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Fault Confirmation Criteria
• If the thermistor
is shorted and open
• If the water
temperature is 145℃
or higher
• If the motor is
restricted
• If freezing is detected
• If there is an internal
leak
Possible causes of faults
1. Thermistor fault
2. Heater driving circuit fault
1. If the connector for motor
connection is disconnected, or it
has a contact fault
2. If the harness motor between the
stator assembly and controller
is open
If the water supply hose, drainage
hose, or drainage pump is frozen
1. If the tub is damaged, or the
connection of different hoses has
a problem
2. If the safety switch device is
faulty
21
Action
• Replace the thermistor.
• Replace the controller.
• Reconnect the
connector and correct
the poor connection.
• Replace the harness
motor.
• Defreeze the water
supply hose with a towel
wet with warm water.
Defreeze the drainage
hose and drainage pump
by filling the tub with
warm water.
• Replace internal parts
or reconnect the hose.
• Adjust or replace the
safety switch.
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