LG WD-9016(0~9)S(U)P Service Manual page 25

When checking the voltage between two
receptacles of the PWB assembly during
washing.
Is the voltage AC 220-240V?
AC 220-240V
After power off, is the resistance between yellow
wire and red wire of
connector 10 to 30 ?
After power off, is the resistance of heater
10 to 30 ?
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
(1)
When disconnect the connector (1) on the
PWB assembly is the resistance of the
Natural connectors
(Blue / White) between 2.5k
(105 ~0 )?
When checking thermistor on the tub,
is the thermistor loosened above 2mm from
the rubber?
WASH HEATER TROUBLE
YES
NO
( White),
to 180k
YES
23
Replace the PWB
NO
assembly.
Normal.
YES
Replace the heater
NO
assembly.
Replace the thermistor
NO
4
1
Push the thermistor
YES
tightly to the rubber.