LG WD-8050F Service Manual page 53

PWB ASSY(POWER)
AC 220-240V
2 1
PWB ASSY(MAIN)
HEATING WITHOUT WATER
When pressing £ WASH£and £ RINSE£buttons at the
same time after dranining, is the water level frequency 52 or
more?
When pressing £ WASH£, £ RINSE£buttons at the
same time while wash, is the water level frequency
between 20~40?
YES
Replace the PWB assy
(POWER or MAIN)
D R A I N M A L F U N C T I O N I N G
Is the drain hose kinked or frozen?
Is the filter of drain pump clogged?
Is the connector disconnected or is the contact
bad?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160¥ )
When checking voltage between two receptacles
as shown (¥L , ¥M ) on spinning, is the voltage AC
220-240V ?
NO
NO
NO
NO
21
Replace the sensor
NO
(pressure)
YES Repair drain hose
YES
Remove foreign material.
Reconnect or repair the
YES
connector
Replace the pump assy
YES
Replace the PWB assy
NO
(Main)