Daikin RQYQ140-180PY1 Service Manual page 168

Troubleshooting by Remote Controller
Troubleshooting
159
A
Turn ON the power supply,
and start operation.
Stop (standby)
before the fan rotates.
NO
Stop (standby)
when the compressor
starts up.
NO
U2
The
malfunction recurs.
NO
YES
YES
YES
SiBE341001
Replace the noise filter PCB
(A2P).
(Defect of noise filter)
Replace the inverter PCB (A3P).
If the inverter PCB is badly
damaged, recheck the
compressor.
Check the harness.
Continue the operation.
The malfunction may
temporarily result from
onsite causes.
Causes: Instantaneous
power failure (open phase),
noises, or else.
Troubleshooting