Si10-417
Troubleshooting
Service Diagnosis
31
Replace indoor unit
PCB (1) .
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) .
Turn off power supply and
disconnect fan motor conn-
ector, 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 dis-
connect fan motor connector,
then turn power ON again.
Is rotation
number command pulse
generated?
Check No.01
Check output of fan motor
connector
Check No.01
Check output of fan motor
connector
Is rotation
number command voltage
DC 5V generated?
YES
YES
NO
YES
NO
NO
YES
NO
A
B
Replace indoor unit
PCB (1) .
Replace indoor unit
PCB (2) .
Check No.02
Check output of indoor unit
PCB (1)
Is motor control
power voltage DC 16V
generetad?
(R1214)
YES
NO
B
Si10-417.fm Page 31 Wednesday, September 22, 2004 6:38 PM
