LG WM1375HW Service Manual ▷ View online
12
6. WIRING DIAGRAM
/
PROGRAM CHART
RD BL
YL
WH
BL SB
MAIN PWB
NA
VL BL
SB
BL RD
WH
YL
BL
BL
YL
RD
RD
FUSE
DOOR LOCK S/W
DRAIN PUMP
YL
BN
BK
BK
BK
BK
BK
U
V
W
GN
/
YL
BK
BK BK
RD
WASHING
HEATER
HEATER
INLET
VALVE
VALVE
HS1
HS2
HS3
GND
MOTOR
PRESSURE
SENSOR
THERMISTOR
n
"n" PIN CONNECTOR
TERMINAL+HOUSING (#250)
RING TERMINAL GROUND
RING TERMINAL GROUND
Base/Line
3854ER3001X
TERMINAL (#250)
(S)
(S) (G)
H
O
T
O
T
BN
BK
OR
RD BL
YL
VL
SB OR WH BK
SB
WH BK OR VL
1 3 4 2
1 3 4 2
1 3 4 2
6 5 4 3 2 1
6 5 4
6 5 4
1 2 3
1 2 3
1 2 3
2 1
2 1
2 1
1 3 2
1 3 2
1 3 2
1
3 2 1
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
6
6
6
1 2
1 2
1 2
DISPLAY
PWB
PWB
RD
NA
SB
2
3
1
2
3
1
YL
WH
2 1
2 1
2 1
BK
WH
WH
NA
C P
M
A
I
N
B
L
E
A
C
H
L
E
A
C
H
3
2
1
3
2
1 2 3
1 2 3
1 2 3
RD BN
WH
BK
GN
/
YL
GN
POWER
CORD
WH
RD
NOISE
FILTER
3 2 1
3 2 1
3 2 1
3 2 1
*
*
Cool-down
**Approx.
(Minutes)
* Wash time is in minutes.
** The total working time will vary with the load size,
water temperature and ambient temperature.
** The total working time will vary with the load size,
water temperature and ambient temperature.
Soak
102
55
54
50
33
33
33
13
42
18
13
7. TROUBLE SHOOTING
7-1. BEFORE PERFORMING SERVICE
Be careful of electric shock when disconnecting parts while troubleshooting.
The voltage of each terminal is 110/120 V AC and DC when the unit is plugged in.
7-2. QC TEST MODE.
The washer must be empty and the controls must be in the off state.
1. Press the Extra Rinse and Warm Rinse buttons simultaneously.
2. Press the Power button, while the above condition. Then buzzer will sound twice.
3. Press the Start/Pause button repeatedly to cycle through the test modes.
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
Press the Extra Rinse and Warm Rinse button simultaneously.
So, for example a display indicating 241: a Water level frequency of 241 x.1 kHz
= 24.1 kHz
The digits indicate the water level frequency ( x.1 kHz ).
Check Point
Display Status
None
Turns on all lamps and locks the door.
1 time
Tumble clockwise.
rpm (40~50)
2 times
Low speed Spin.
rpm
3 times
High speed Spin.
rpm
4 times
Inlet valve for bleach turns on.
Water level frequency (25~65)
5 times
Inlet valve for hot water turns on.
Water level frequency (25~65)
6 times
Inlet valve for main wash turns on.
Water level frequency (25~65)
7 times
Tumble counterclockwise.
rpm (40~50)
8 times
Heater turns on for 3 sec.
Water temperature
9 times
Drain pump turns on.
Water level frequency (25~65)
10 times
Power off.
Turn off all lamps.
Number of times the
Start/Pause button is pressed
14
7-4. ERROR DISPLAY
If you press the Start/Pause button when an error is displayed, any error except
will disappear
and the machine will go into the pause status.
In case of
if the error is not resolved within 20 sec., or in the case of other errors,
if the error is not resolved within 4 min., power will be turned off automatically and the error code will
blink. In the case of
blink. In the case of
, power will not be turned off.
ERROR SYMPTOM
CAUSE
WATER INLET
ERROR
• Correct water level (246) is not reached within 8 minutes
after water is supplied or it does not reach the preset water
level within 25 minutes.
level within 25 minutes.
• The load is too small.
• The appliance is tilted.
• Laundry is gathered to one side.
• Non distributable items are put into the drum.
• The appliance is tilted.
• Laundry is gathered to one side.
• Non distributable items are put into the drum.
1
2
IMBALANCE
ERROR
• Not fully drained within 10 minutes.
3
DRAIN
ERROR
• Water is overflowing (water level frequency is over 213).
※ If is displayed, the drain pump will operate to
drain the water automatically.
4
OVER FLOW
ERROR
• The SENSOR SWITCH ASSEMBLY is out of order.
5
PRESSURE
SENSOR
ERROR
• Door not all the way closed.
• Loose electrical connections at Door switch and
• Loose electrical connections at Door switch and
PWB Assembly.
• The DOOR SWITCH ASSEMBLY is out of order.
6
DOOR OPEN
ERROR
• The THERMISTOR is out order.
7
HEATING
ERROR
ERROR
SYMPTOM CAUSE
8
9
• MAIN PWB ASSEMBLY is out of order
Replace the MAIN PWB ASSEMBLY
• Winding in the STATOR ASSEMBLY is short-circuited.
Replace the STATOR ASSEMBLY
• “ ” is dispplayed during a high spin
Replace the LEAD WIRE ASSEMBLY (MOTOR)
• The connector in the LEAD WIRE ASSEMBLY is not connected to
the connnector of STATOR ASSEMBLY
Reconnect or repair the connector
• The hall sensor is out of order/defective.
Replace the STATOR ASSEMBLY
CURRENT
ERROR
MOTOR
ERROR
15
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