Daikin Aurora Series Service Manual page 259

SiUS341802E
∗1. Connect and disconnect the connector once to ensure that it is securely connected.
Note:
Service Diagnosis
A
The
microcomputer
normal monitor indication
lamp (green) on the outdoor
unit main PCB (A1P)
is blinking.
YES
The
microcomputer
normal monitor indication
lamp (green) on the outdoor
unit main PCB (A1P)
is blinking.
YES
Is the
connector
between the outdoor
unit main PCB and the sub
PCB securely
connected?
YES
Is the
normal operation
indication LED on the sub
PCB blinking?
YES
The LC error recurs.
NO
Model Inverter PCB (∗2)
RXLQ-TATJU
RXLQ-TAYDU
RXLQ-TAYCU
RXYQ-TAYCU
NO
The fuse of
NO
the noise filter PCB has
blown out.
YES
NO
NO
YES
Fan PCB (∗3)
M1F: A4P
A3P
M2F: A5P
M1F: A4P
A3P
M2F: A5P
M1F: A6P
A4P
M2F: A5P
M1F: A6P
A4P
M2F: A5P
Troubleshooting by Error Code
This is not the LC error.
Recheck the error code.
NO
Replace the inverter PCB (∗2).
Replace all of the inverter PCB (∗2),
fan PCBs (∗3), and noise filter PCBs
(∗4).
Properly connect the connector.
Properly connect the connector X9A
(X10A) on the sub PCB option.
Replace the outdoor unit main PCB
(A1P).
Continue operation.
The error could have resulted from
causes such as instantaneous
power failure.
Noise filter PCB (∗4)
A2P
A2P
A2P, A3P
A2P, A3P
246