LG WD-1050FH Service Manual page 23

220-240V
Yellow
Red
1
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WASH HEATER TROUBLE
When checking the voltage between two
receptacles of the PWB assy(Power) during
washing.
Is the voltage 220-240V?
YES
After power off, is the resistance between yellow
wire and red wire of
connector 10 to 30Ω?
NO
After power off, is the resistance of heater
10 to 30Ω?
HEATING WATER CONTINUOUSLY ABOVE
THE SELECTED WATER TEMPERATURE
Is the resistance between two receptacles with
BL/WH wires parted from PWB assy
2.5kΩ to 180kΩ(105 ℃ ~0 ℃ )?
YES
When checking thermistor on the tub cover,
is the thermistor gotten more than 2 mm out of the
rubber?
NO
YES
NO
NO
YES
22
Replace the PWB assy
(Power)
Normal
Replace the heater assy
Replace the thermistor
(6322FR2046B)
Get the thermistor back
to the rubber.