Daikin R71FUV1 Service Manual page 102

Troubleshooting by Remote Controller
Troubleshooting
Caution
Is the
power supply
for the indoor unit
fan correctly
connected?
YES
Is the
fan interlock
PCB correctly
connected?
YES
Restart operation
Is the
operation normal?
NO
Is
200V
supplied to the
connector of the fan
interlock
PCB?
NO
Is the
voltage of the
connector for the main
PCB DC5V?
NO
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
NO
YES
YES
YES
Si20-701_B
Connect
correctly.
Connect
correctly.
It is supposed
that the system
caused abnormal
stop due to
overload /
overcurrent / lock
of the indoor unit
fan motor.
Check the indoor
unit fan motor.
Replace the fan
interlock PCB.
Replace the
indoor unit PCB.
95