LG LWG0760ACG / LWG0760QCG / LWG0820ACG / LWG0821ACG / LWG0960AAG / LWG0960ACG / LWG0960ACN / LWG0960ACS / LWG0960QAS / LWG0960QCG / LWG0960QAG / KC10WR / LWG0761PCG Service Manual ▷ View online
—28—
COMPLAINT
CAUSE
REMEDY
If cracked, out of balance, or partially missing,
replace it.
replace it.
If cracked, out of balance, or partially missing,
replace it.
replace it.
Tighten it.
If knocking sounds continue when running or
loose, replace the motor. If the motor hums or
noise appears to be internal while running,
replace motor.
loose, replace the motor. If the motor hums or
noise appears to be internal while running,
replace motor.
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.
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.
If not within limits, call an electrician.
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.)
Fan
Blower
Loose clamper
Worn bearings
Voltage
Wiring
Rotary
Thermostat
Capacitor (Discharge
capacitor before servicing.)
capacitor before servicing.)
Compressor
Overload
Voltage
Overload
Fan motor noise.
Compressor will not run,
but fan motor runs.
but fan motor runs.
Compressor cycles on
overload.
overload.
5. SCHEMATIC DIAGRAM
5.1 CIRCUIT DIAGRAM
• MODEL : WG0760ACG, LWG0960ACG, LWG0820ACG, LWG0821ACG, LWG0720ACG
—30—
PART NO.
LWG0760ACG
LWG0960ACG LWG0820ACG LWG0821ACG LWG0720ACG
3H02255E/2H01580M/3H01652N
2H00677G
3H03671B
2H00598E
4681A20027D
4681A20027E
6120AR2194A 6120AR2194C
6120AR2194G
6120AR2194X
2H01109L
6750V-L014A 6750A30001C
6750A30001D
6750U-L044A
5416A20017A
5416A20013H
5416A20013F
5416A20013K
5416A20001H
POWER CORD
ROTARY SWITCH
FAN MOTOR
CAPACITOR
THERMOSTAT
OVERLOAD PROTECTOR
COMPRESSOR
1
2
3
4
5
6
7
1
1
1
1
1
1
1
S
S
S
S
S
S
S
LOCATION
NO.
DESCRIPTION
RE-
MARKS
Q'TY
PER SET
1
3
6
4
2
7
5
MOTOR
COMP.
P.T.C
BR(YL)
S: Service Parts
N: Non Service Parts
N: Non Service Parts
—31—
• MODEL : LWG0760BCG, LWG0960BCG
4
3
6
5
7
2
1
9
8
BR(YL)
PART NO.
LWG0760BCG
LWG0960BCG
3H02255E/2H01580M/3H01652N
2H00598E
4681A20027D
6120AR2194A
6120AR2194C
2H01109L
6750V-L014A
6750A30001C
5416A20017A
5416A20013H
2H01102A
2H01316C
POWER CORD
ROTARY SWITCH
FAN MOTOR
CAPACITOR
THERMOSTAT
OVERLOAD PROTECTOR
COMPRESSOR
SYNCHRNOUS MOTOR
ROCKER SWITCH
1
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
1
1
S
S
S
S
S
S
S
S
S
LOCATION
NO.
DESCRIPTION
RE-
MARKS
Q'TY
PER SET
S: Service Parts
N: Non Service Parts
N: Non Service Parts
—32—
• MODEL : LWG0760PCG, LWG0960PCG, LWG0720NCG, LWG0820PCG
1
6
4
5
2
7
3
9
8
MOTOR
RD
BK
BL
BL
BK
RD
BR
BR
BL
BR
BL
OR(BR)
BK
RD
RD
BK
OR(BR)
YL
F
C
H
CAPACITOR
PTC
R
C
COMP.
TRANS-
FORMER
FORMER
SYNC.
MOTOR
S
RD
THERMISTOR
BK
OR(BR)
BK(BR)
POWER INPUT
(Plain)
CN-TH1
RY-LO
RY-MED
RY-SYNC
CN-SYNC
CN-DISP1
CN-DISP2
DISPLAY P.W.B ASSY
RY-COMP
ZNR01J
MAIN P.W.B ASSY
FUSE 250V/2A
4
3
RY-HI
GN(GN/YL)
WH(BL)
(Ribbed)
YL
OLP
PART NO.
LWG0760PCG
LWG0960PCG
LWG0720NCG
LWG0820PCG
3H02255E/2H01580M/3H01652N
3H03671B
2H00677G
4681A20027D
4681A20027E
5416A20017A
5416A20013H
5416A20001H
5416A20013F
6871A20061T
6871A20061Q
6871A20061T
6871A30017E
6871AQ30017B 6871A30017E
6323AQ2333K
6120AR2194A
6120AR2194C
6120AR2194X 6120AR2194G
6631AQ3201B
6750U-L014A
6750A30001C
6750U-L044A
6750A30001D
POWER CORD ASS’Y
MOTOR ASS’Y
COMPRESSOR
MAIN P.W.B ASSY
DISPLAY P.W.B ASS’Y
THERMISTOR
CAPACITOR, SH
CONNECTOR ASS’Y
OVERLOAD PROTECTOR
1
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
1
1
S
S
S
S
S
S
S
S
S
LOCATION
NO.
DESCRIPTION
RE-
MARKS
Q'TY
PER SET
S: Service Parts
N: Non Service Parts
N: Non Service Parts
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