LG WD(M)-80230FB Service Manual page 23

PWB ASSEMBLY (MAIN)
220 - 240V~
BROWN
BLUE
(1)
WASH HEATER TROUBLE
When checking the voltage between
connector the PWB assembly (Main)during
cotton washing ,Is the voltage
~
220 - 240V ?
YES
After power off,is the resistance of wire
(BROWN-BLUE) connectors between
10 to 30 ?
NO
After power off and the heater terminal is
disconnected, is the resistance 10 to 30 ?
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
When disconnect the connector (1) on the
PWB assembly (Main) is the resistance of the
Natural connectors ( Violet),
(Orange) between 2.5k
(105 ~0 )?
YES
When checking thermistor on the tub,
is the thermistor loosened above 2mm from
the rubber?
NO
YES
3
1 2
NO
to 180k
2
3
23
Replace the PWB
assembly (Main)
Normal
Replace the heater
assembly
Replace the thermistor
NO
(6322FR2046F)
Push the thermistor
YES
tightly to the rubber.