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SiBE12-908
Troubleshooting
Service Diagnosis
124
Troubleshooting
Check No.01
Refer to P.168
(R9465)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Does the
fan rotate
smoothly?
Turn off the power supply
and rotate the fan by
hand.
NO
Replace fan motor.
YES
Check the output of the
fan motor connector.
Check No.01
NO
YES
Turn the power ON and
operate the fan.
Does it rotate?
Turn off the power supply
and disconnect the fan
motor connector, then
turn the power ON.
Is the motor
power voltage
DC 200V
generated?
YES
NO
Is the motor
control power
voltage DC 15V
generated?
Turn off the power supply
and disconnect the fan
motor connector, then
turn the power ON again.
Check the output of the
fan motor connector.
Check No.01
Is the rotation
number command
voltage DC 1~6V
generated?
Check the output of the
fan motor connector.
Check No.01
Is the rotation
number
command pulse
generated?
Stop the fan motor.
Check the output of the
fan motor connector.
Check No.01
Is the rotation
number command
pulse generated?
NO
YES
YES
NO
NO
YES
YES
NO
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
Replace the fan
motor.
Note : The motor
may break
when the
motor
connector is
disconnected
while
remaining
power supply.
Replace the fan
motor and the indoor
PCB.
Replace the indoor
unit PCB.
Replace the fan
motor.
Replace the indoor
unit PCB.