WD-12EFD, WD-12EFP - LG Washing Machine Service Manual (repair manual). Page 27

NO

YES

YES

YES

YES

NO

NO

NO

NO

YES

YES

NO

110V a.c

110V a.c

Replace the
SENSOR SWITCH
ASSEMBLY.

Replace the MAIN PWB
ASSEMBLY.

Repair the DRAIN HOSE 
ASSEMBLY.

Remove foreign material.

Reconnect or repair the
connector

Replace the DRAIN
PUMP ASSEMBLY.

Replace the MAIN PWB 
ASSEMBLY.

When pressing Spin and Dry at the same time after
draining, is  the water level frequency 255?  
When pressing Spin and Dry buttons at the same time
while washing, is the water level frequency between
230 - 243 ?

Check the voltage between two pins while pressing
the POWER button. Is the voltage  110V a.c?

Is the drain hose twisted or frozen?

Is the impeller of the drain pump clogged?

Is the connector disconnected, disassembled?

Is the coil of the drain pump too high or low?
(resistance of the coil is 10-20 

Ω)

When checking voltage between connectors during

spin, is the voltage 110V a.c as in the figure?