LG WD-14220FD Service Manual page 23

MAIN PWB ASSEMBLY
220-240V
1
2
MAIN PWB ASSEMBLY
HEATING WITHOUT WATER
When pressing Opt. 2 and Time Delay at the same
time after draining, is the water level frequency 252
or more? When pressing Opt. 2, Time Delay
buttons at the same time while wash, is the water
level frequency between
230 - 243 ?
YES
Checking voltage between two pins as press the
POWER button is the voltage 220 - 240V~?
DRAIN MALFUNCTIONING
Is the drain hose twisted or frozen?
NO
Is the impeller of the drain pump clogged?
NO
Is the connector disconnected, disassembled?
NO
Is the coil of the drain pump cut-off?
(resistance of coil is 90~160 )
NO
When checking voltage between connectors
( , ) on spinning, is the voltage 220 - 240V~
as the figure?
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NO
YES
YES
YES
YES
YES
NO
22
Replace the
S.PRESSURE SWITCH
ASSEMBLY
Replace the MAIN PWB
ASSEMBLY
Repair the DRAIN HOSE
ASSEMBLY.
Remove foreign material.
Reconnect or repair the
connector
Repair the DRAIN PUMP
ASSEMBLY.
Repair the MAIN PWB
ASSEMBLY.