LG LWC1260ACG Service Manual ▷ View online
1.4 FEATURES
1.5 CONTROL LOCATIONS
1.5.1 COOLING ONLY MODEL
• VENTILATION
The ventilation lever must be in the CLOSE posi-
tion in order to maintain the best cooling condi-
tions.
When fresh air is necessary in the room, set the
ventilation lever to the OPEN position.
The damper is opened and room air is exhausted.
tion in order to maintain the best cooling condi-
tions.
When fresh air is necessary in the room, set the
ventilation lever to the OPEN position.
The damper is opened and room air is exhausted.
Before using the ventilation feature, make a ventila-
tion kit. First pull down part
tion kit. First pull down part
£
to horizontal line with
part
£
.
• THERMOSTAT
Thermostat will automatically control the tempera-
ture of the room. Select a higher number for a
cooler temperature in the room. The temperature
is selected by positioning the knob to the desired
position.
The 5 or 6 position is a normal setting for average
conditions.
ture of the room. Select a higher number for a
cooler temperature in the room. The temperature
is selected by positioning the knob to the desired
position.
The 5 or 6 position is a normal setting for average
conditions.
• OPERATION
0
: Turns the air conditioner off.
HIGH FAN ( ) : High fan speed operation
without cooling.
LOW FAN ( ) : Low fan speed operation
without cooling.
HIGH COOL ( ) : Cooling with the high fan
speed operation.
LOW COOL ( ) : Cooling with the low fan
speed operation.
—5—
• Designed for COOLING ONLY.
• Power and whisper cooling.
• Slide-in and slide-out chassis for simple installa-
• Power and whisper cooling.
• Slide-in and slide-out chassis for simple installa-
tion and service.
• Side air-intake, side cooled-air discharge.
• Built-in adjustable THERMOSTAT (THERMISTOR).
• Washable one-touch filter.
• Compact size.
• Reliable and efficient rotary compressor is
• Washable one-touch filter.
• Compact size.
• Reliable and efficient rotary compressor is
equipped.
VENT
CLOSE
OPEN
1
2
3
4
5
6
7
MED
LOW
HIGH
THERMOSTAT
OPERATION
8
9
CO
O
LE
R
FAN
COOL
LOW
Part A
Part B
0
1
2
3
4
5
6
7
THERMOSTAT
OPERATION
8
9
CO
O
LE
R
FAN
COOL
0
NOTE
1.5.2 COOLING ONLY MODEL WITH REMOTE CONTROL
—6—
12H
2H
30°C
20°C
ƒU
DISPLAY COOL/FAN
It indicates COOL/FAN.
ƒU
TEMPERATURE SETTING LAMP.
You can regulate room temperature at your most
comfortable degrees by turns.
comfortable degrees by turns.
ƒU
TIMER
It displayes the operating of timer.
ƒU
OPERATION SWITCH
When you cannot using Remote Controller, push
this button.
When you first turn on, the set is on the High cool
mode and the Temp. 22°C.
When you push this button again, the set is OFF.
this button.
When you first turn on, the set is on the High cool
mode and the Temp. 22°C.
When you push this button again, the set is OFF.
ƒU
SIGNAL RECEPTOR
—22—
4. TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS
unit: mm(inch)
o
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 made to figure 21 to follow the refrigeration cycle and the flow of the refrigerant in the
cooling cycle.
system. Reference should made to figure 21 to follow 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 21
—31—
COMPLAINT
CAUSE
REMEDY
Check voltage. See the limits on the preceeding
page. If not within limits, call an electrician.
page. If not within limits, call an electrician.
Check the wire connections, if loose, repair or
replace the terminal. If wires are off, refer to wiring
diagram for identification, and replace. Check wire
locations. If not per wiring diagram, correct.
replace the terminal. If wires are off, refer to wiring
diagram for identification, and replace. Check wire
locations. If not per wiring diagram, correct.
Check for continuity, refer to the wiring diagram
for terminal identification. Replace the switch if
circuit is open.
for terminal identification. Replace the switch if
circuit is open.
Check the position of knob If not at the coldest
setting, advance the knob to this setting and
restart unit.
Check continuity of the thermostat. Replace
thermostat if circuit is open.
setting, advance the knob to this setting and
restart unit.
Check continuity of the thermostat. Replace
thermostat if circuit is open.
Check the capacitor.
Replace if not within ±10% of manufacturers
rating. Replace if shorted, open, or damaged.
Replace if not within ±10% of manufacturers
rating. Replace if shorted, open, or damaged.
Check the compressor for open circuit or
ground. If open or grounded, replace the
compressor.
ground. If open or grounded, replace the
compressor.
Check the compressor overload, if externally
mounted. Replace if open. (If the compressor
temperature is high, remove the overload, cool it,
and retest.)
mounted. Replace if open. (If the compressor
temperature is high, remove the overload, cool it,
and retest.)
Check the voltage. See the limits on the preced-
ing page. If not within limits, call an electrician.
ing page. If not within limits, call an electrician.
Check overload, if externally mounted.
Replace if open. (If the compressor temperature
is high, remove the overload, cool, and retest.)
Replace if open. (If the compressor temperature
is high, remove the overload, cool, and retest.)
If not running, determine the cause. Replace if
required.
required.
Remove the cabinet. inspect the interior surface
of the condenser; if restricted, clean carefully
with a vacuum cleaner (do not damage fins) or
brush. Clean the interior base before
reassembling.
of the condenser; if restricted, clean carefully
with a vacuum cleaner (do not damage fins) or
brush. Clean the interior base before
reassembling.
If condenser fins are closed over a large area
on the coil surface, head pressures will increase,
causing the compressor to cycle. Straighten the
fins or replace the coil.
on the coil surface, head pressures will increase,
causing the compressor to cycle. Straighten the
fins or replace the coil.
Voltage
Wiring
Rotary
Thermostat
Capacitor (Discharge
capacitor before
servicing.)
capacitor before
servicing.)
Compressor
Overload
Voltage
Overload
Fan motor
Condenser air flow
restriction
restriction
Condenser fins
(damaged)
(damaged)
Compressor will not run,
but fan motor runs.
but fan motor runs.
Compressor cycles
on overload.
on overload.
Compressor cycles on
overload (Cont'd)
overload (Cont'd)
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