WD-1406FD5 - LG Washing Machine Service Manual (repair manual). Page 23

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22
7-6. TROUBLESHOOTING WITH ERROR
Water Inlet Error (IE)
Is the water tap closed?
[Note] Environmental safety check list
1. No water tap leakage & freeze.
2. No entanglement of water supply hose.
3. No water shortage.
4. No water supply hose leakage.
5. No the inlet filter clogged.
Check the
Water tap
and  open it fully .
When there is water in the tub,
is the water level frequency
over 26.2KHz?
Replace the
Inlet Valve
.
Is the 
Connector
connected correctly to the 
Main
PCB
and the 
Inlet Valve
?
Or is the 
Harness
alright ?
Check the
Air Chamber
and
the Tube
(clogged)
And When you check the water level frequency again, 
if it is over 26.2KHz, youreplace
the Pressure switch.
YES
YES
NO
Replace the
Main PCB
.
NO
YES
YES
NO
NO
Is the each resistance of Inlet Valve within
3.5 ~4.5 k
Ω ?
When the washing machine is started, 
is operated the inlet valve? 
Pre. Valve
Main Valve
Dry Valve
1
3
2
1
3
2
Reconnect or repair 
the
Connector
.
Or replace the
Harness
.
NO
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