Daikin FTXS09HVJU Service Manual page 115

SiUS04-904
Troubleshooting
Check No.01
Refer to P.144
104
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts damage may occur.
Turn off the power supply
and rotate the fan by hand.
NO
Does the fan
rotate smoothly?
YES
Turn the power ON and
operate the fan.
Turn off the power supply
NO
Does it rotate?
and disconnect the fan
motor connector, then
turn the power ON.
YES
Turn off the power supply
and disconnect the fan
motor connector, then
turn the power ON again.
Stop the fan motor.
Check No.01
Check the output of the
fan motor connector
Is the rotation
NO
number command pulse
generated?
YES
Check No.01
Check the output of the
fan motor connector
Is the motor
NO
power voltage DC 200V
generated?
YES
Is the motor
NO
control power voltage
DC 15V generated?
YES
Check No.01
Check the output of the
fan motor connector
Is the
rotation number
YES
command voltage DC 1~6V
generated?
NO
Check No.01
Check the output of the
fan motor connector
Is the
NO
rotation number
command pulse
generated?
YES
Troubleshooting
Replace the fan
motor.
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
unit PCB.
Replace the indoor
unit PCB.
Replace the fan
motor.
Replace the indoor
unit PCB.
(R10500)
Service Diagnosis