Heating Without Water - LG WD-1 Series Service Manual

PWB ASSEMBLY (MAIN)
AC 220-240V
PWB ASSEMBLY (MAIN)

HEATING WITHOUT WATER

Water level frequency 252 or more?
Water level frequency between 230~245~?
YES
Checking voltage between two [Yellow(RD),
Black(YL)]pins as press the power button is
the voltage 220 - 240V~ in without water
condition
DRAIN MALFUNCTIONING
Is the drain hose twisted or frozen?
Is the impeller of the drain pump clogged?
Is the connector disconnected,
disassembled?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160 )
When checking voltage between connectors
( , ) on spinning, is the voltage
220 - 240V~ as the figure?
NO
NO
NO
NO
29
Replace the sensor
NO
(pressure)
Replace the PWB
YES
assembly
Repair drain hose
YES
Remove foreign
YES
material.
Reconnect or repair the
YES
connector
Replace the pump
YES
assembly
Replace the PWB
NO
assembly (Main)