LG 40002 Service Manual ▷ View online
12
6. WIRING DIAGRAM
/
PROGRAM CHART
MAIN PWB
RD
VL
BL
/
WH
BL
/
WH
BL
/
WH
SBL
GN/YL
WASHING HEATER
DOOR LOCK S/W
DRAIN PUMP
U
V
W
RD
BN
YL
BL
BL
GN
/
YL
GN
/
YL
BL
BN
BL
BN
POWER
CORD
HS1
HS2
HS3
GND
MOTOR
PRESSURE
SENSOR
THERMISTOR
n
"n" PIN CONNECTOR
TERMINAL+HOUSING (#250)
EARTH RING TERMINAL
EARTH RING TERMINAL
Base/Line
MEZ31823201
TERMINAL (#250)
(S)
(S) (G)
OR
RD
BL
YL
BL
RD
GY
WH
BK
2 6 3 1
2 6 3 1
2 6 3 1
4 5
4 5
4 5
GY
/
WH
YL
/
RD
BN
/
YL
BK
BK
BK
BK
PTC
BK
BL
BL
/
RD
WH
/
BK
YL
1 2 3 4
1 2 3 4
1 2 3 4
BL
1 2 3 4
1 2 3 4
1 2 3 4
6 4 3 2 5 1
6 4 3
6 4 3
2 1 3
2 1 3
2 1 3
1 2 3
1
1
1
1
1
2 3
2
2
1
1 2
1 2
5 1
1 4 3 5 2
1 4 3 5 2
1 4 3 5 2
2 3 1
2 3 1
2 3 1
3 2 1
3 2
3 2
1 2
1 2
1 2
1
DISPLAY
PWB
PWB
RD
NA
BK
2
1
1 2
1 2
YL
WH
RED
INLET VALVE
BL
NA
H
O
O
T
WH
WH
NA
WH
NA
2 1
2 1
2 1
B
L
E
A
C
H
2 1
2 1
2 1
M
A
I
N
2 1
2 1
2 1
1 2 3
1 2 3
1 2 3
RD
NOISE
FILTER
FILTER
1 2 3
1 2 3
1 2 3
WH
*
*
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
104
71
23
23
17
24
8
120
120
57
56
52
31
33
33
Speed Wash
13
30
44
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 Stain Cycle and Soak 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 Quick Cycle and Spin Speed 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 counterclockwise
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 main water turns on.
Water level frequency (25~65)
6 times
Inlet valve for hot wash turns on.
Water level frequency (25~65)
7 times
Tumble clockwise
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.
• 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
7
8
HEATING
ERROR
MOTOR
ERROR
15
8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION
8. ERROR DIAGNOSIS AND CHECKLIST
SYMPTOM
GUIDE FOR SERVICE CALL
NO POWER
Water inlet trouble
YES
YES
YES
NO
NO
YES
NO
NO
Is the power plug connected firmly to
120V~ outlet?
Power failure? or Breaker opened?
Visit to check
Is " " displayed?
Is the tap opened?
Is the tap frozen?
Is the water supply shut-off?
Is filter in the inlet valve clogged with
foreign material?
Visit to check
Clean the filter of
inlet valve
inlet valve
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