Daikin R71FUV1 Service Manual page 187

Si20-701_B
Disconnect the cable
from the compressor, and
then check the
compressor for the
insulation resistance.
Check the compressor
motor coil for any broken
wire.
Power ON
180
A
The
insulation
resistance is low
(i.e., not more than
100kΩ.)
NO
Some
phase has a broken
wire.
NO
Restart the
compressor, and
then check whether
or not the error
recurs.
YES
Has the
compressor
started up at high
differential pressure
(not less than
0.5MPa)?
NO
Troubleshooting by Remote Controller
YES
YES
NO
YES
Replace the
compressor.
End of work
Faulty pressure
equalization or
else may have
occurred.
Check the
refrigerant
system.
Defective
pressure
equalization:
Check the
refrigerant
system.
Replace the
compressor.
• Conduct checks
and diagnosis
of the
compressor.