WM-128NW - LG Washing Machine Service Manual (repair manual). Page 23

7-6. TROUBLESHOOTING WITH ERROR

Is the water tap closed?

[Note] Environmental safety check list

1. No water tap leakage or freeze       4. No entanglement of water supply hose.

2. No water shortage.                          5. No water supply hose leakage

3. The inlet filter is not cloggeed. 

Check the 

and  open it fully.

When there is water in the tub,
is the water level frequency
over 26.0khz?

Are the inlet valve filters
clogged?

Reconnect or repair the 

.

Or replace the 

.

Replace the 

.

Is the 

connected correctly to the 

and the 

? is the 

alright ?

Check the 

and 

(clogged) 

Check the water level frequency again, 
if it is over 26.2KHz, replace 

Replace the 

.

There are  filters on the unit’s inlet valves to filter mineral
deposits or other debris from entering the unit.
If it is clogged, water will not flow through these filters. Remove
hoses from unit, remove the filters and clean thoroughly.

 

 

 

Is the resistance of each lnlet valve within 3.5 ~4.5 kΩ ?

When the washing machine is started, is the inlet valve
operating?

Pre Valve

Steam Valve

Main Valve

1

2

1

2

3

3