Samsung WW90M6 Service Manual page 36

Infor-
Information
mation
Type
Code
4C
Water Supply
4C2
Drain 5C
AC
Communication AC6
AC2
34 _ Troubleshooting
WW22N6850NX-A2_SM.indb 34
Causes
• If the water supply valve has a
• Water supply value fault
• Check whether the water supply
• Main PCB fault
• Freezing in the winter season
Check the water supply valve
• Check whether no water is
whether only cold model or
hot and cold model Incorrect
connection can occur an error
• If the PBA relay operates
• Check whether the revolutions
• Check the same thing for the
• Check whether the connections
• Drain pump fault
• Freezing in the winter season
• Foreign materials in the drain
• If the drain pump operates
pump
• Main PCB fault
• If the motor revolutions are
• Check the wire connections and
• The signals between the
sub and main PBAs are not
• Check for disconnected wires.
sensed.
• Check whether the sub PBA
• Incorrect wire Connections
between the Sub and Main
PBAs.
• If the main PBA's communication
• Check the wire connections and
• The signals between the main
and Inverter PBAs are not
sensed.
• Check for disconnected wires.
• Incorrect wire Connections
• If the main or Inverter PBA's
between the main and inverter
PBAs.
• Check the wire connections and
• Check for disconnected wires.
• The diagnosis of the I/O Board
• Check whether the sub PBA
communication error.
• If the main PBA's communication
Corrective Actions
1. Check the resistance for the water supply valve.
wire disconnected, replace it.
valve is clogged with foreign
material and whether water is
supplied continually.
2. Check whether there is foreign material at the
supplied because of freezing in
the winter season.
abnormally, replace the PBA.
of the drain pump motor are
restrained by foreign material.
► DRAIN PUMP
natural drain process.
are correct and if there is any
wires disconnected.
abnormally intermittently when the
temperature of the water in the tub
is high.
restrained due to freezing in the
winter season, check the method
to remove the freezing and
remove as directed.
terminal contacts between the sub
and main PBAs.
is short-circuited because of
moisture.
circuit is faulty, replace it.
terminal contacts between the
main and inverter PBAs.
communication circuit is faulty,
replace it.
terminal contacts between the sub
and main PBAs.
is short-circuited because of
moisture.
circuit is faulty, replace it.
Description of Photo
Resistance: 3.6 to 4.4 kΩ between two terminals
of each solenoid.
inlet filter of water supply valve.
Resistance: Approximately 182 to 222 Ω between
the Terminals for the Pump Motor
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2018/2/1 17:15:50