Troubleshooting _ 33
Error Type Error Mode Causes Corrective Actions Description of Photo
Water Supply
Error
4E
4E1
4E2
• Water supply value fault
• Main PCB fault
• Freezing in the winter season
• Check the water supply valve
whether only cold model or hot
and cold model Incorrected
connection can occur an error
• If the water supply valve has a wire
disconnected, replace it.
• Check whether the water supply valve is
clogged with foreign material and whether
water is supplied continually.
• Check whether no water is supplied because
of freezing in the winter season.
• If the PBA relay operates abnormally, replace
the PBA.
1. Check the resistance for the
water supply valve.
- Resistance: 4.0 to 5.0 k
between the terminals of the
water supply valve.
2. Check whether there is
foreign material in the water
supply valve diaphragm.
Drain Error 5E
• Drain pump fault
• Freezing in the winter season
• Foreign materials in the drain
pump
• Main PCB fault
• Check whether the revolutions of the drain
pump motor are restrained by foreign material.
• Check the same thing for the natural drain
process.
• Check whether the connections are correct
and if there is any wires disconnected.
• If the drain pump operates abnormally
intermittently when the temperature of the
water in the tub is high.
• If the motor revolutions are restrained due
to freezing in the winter season, check the
method to remove the freezing and remove as
directed.
DRAIN PUMP
Resistance: Approximately
155 to 175 between the
Terminals for the Water
Supply Valve
Communication
Error
AE
• The signals between the sub and
main PBAs are not sensed.
• Incorrect wire connections
between the sub and main PBAs.
• Check the wire connections and terminal
contacts between the sub and main PBAs.
• Check for disconnected wires.
• Check whether the sub PBA is short-circuited
because of moisture.
• If the main PBA’s communication circuit is
faulty, replace it.
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