Daikin Super Multi Plus E-Series - Page 339

SiEN18-622 Troubleshooting for RA Indoor Unit
Troubleshooting 327
Troubleshooting
Check No.01
Refer to P.330
Check No.02
Refer to P.330
Replace fan motor.
Replace indoor
unit PCB (1).
Replace indoor
unit PCB (2).
Replace fan motor.
Note: Motor may
break when
the motor
connector is
disconnected
while
remaining
power supply.
Replace fan motor
and indoor PCB (2).
Replace indoor
unit PCB (2).
Replace fan motor.
Replace indoor
unit PCB (2).
Does it rotate?
(R1214)
YES
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
NO
YES
YES
Turn off power supply
and rotate fan by hand.
Does fan rotate
smoothly?
Turn power ON and
operate fan.
Turn off power supply and
disconnect fan motor
connector, then turn
power ON.
Check No.01
Check output of fan
motor connector
Is motor
power voltage
DC 200V
generated?
Is motor
control power
voltage DC 15V
generated?
Check No.02
Check output of indoor
unit PCB (1)
Turn off power supply and
disconnect fan motor
connector, then turn
power ON again.
Is motor control
power voltage DC 16V
generated?
Check No.01
Check output of fan
motor connector
Is rotation
number command
voltage DC 5V
generated?
Stop fan motor.
Check No.01
Check output of fan
motor connector
Is rotation
number command pulse
generated?
Is rotation
number command pulse
generated?
Check No.01
Check output of fan
motor connector
Replace indoor
unit PCB (1).
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.