Daikin VRV Aurora RXLQ-TATJU Series Service Manual page 323

SiUS341802EC
Troubleshooting
Note(s)
1. RXLQ96/120TATJU, RXLQ96/120TATJA, RXLQ96/120TBTJA, RXLQ96/120TAYDU,
RXLQ96/120TAYDA, RXLQ96/120TBYDA
2. 208/230 V and 460 V models: A3P
575 V models: A4P
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check for the cooling
conditions of cooling tube
used to cool the inverter.
(1) Is the cooling tube plate
fixed with screws?
(2) Error code U0 is displayed
on the Error History
screen.
Normal?
YES
Except (*1)
In case of (*1)
Reinsert the connectors X7A
and X8A for fin thermistors
(R71T, R72T) on the inverter
PCB (*2) correctly.
Turn ON the
power supply, and then
press the ON button
continuously. Does
the error
recur?
YES
Power
supply voltage
Power
falls within ±10% of
OFF
the rated voltage?
NO
NO
NO
YES
Troubleshooting by Error Code
Rectify troubles.
Continue operation.
Field factor. Power module temperature
may have risen due to high outdoor air
temperature.
Replace the inverter PCB. (*2)
Connect to power supply within ±10%
of the rated voltage.
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