LG WD-80187N Service Manual page 22

PWB ASSEMBLY (MAIN)
(RED) (WHITE) (RED) (WHITE) (WHITE) (BLUE) (WHITE) (BLUE)
220 - 240V~
RED
YELLOW
1
(RED) (WHITE) (RED) (WHITE) (WHITE) (BLUE) (WHITE) (BLUE)
6
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
When disconnect the connector (1) on the
PWB assembly (Main) is the resistance of the
Natural connectors ( Blue White),
(White) between 2.5k
(105 ~0 )?
YES
When checking thermistor on the tub,
is the thermistor loosened above 2mm from
the rubber?
NO
YES
1 2 3
NO
to 180k
1
6
YES
22
Replace the PWB
assembly (Main)
Normal
Replace the heater
assembly
Replace the thermistor
NO
(6322FR2046)
Push the thermistor
tightly to the rubber.