Daikin F-Series Service Manual page 109

Troubleshooting
Troubleshooting
Check No.01
Turn off power supply
Refer to P.130
and rotate fan by hand.
Turn power ON and
operate fan.
98
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
NO
Does fan rotate
smoothly?
YES
Turn off power supply and
NO disconnect fan motor
Does it rotate?
connector, then turn
power ON.
YES
Turn off power supply and
disconnect fan motor
connector, then turn
power ON again.
Stop fan motor.
Check No.01
Check output of fan
motor connector
Is rotation
NO
number command
pulse generated?
YES
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
Check No.01
Check output of fan
motor connector
Is
rotation
YES
number command
voltage DC 1~6V
generated?
NO
Check No.01
Check output of fan
motor connector
Is rotation
NO
number command
pulse generated?
YES
Si04-703A
Replace fan motor.
Replace indoor unit
PCB.
Replace indoor unit
PCB.
Replace fan motor.
Note : Motor may
break when
the motor
connector is
disconnected
while
remaining
power supply.
Replace fan motor
and indoor PCB.
Replace indoor unit
PCB.
Replace fan motor.
Replace indoor unit
PCB.
(R7133)
Service Diagnosis