LG WM2477HS Service Manual ▷ View online
28
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
SB
SB
BL
YL
BL
BL
YL
WH
WH
WH
WH
WH
SB
RD
RD
BL
RD
YL
BK
BK
WH
SB
SB
SB
BL
YL
BL
BL
YL
WH
WH
WH
WH
WH
SB
RD
RD
BL
RD
YL
BK
BK
WH
SB
Replace the
SENSOR SWITCH
ASSEMBLY.
SENSOR SWITCH
ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
Repair the DRAIN HOSE
ASSEMBLY.
ASSEMBLY.
Remove foreign material.
Reconnect or repair the
connector
connector
Replace the DRAIN
PUMP ASSEMBLY.
PUMP ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
When pressing SPIN SPEED and SOIL LEVEL at the
same time after draining, is the water level frequency
255?
When pressing SPIN SPEED and SOIL LEVEL buttons
at the same time while washing, is the water level
frequency between 230 - 243 ?
same time after draining, is the water level frequency
255?
When pressing SPIN SPEED and SOIL LEVEL buttons
at the same time while washing, is the water level
frequency between 230 - 243 ?
Check the voltage between two pins while pressing
the POWER button. Is the voltage 120 V AC?
the POWER button. Is the voltage 120 V AC?
Is the drain hose twisted or frozen?
Is the impeller of the drain pump clogged?
Is the connector disconnected, disassembled?
Is the coil of the drain pump too high or low?
(resistance of the coil is 10-20
(resistance of the coil is 10-20
Ω)
When checking voltage between connectors during
spin, is the voltage 120 V AC as in the figure?
HEATING WITHOUT WATER
DRAIN MALFUNCTION
29
Extra Hot: 70 °C
25
(1)
SB
SB
BL
YL
BL
BL
YL
WH
WH
WH
WH
WH
SB
RD
RD
BL
RD
YL
BK
BK
WH
SB
SB
SB
BL
YL
BL
BL
YL
WH
WH
WH
WH
WH
SB
RD
RD
BL
RD
YL
BK
BK
WH
SB
Push the THERMISTOR
tightly to the rubber.
tightly to the rubber.
When checking the THERMISTOR on the tub,
is the THERMISTOR loose?
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
WASH HEATER TROUBLE
30
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Hose
Connector
(White)
Connector
Connector
Hose
SB
SB
BL
YL
BL
BL
YL
WH
WH
WH
WH
WH
SB
RD
RD
BL
RD
YL
BK
BK
WH
SB
WILL NOT CIRCULATE WATER
Is the impeller of the drain pump clogged?
Are the Hose Connector and/or Hose clogged?
Is the connector disconnected, disassembled?
Is the coil of the right side of drain pump open
or short circuited? (Coil R is 18-30
or short circuited? (Coil R is 18-30
Ω)
When checking voltage between the
connectors during spin, is the voltage 120 V AC,
as the figure?
connectors during spin, is the voltage 120 V AC,
as the figure?
Remove foreign material.
Remove foreign material.
Reconnect or repair
the connector.
the connector.
Replace PUMP MOTOR
ASSEMBLY.
ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
31
(1)
(2)
SB
SB
BL
YL
BL
BL
YL
WH
WH
WH
WH
WH
SB
RD
RD
BL
RD
YL
BK
BK
WH
SB
SB
SB
BL
YL
BL
BL
YL
WH
WH
WH
WH
WH
SB
RD
RD
BL
RD
YL
BK
BK
WH
SB
SPIN TROUBLE
Check the SENSOR SWITCH
ASSEMBLY or HOSE (Pressure).
If the problem is on the SENSOR
SWITCH ASSEMBLY or the
HOSE, replace the SENSOR
SWITCH ASSEMBLY or the
HOSE.
ASSEMBLY or HOSE (Pressure).
If the problem is on the SENSOR
SWITCH ASSEMBLY or the
HOSE, replace the SENSOR
SWITCH ASSEMBLY or the
HOSE.
Normal
Correct the connection.
Replace the STATOR
ASSEMBLY
ASSEMBLY
Check during spin if the frequency of the water
level is 248 or more.
level is 248 or more.
Press the START/PAUSE button 2 times in QC
Test mode, is the drum spinning at low speed?
Test mode, is the drum spinning at low speed?
Is it disconnected, or disassembled?
[Red: 3pin (1), NA: 4pin (2)]
[Red: 3pin (1), NA: 4pin (2)]
Check the motor connector, Is the resistance of
the terminal the same as the figure?
MOTOR TERMINAL
the terminal the same as the figure?
MOTOR TERMINAL
Resistance of terminal:
- / - / - : About 5
Ω-15 Ω
Replace the MAIN PWB ASSEMBLY
Does the spring of Latch Hook actuate?
Is there clicking sound once or twice when the
START/ PAUSE button is pressed to start the cycle?
START/ PAUSE button is pressed to start the cycle?
Is DOOR SWITCH ASSEMBLY broken?
Replace Door Assembly.
Check the DOOR SWITCH
ASSEMBLY Connector and
MAIN PWB ASSEMBLY
(Red 3 pin, Yellow 4 pin and
white 3 pin connector (1)).
ASSEMBLY Connector and
MAIN PWB ASSEMBLY
(Red 3 pin, Yellow 4 pin and
white 3 pin connector (1)).
Replace the DOOR
SWITCH ASSEMBLY.
SWITCH ASSEMBLY.
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