Daikin R71FUV1 Service Manual page 331

Si20-701_B
Troubleshooting
Caution
Is the fan
motor connector
connected?
YES
Are
connectors
connecting the
control PCB and
inverter PCB
connected
securely?
YES
Is the
transmission
wiring between the
control PCB and
inverter PCB
disconnected?
NO
Disconnect the fan motor
connector, and turn ON
again.
E7
Is "
displayed on the
remote controller?
LC
(Is "
displayed?)
NO
A
324
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
NO
YES
"
YES
" not
Troubleshooting by Remote Controller
Connect the
connector, and
turn ON again.
Connect the
transmission
wiring, and turn
ON again.
Fix the
disconnection,
and turn ON
again.
Replace the fan
motor.
Inverter
transmission
defective due to
the error of fan
motor.