Heating Without Water; Drain Malfunction - LG WM2688H*M Service Manual

BL WH BL BK
YL
YL
RD
BK
RD
YL
BL
BL WH

WH
RD
B
B
WH B WH
WH BL BK
BL
YL
YL
RD
BK
RD
YL
BL
BL
WH 
WH
RD
B
B
WH B WH

HEATING WITHOUT WATER

When pressing WASH/RINSE and SOIL LEVEL at the
same time after draining, is the water level frequency
255?
When pressing WASH/RINSE and SOIL LEVEL
buttons at the same time while washing, is the water
level frequency between 230 - 243 ?
YES
Check the voltage between two pins while pressing
the POWER button. Is the voltage 120 V AC?

DRAIN MALFUNCTION

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 120 V AC as in the figure?
O
O
O
O
25
Replace the
O
SENSOR SWITCH
ASSEMBLY.
YES Replace the MAIN PWB
ASSEMBLY.
YES
Repair the DRAIN HOSE
ASSEMBLY.
YES
Remove foreign material.
Reconnect or repair the
YES
connector
Replace the DRAIN
YES
PUMP ASSEMBLY.
O
Replace the MAIN PWB
ASSEMBLY.