WD-11120FB - LG Washing Machine Service Manual (repair manual). Page 24

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23
When checking the voltage between 
connector the PWB assembly (Main)
during whites washing ,Is the voltage 
220 - 240V    ?
Replace the PWB 
assembly (Main).
 
YES
NO
After power off and the heater terminal is
disconnected, is the resistance 10 to 30   ?
Replace the heater 
assembly.
NO
After power off,is the resistance of wire
(RED-YELLOW) connectors between
10    to 30   ?
Normal.
NO
YES
RED
YELLOW
1
2
4
3
  ~    
220 - 240V~
PWB ASSEMBLY (MAIN)
WASH HEATER TROUBLE
NO
YES
YES
1
2
4
3
(1)
Replace the thermistor
(6322FR2046B)
Push the thermistor
tightly to the rubber.
When disconnect the connector (1) on the 
PWB assembly (Main) is the resistance of the 
Natural connectors 
~ ② ( Blue/White, Violet),
③ (Blue, White) ₩between  2.5kΩ to 180kΩ
(105
~0
)?
When checking thermistor on the tub cover, 
is the thermistor loosened above 2mm from 
the rubber?
HEATING CONTINUOUSLY ABOVE 
THE SETTING WATER TEMPERATURE
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