34 _ Troubleshooting
Information
Type
Infor-
mation
Code
Causes
Corrective Actions
Description of Photo
Water Supply
4C
4C2
• 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 Incorrect
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: 3.6 to 4.4 kΩ between two terminals
of each solenoid.
2. Check whether there is foreign material at the
inlet filter of water supply valve.
Drain
5C
• 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 182 to 222 Ω between
the Terminals for the Pump Motor
Communication
AC
• 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.
-
AC6
• The signals between the main
and Inverter PBAs are not
sensed.
• Incorrect wire Connections
between the main and inverter
PBAs.
• Check the wire connections and
terminal contacts between the
main and inverter PBAs.
• Check for disconnected wires.
• If the main or Inverter PBA’s
communication circuit is faulty,
replace it.
-
AC2
• The diagnosis of the I/O Board
communication error.
• 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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2018/2/1 17:15:50
