Daikin R71FUV1 Service Manual page 315

Si20-701_B
A
CHECK 4
Continuity check
in the power transistor
(IGBT). Is the
continuity
normal?
YES
Is the
inverter
output voltage
generated
approximately at the
same increasing speed
on each phase after
turning ON
again? (∗1)
(U-V, V-
W, W-
U)
YES
Note:
∗1. When operating compressor with compressor output
line disconnected, the compressor stops due to error
after elapsed time of 5 seconds. Therefore, check the
voltage increase for 5 seconds.
CHECK 4
308
Troubleshooting by Remote Controller
NO
NO
Refer to P.464.
Replace the
outdoor unit
PCB.
Replace the
outdoor unit
PCB.
Compressor
inspection.
Inspect
according to the
diagnosis
procedure for
abnormal noises,
vibration,
operating status,
etc. of the
compressor.