Daikin VRV Aurora RXLQ-TATJU Series Service Manual page 319

SiUS341802EC
Troubleshooting
Note(s)
Reference
CHECK 4 Refer to page 372.
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn OFF the power supply
once, and then turn it ON
again.
Return to normal?
NO
CHECK 4
Is the power
transistor normal?
YES
CHECK 4
Is the power
transistor of the fan
driver normal?
YES
Model
RXLQ-TATJU
RXLQ-TATJA
RXLQ-TBTJA
RXLQ-TAYDU
RXLQ-TAYDA
RXLQ-TBYDA
RXLQ-TAYCU
RXLQ-TAYCA
RXLQ-TBYCA
RXYQ-TAYCU
RXYQ-TAYCA
YES
NO
Is the
insulation to
ground resistance of the
relevant compressor 100
k or more?
YES
NO
Inverter PCB (1)
A3P
A4P
Troubleshooting by Error Code
The error could have resulted from
external factors other than failures
(e.g. external noise or thunder).
NO
Replace the compressor and the
inverter PCB (1) together.
Replace the inverter PCB (1).
Replace the inverter PCB (1) and the
fan PCB (2).
Replace the inverter PCB (1).
Fan PCB (2)
M1F: A4P
M2F: A5P
M1F: A6P
M2F: A5P
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