LG LD1455WLFCS2 - Troubleshooting: Heater Error; Heater Error Diagnosis Flowchart

Is displayed?
Yes
Is the heater resistance
Measured properly?
(range is 28~33Ω)
Yes No
Replace the heater
Is the connector connected
to main PCB assembly
disconnected or
disassembled?
(X1 : stand-by relay,
X2 : Sump Heater relay,
RD6 : Thermistor )
No
Reconnect or
repair the
connector.
Yes
When door is closed, check
the resistor between
X1 4pin and X2 4pin.
Reconnect or
repair the
trans cable.
No
Yes
Heater Error
Condition.
The water is not heated or the temperature
in the inner tub is o
verheated to over 95℃
40