Daikin R71FUV1 Service Manual page 289

Si20-701_B
Troubleshooting
Caution
Power
OFF
282
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is
the stop valve
open?
YES
Is
the lead
wire of the compressor
normal?
YES
Are
the wiring and
wiring connection to the
compressor
normal?
YES
The
insulation
resistance is low
(i.e., not more than
100 kΩ.)
NO
The
compressor coil
is shorted or
broken.
NO
CHECK 6
Is continuity of the
power transistor
normal?
NO
A
Troubleshooting by Remote Controller
NO
NO
NO
YES
YES
YES
Open the stop
valve
Replace the lead
wire of the
compressor.
Correct the
wiring and wiring
connection.
Replace the
inverter
compressor.
Replace the
inverter
compressor.
Replace the
outdoor unit PCB
(A3P).