LG FH4A8JDHK2N Series Service Manual page 32

Overflow Error (FE)
Power off for 10sec. Then power on.
Is the water level over reference line and is the water level frequency under 21.3kHz?
NO
Is water continuously
coming into the drawer?
YES
Replace the Inlet Valve assembly.
NO
Replace the Main PCB.
* Water level frequency
- Touch and Hold 'Rinse + ' & 'Temp.'
simultaneously.
Drain out the water and then
check the Air Chamber and the Tube (clogged).
If FE is displayed again,
then replace the Pressure Switch.
If FE is displayed again,
then replace the Main PCB.
32
YES