Daikin VRV III RXYQ5-54PY1 Service Manual page 281

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Power ON
270
A
Is the micro controller
NO
normal monitor (green) of
the A1P blinking?
YES
Check 10 or more seconds after
the power supply is turned ON.
YES
The A3P, A4P, and
A8P do not blink.
NO
YES
The A4P or A8P
does not blink.
NO
YES
The LC malfunction recurs.
NO
Si34-601A
This is not LC.
Recheck for the
malfunction code.
A3P: Replace the
inverter PCB.
∗If the PCB replaced is
badly damaged, the
compressor is likely to
get faulty. To make
sure, recheck the
compressor.
A4P/A8P: Replace the
fan driver
PC board.
Replace the control
PC board.
End of measures:
The malfunction may
temporarily result from
on-site causes.
Causes:
Instantaneous power
failure (open phase),
noises, or else.
Troubleshooting