F1695RDH - LG Washing Machine Service Manual (repair manual). Page 22

7-7. TROUBLESHOOTING WITH ERROR CODES

Reconnect or repair the Connector.
Or replace the Harness.

Is the Connector connected correctly to the Main PCB
and the Inlet Valve? Is the Harness right?

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 Water tap and  open it fully.

When there is water in the tub,
is the water level frequency
over 25.9kHz?

Are the inlet valve filters
clogged?

Check the Air Chamber and the Tube (clogged) 
Check the water level frequency again, 
if it is over 25.5kHz, replace the Pressure switch.

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.

 

 

 

Replace the Inlet Valve.

Replace the Main PCB.

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

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

Dry Valve

Pre Valve

Main Valve

Steam Valve (Option)

Clean nozzle Valve

3

3

1
2

5

4

1

2

5

4