Daikin R71FUV1 Service Manual page 271

Si20-701_B
Troubleshooting
Caution
Turn OFF the power
supply once and then turn
it ON again.
Does it
return normally?
CHECK 16
Is the power transistor
normal?
CHECK 16
Is the power transistor
for the fan driver
normal?
CHECK 16
264
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
NO
NO
YES
the insulation
resistance of the
compressor is more
than 100kΩ.
NO
YES
Refer to P.488.
Troubleshooting by Remote Controller
Check if
YES
External factors
(Noise, etc.)
NO
Replace the
compressor and
the inverter PCB
for the
compressor at
the same time.
Replace the
inverter PCB.
Replace the
inverter PCB for
the compressor
and the fan
inverter PCB.
Replace the
inverter PCB.