WM-1437LFD - LG Washing Machine Service Manual (repair manual). Page 23

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.

When pressing Rinse and Medic Rinse at the same
time after draining, is  the water level frequency 248 ~
262 or more?  
When pressing Rinse and Temp. buttons at the
same time while wash, is the water level
frequency between 230 - 243?

Checking voltage between two pins as press the
POWER button is the voltage  220-240V~?

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 cut-off?

(resistance of coil is 80~150

Ω)

When checking voltage between connectors

( ,  )on spinning, is the voltage 220-240V~ 

as the figure?