LG LWG0760ACG / LWG0760ACG / LWG0760BCG / LWG0960ACG / LWG0960BCG Service Manual ▷ View online
—25—
ROOM AIR CONDITIONER VOLTAGE LIMITS
NAME PLATE RATING
MINIMUM
MAXIMUM
220-240V ± 10 198V
264V
Check voltage at outlet. Correct if none.
Check voltage to rotary switch. If none, check
power supply cord. Replace cord if circuit is open.
Check switch continuity. Refer to wiring diagram
for terminal identification. Replace switch if
defective.
Connect wire. Refer to wiring diagram for terminal
identification. Repair or replace loose terminal.
Test capacitor.
Replace if not within ±10% of manufacturer's
rating. Replace if shorted, open, or damaged.
Fan blade hitting shroud or blower wheel hitting
scroll. Realign assembly.
Units using slinger ring for condenser fan must
have
1
/
4
to
5
/
16
inch clearance to the base. If it hits
the base, shim up the bottom of the fan
motor with mounting screw(s).
Check fan motor bearings; if motor shaft will not
rotate, replace the motor.
Check voltage. If not within limits, call an
electrician.
Test capacitor.
Check bearings. Does the fan blade rotate freely?
If not, replace fan motor.
Pay attention to any change from high speed to
low speed. If the speed does not change, replace
the motor.
No power
Power supply cord
Rotary switch
Wire disconnected or
connection loose
Capacitor (Discharge
capacitor before testing.)
Will not rotate
Revolves on overload.
Fan motor will not run.
Fan motor runs
intermittently
COMPLAINT CAUSE REMEDY
—26—
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.
6. EXPLODED VIEW
—36—
17
34
64
60
62
61
58
59
6
29
28
31
26
23
25
18
19
20
27
21
29
30
3
2
10
9
7
1
22
24
63
16
15
14
13
12
11
8
32
A
D
B
5
4
37
36
54
48
47
42
55
57
41
44
53
45
35
56
46
39
C-1
40
33
65
50
49
41
45
43
36
51
48
C-2
35
39
52
47
40
38
—36—
7. REPLACEMENT PARTS LIST
• MODEL: LWG0760ACG, LWG0760BCG, LWG0960ACG, LWG0960BCG
PART NO.
DESCRIPTION
RE-
MARK
3531A20034B
3531A20034G
3531A20034B
3531A20034G
3530A10026A
3530A10027A
5231A20004A
4758A20002A
4758A30008A
4758A20005A
4758A30008A
4758A20005A
3091A30004B
4984AR4361A
5416A20017A
5416A20013H
4810AR4155A
4810AR4155B
1NHA0801206
4986V-L011G
4986A30001A
6750U-L014A
6750A3001C
4970U-L002A
4970A30009A
3550U-L002D
3550A30048A
4H01058A
4H00947A
3041A30005M
4790A10008A
3072A10001A
5238A10001A
4901A30001A
4960A20002A
4681A20027D
4H00006D
4000W4A003A
5901A10005A
4998A10001A
5900AR1167B
3H02932B
4948A30003A
4800A30001A
5421A20036A
5421A20036C
5403A20024D
5403A20024C
4H02023A
FRONT GRILLE ASS'Y
FRONT GRILLE
INLET GRILLE
AIR FILTER ASS'Y
HORIZONTAL LOUVER
VERTICAL LOUVER
CABINET ASS'Y
COMP & ACCESSORY ASS'Y
ANTI-VIBRATION BUSH
COMPRESSOR
BRACKET, WASHER
HEXAGON NUTS
GASKET
OVERLOAD PROTECTOR
SPRING
TERMINAL COVER
GASKET NUT
TERMINAL COVER NUT
BASE PAN WELD ASS'Y
BARRIER, SINGLE
SCROLL
AIR GUIDE
VENTILATION DAMPER
MOTOR MOUNT
MOTOR ASS'Y
SCREW, TAP
SCREW
SHROUD
BLOWER
FAN
CLAMP SPRING
ORIFICE
BRACE
EVAPORATOR ASS'Y
CONDENSER ASS'Y
RUBBER
1
1
1
1
1
2
1
1
3
1
3
3
1
1
1
1
1
1
1
1
1
1
1
1
1
4
2
1
1
1
2
1
1
1
1
2
R
R
R
R
R
R
R
N
R
R
N
N
R
R
R
R
R
R
R
R
R
R
R
R
R
N
N
R
R
R
R
R
R
R
R
R
LWG0760ACG
LWG0760BCG
LWG0960ACG
LWG0960BCG
SERIAL
NO
.
Q'TY
PER SET
A
1
2
3
4
5
6
B
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
R: Service Parts
N: Non Service Parts
N: Non Service Parts
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