LG WD-143605TD Service Manual page 23

PWB ASSEMBLY (MAIN)
220 - 240V~
RED
YELLOW
WASH HEATER TROUBLE
When checking the voltage between
connector the PWB assembly (Main)
during whites washing ,Is the voltage
~
220 - 240V ?
YES
After power off,is the resistance of wire
(RED-YELLOW) 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
YES
When checking thermistor on the tub,
is the thermistor loosened above 2mm from
the rubber?
YES
3
1 2
22
Replace the PWB
NO
assembly (Main)
Normal
Replace the heater
NO
assembly
Replace the thermistor
NO
(6322FR2046C)
Push the thermistor
YES
tightly to the rubber.