Daikin Aurora Series Service Manual page 255

SiUS341802E
Service Diagnosis
Power OFF
CHECK 4
Is the power
transistor normal?
Restarting the
system results in the
recurrence of the
error.
Difference
between High
pressure and Low pressure
before the compressor
restart is below 0.2
MPa?
Power OFF Replace the inverter PCB.
Restarting the
system results in the
recurrence of the
error.
Power
supply voltage
Power OFF
falls within ±10% of the
rated voltage?
CHECK 4 Refer to page 286.
A
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
Troubleshooting by Error Code
Replace the inverter
PCB.
RXLQ-TATJU,
RXLQ-TAYDU: A3P
RXLQ-TAYCU,
RXYQ-TAYCU: A4P
Continue operation.
(
The error could have
resulted from causes
such as instantaneous
power failure.
Pressure equalization
failure. Check the
refrigerant system.
Continue operation.
Replace the
compressor.
Connect to power supply
within ±10% of the rated
voltage.
)
242