESSOR
BLOWER
EVAPORATOR COIL
CONDENSER COIL
FAN
MOTOR
Figure 34
—19—
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, and the other is ineffective Air
Conditioning caused by a defect in the refrigeration circuit and improper application.
The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air
Conditioning caused by a defect in the refrigeration circuit and improper application.
Unit runs but poor cooling.
Ineffective Cooling
Check outdoor coil
(heat exchanger) & the fan
operation.
(heat exchanger) & the fan
operation.
Check gas leakage.
Repair gas leak.
Replacement of unit if the
unit is beyond repair.
unit is beyond repair.
Satisfactory operation with
temperature difference of
inlet & outlet air ;
44~50
temperature difference of
inlet & outlet air ;
44~50
°
F(7~10
°
C)
Check heat load
increase.
increase.
Clean condenser.
Not on separate circuit.
Check inside gas
pressure.
pressure.
Adjusting of refrigerant
charged.
charged.
Malfunction of compressor.
Replacement of
compressor.
compressor.
Check cold air circulation
for smooth flow.
for smooth flow.
Dirty indoor coil
(Heat exchanger)
(Heat exchanger)
Correct above trouble
Check clogging in refrigera-
tion circuit.
tion circuit.
Repair clogging in refrigera-
tion circuit.
tion circuit.
Obstruction at air outlet
Clogged of air filter.
Malfunction of fan
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