WD-10391TD, WD-10391TDK, WD-10391TDP, WD-10721MDX - LG Washing Machine Service Manual (repair manual). Page 23

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22
NO
YES
YES
WASH HEATER TROUBLE
When checking the voltage between 
connector             the PWB assembly (Main)
during cotton 95°C 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   ?
(1)
(1)
4
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
3
  ~    
220 - 240V~
PWB ASSEMBLY (MAIN)
Replace the thermistor
(6322FR2046C)
Push the thermistor
tightly to the rubber.
When checking thermistor on the tub, 
Red
is the thermistor loosened above 2mm from 
the rubber?
HEATING CONTINUOUSLY ABOVE 
THE SETTING WATER TEMPERATURE
3
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