Daikin R71FUV1 Service Manual page 295

Si20-701_B
Disconnect the cable from
the compressor, and then
check the compressor for
the insulation resistance.
Power
OFF
Check the compressor
motor coil for any broken
wire.
Check the power
transistor on the inverter
PCB using a multiple
tester.
CHECK 16
Make wire connections
according to the Wiring
Diagram.
CHECK 16
288
A
The
insulation
resistance is low (i.e.,
not more than
100kΩ.)
NO
Some phase
has a broken wire.
NO
The
power
transistor has an
abnormality.
NO
B
Refer to P.488.
Troubleshooting by Remote Controller
YES
YES
YES
Replace the
compressor.
Replace the
inverter PCB
(A3P).