WD-MD350WM - LG Washing Machine Service Manual (repair manual). Page 20

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7-­5.  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.
.
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3
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  25.5KHz ?
Reconnect  or  repair  the  
Connector
.
Or  replace the  
Harness
.
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  25.5KHz,  you replace  
the  Pressure  switch.
YES
YES
NO
NO
Replace  the  
Main  PCB
.
NO
YES
YES
NO
NO
Is  the  each  resistance  of  Inlet  Valve  within
3.5  ~4.5  kŸ ?
When  the  washing  machine  is  started,  
is  operated  the  inlet  valve?  
Pre.  Valve
Main  Valve
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