LG WM2601HW Service Manual ▷ View online
24
ERROR
SYMPTOM
CAUSE
LOCKED MOTOR
ERROR
EEPROM ERROR
• The connector (3-pin, male, white) in the MOTOR
HARNESS is not connected to the connector (3-pin,
female, white) of STATOR ASSEMBLY.
• The electric contact between the connectors (3-pin,
male, white) in the MOTOR HARNESS and 4-pin,
female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.
• The MOTOR HARNESS between the STATOR
ASSEMBLY and MAIN PWB ASSEMBLY is cut
(open circuited).
• The hall sensor is out of order/defective.
8
• EEPROM is out of order.
Displayed only when the START/PAUSE button is
first pressed in the Load Test Mode.
9
POWER FAILURE
• After the power supply is stopped while washing
machine is working, the power is supplied rapidly.
10
25
Remarks
Result
(tolerance
5%)
At 86
℉
(30
℃
)
At 104
℉
(40
℃
)
At 140
℉
(60
℃
)
At 158
℉
(70
℃
)
At 203
℉
(95
℃
)
At 221
℉
(105
℃
)
39.5 k
Ω
26.1 k
Ω
12.1 k
Ω
8.5 k
Ω
3.8 k
Ω
2.8 k
Ω
Remarks
Result
(tolerance
5%)
At 86
℉
(30
℃
)
At 104
℉
(40
℃
)
At 140
℉
(60
℃
)
At 158
℉
(70
℃
)
At 203
℉
(95
℃
)
At 221
℉
(105
℃
)
At 241
℉
(1
16
℃
)
At 266
℉
(130
℃
)
At 293
℉
(145
℃
)
At 320
℉
(160
℃
)
At 356
℉
(180
℃
)
39.5 k
Ω
26.1 k
Ω
12.1 k
Ω
8.5 k
Ω
3.8 k
Ω
2.8 k
Ω
2.1 k
Ω
1.4 k
Ω
1.0 k
Ω
0.7 k
Ω
0.4 k
Ω
Lamp
Pin1: 16.5 V
Thermistor
Pin4: wash thermistor
Pin6: wash heater
Motor
RD.
pin1: U
pin2: V
pin3: W
NA.
pin1: +
pin2: Hb
pin3: Ha
pin4: GND
Door Switch
NA. pin1: PTC
pin2: PTC
Inlet V
alve
NA4.
pin3: main wash
BL.
pin1: common
pin2: AG
valve
NA5.
pin2: pre valve
pin3: bleach
pin4: hot valve
Result
T
est Points
5-15
Ω
5-15
Ω
5-15
Ω
(1) to (2)
(2) to (3)
(3) to (1)
Result
T
est Points
8-12 k
Ω
8-12 k
Ω
10-15 Vdc
10 Vdc
10 Vdc
Remarks
V
oltage Input
Pulsing Signal
Pulsing Signal
(1) to (2)
(1) to (3)
(1) to (4)
(2) to (4)
(3) to (4)
Result
T
est Points
700-1500
Ω
60-90
Ω
Infinity
120 V
ac
Remarks
At 77
℉
(25
℃
)
At 77
℉
(25
℉
)
V
oltage Input
(2) to (4)
(3) to (4)
(4) to (5)
(2) to (4)
Pump
Drain pump: 10-20
Ω
Circulation pump: 18-30
Ω
Result
T
est Points
0
Ω
0
Ω
WH (1) to RD (3)
WH (3) to RD (1)
Heater:
12 -18
Pin1 to Pin2:
0 -1.2 k
Heater
BL, BK. pin4: V
ac (input)
BL.
pin3: steam generator
heater (input)
BK.
pin3: wash heater (input)
pin3: steam generator/
YL.
wash heater (output)
pin4: V
ac (output)
Ω
Ω
Ω
Ω
AG Sensor
YL.
pin1: GND
pin2: S
pin4: L
Display
pin3: GND
pin4: 12V
pin5: 5V
Pump
BL. pin3: circulation pump
NA. pin1: drain pump
BL. pin3 to NA. pin1
1. Pump running: 120V
5%
2. Stopped Motion Pump: 0-1V
8-3. TROUBLESHOOTING SUMMARY
26
INLET VALVE ERROR
Is displayed?
When you press both
WASH/RINSE button and
DELAY WASH button
simultaneously,
is the water level frequency
below 24.6 kHz?
WASH/RINSE button and
DELAY WASH button
simultaneously,
is the water level frequency
below 24.6 kHz?
Is filter inlet valve clogged
with foreign material?
with foreign material?
