Daikin FTKE25BVM, Service Manual

Page: 187 / 298

Troubleshooting Si12-411A
176 Service Diagnosis
Troubleshooting
Check No.01
Refer to P.206
Check No.02
Refer to P.206
Replace fan motor.
Replace indoor
unit PCB (1) .
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) .
Turn off power supply
and rotate fan by hand.
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?
Turn off power supply and
disconnect fan motor
connector, then turn
power ON again.
Does it rotate?
Stop fan motor.
Is rotation
number command pulse
generated?
Is rotation
number command pulse
generated?
Check No.01
Check output of fan
motor connector
Check No.01
Check output of fan
motor connector
Check No.01
Check output of fan
motor connector
Check No.02
Check output of indoor
unit PCB (1)
Is motor control
power voltage DC 16V
generetad?
Is rotation
number command
voltage DC 5V
generated?
Does fan rotate
smoothly?
(R1214)
YES
YES
NO
YES
YES
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.