Daikin FTXG25CVMAW Service Manual page 87

Troubleshooting
Troubleshooting
Check No.01
Refer to P.104
Turn power ON and
operate fan.
78
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Turn off power supply
and rotate fan by hand.
NO
Does fan rotate
smoothly?
YES
NO
Does it rotate?
YES
Stop fan motor.
Check No.01
Check output of fan
motor connector
Is rotation
NO
number command pulse
generated?
YES
Turn off power supply
and disconnect fan motor
connector, then turn
power ON.
Check No.01
Check output of fan
motor connector
Is motor
NO
power voltage
DC 200V
generated?
YES
Is motor
NO
control power voltage
DC 15V
generated?
YES
Is rotation
YES
number command
voltage DC 1~6V
generated?
NO
Si04-402A
Replace fan motor.
Note : Motor may
break when
the motor
connector is
disconnected
while
remaining
power supply.
Replace indoor
unit PCB.
Replace indoor
unit PCB.
Replace fan motor.
Replace indoor
unit PCB.
Replace indoor
unit PCB.
(R3310)
Service Diagnosis