Is the connector connected to
inlet valve assembly
disconnected or
disassembled?
inlet valve assembly
disconnected or
disassembled?
Is resistance between
each terminal of INLET
VALVE ASSEMBLY
0.8-1.2 k
each terminal of INLET
VALVE ASSEMBLY
0.8-1.2 k
Ω?
(Refer to 9-5 inlet valve
assembly.)
assembly.)
Clean or
replace the filter.
replace the filter.
Check the AIR
CHAMBER
and the tube
(clogged).
CHAMBER
and the tube
(clogged).
Yes
No
No
Yes
Yes
Reconnect or
repair
the connector.
repair
the connector.
Replace the
INLET VALVE
ASSEMBLY.
INLET VALVE
ASSEMBLY.
Yes
Yes
Is the voltage of the inlet
valve connector 120 V AC?
(Check the all terminal of
valve connector 120 V AC?
(Check the all terminal of
INLET VALVE ASSEMBLY
while the power is on.)
while the power is on.)
Replace the
INLET VALVE
ASSEMBLY.
INLET VALVE
ASSEMBLY.
No
Yes
Is the connector connected to
MAIN PWB assembly
disconnected or dis-
assembled?(NA2, NA4, BL3)
MAIN PWB assembly
disconnected or dis-
assembled?(NA2, NA4, BL3)
Reconnect or
repair
the connector.
repair
the connector.
No
Yes
Yes
Is Electrical connection
correct?
correct?
(Refer to 9-5 wiring diagram)
Replace the
MAIN HARNESS.
MAIN HARNESS.
No
No
After checking connector,
is the water level frequency
below 24.6 kHz?
is the water level frequency
below 24.6 kHz?
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
[Note] Environmental safety check list
1) No water tap leakage
2) No water tap freeze
3) No entanglement of water supply hose
4) No water shortage
5) No shrinkage on water supply hose due to
1) No water tap leakage
2) No water tap freeze
3) No entanglement of water supply hose
4) No water shortage
5) No shrinkage on water supply hose due to
a possible misuse of hot and cold water
6) No water supply hose leakage
Check the
PRESSURE
SWITCH.
PRESSURE
SWITCH.
Yes
No
No
8-4. TROUBLESHOOTING WITH ERROR
27
DRAIN ERROR
Is displayed?
Is the connector connected
to pump motor assembly
disconnected or
disassembled?
to pump motor assembly
disconnected or
disassembled?
Reconnect or
repair
the connector.
repair
the connector.
Yes
Circulation pump
Yes
Drain pump
Connection connector
No
Yes
When you press both
WASH/RINSE button and
DELAY WASH button
simultaneously, is the
water level frequency
below 25.0 kHz?
WASH/RINSE button and
DELAY WASH button
simultaneously, is the
water level frequency
below 25.0 kHz?
Check the AIR
CHAMBER,
the tube
(clogged),
and press
switch.
CHAMBER,
the tube
(clogged),
and press
switch.
Is the coil of the drain
pump too high or low?
(resistance of the coil
is 10-20
pump too high or low?
(resistance of the coil
is 10-20
Ω)
(Refer to 9-4 Pump motor
assembly.)
assembly.)
Replace the
DRAIN PUMP
ASSEMBLY.
DRAIN PUMP
ASSEMBLY.
No
Yes
Is the voltage between
connectors out of range?
(NA2 pin1~ BL3 pin1)
- After remove Terminal
Position Assurance (TPA)
of connector, check as follows.
connectors out of range?
(NA2 pin1~ BL3 pin1)
- After remove Terminal
Position Assurance (TPA)
of connector, check as follows.
- Pump running : 120V±5%
- Stopped Motor/Pump : 0~1V
- Stopped Motor/Pump : 0~1V
Method
1. Press the Power button, while the SPIN SPEED
1. Press the Power button, while the SPIN SPEED
button and SOIL LEVEL button is pressed
simultaneously.
simultaneously.
2. Press Start/Pause button.
: 1 time
Pump slow-speed running
: 2 times
Pump mid-speed running
: 3 times
Pump high-speed running
: 4 times
Stop the Motor/Pump
[Note] Environmental check list
1) The drainage hose must not stay in a lower
1) The drainage hose must not stay in a lower
position.
2) The drainage hose must not be bent or
clogged in any way due to the surrounding
physical configuration.
physical configuration.
3) The drainage hose must not get frozen at all
times.
4) The drainage pump must not have any improper
substance or material inside that may cause
a machine breakdown.
a machine breakdown.
Replace the
MAIN PWB
ASSEMBLY.
MAIN PWB
ASSEMBLY.
Yes
No
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