DOWNLOAD LG WM2020CW Service Manual ↓ Size: 11.57 MB | Pages: 52 in PDF or view online for FREE

8-4. TROUBLESHOOTING ELSE

1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First of all, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly.

Check the
fuse or reset
the circuit
breaker

Is the current rating of
multi-outlet power strip
enough?
(Avoid connecting several
electric devices.)

Is the supplied voltage
120V AC?(+10%, -15%)

Alternate with
explanation

Is the connector connected
to PCB/Noise filter
disconnected or
disassembled?

Reconnect
or repair
the connector

Replace the
MAIN PWB
ASSEMBLY

Is LED on while the power
is on?

Replace the
DISPLAY
PWB
ASSEMBLY

Is three pin wire of
display PWB broken?

Main LED

Is the connector connected
to Main PWB / Display
PWB disconnected or
disassembled?

Reconnect or
Repair
the connector

Is the display PCB broken?
(check the buzzer sound
and LED light while push
the button.)

Replace the
DISPLAY
PWB
ASSEMBLY

Is the button of panel stuck?

Repair the
button

Remove the transit bolts
and Base packing.

Move the washer or
reinforce the floor.

Have all the transit bolts and base packing
been removed?

Is the washer installed on a solidly constructed
floor?

Check if the washer is perfectly level as follows:

Check the leveling of the washer with a level
and check that the washer is stable.

Put an unbalance part (rubber) inside of drum
and start QC test mode and run in high spin
(Refer to section 7-2). 
When the machine is spinning in high speed,
verify that it is stable.

If you do not have the unbalance part, put 4.5
to 6.5 lbs (2 to 3 kg) of clothing. Once loaded,
press power, Rinse+Spin and the start/pause
button in sequence.
When the machine is spinning in high speed,
verify that it is stable. 

If it is not stable, adjust feet accordingly. After
the washer is level, tighten the lock nuts up
against of the base of the washer. All lock nuts
must be tightened.

Adjustable feet

Adjustable feet

Lock nut

Refer to 
NO WATER SUPPLY

Check the wiring.

Clean the dispenser.

Put the detergent in the
correct place. 

Is water supplied?

Is the detergent caked or hardened?

Are receptacles correctly connected to the
terminals of the INLET VALVE ASSEMBLY?

Has detergent been put in the correct
compartment of the dispenser?

;7.<-6-:

5)@