Daikin RXYQ-TA Series Service Manual page 266

Troubleshooting by Error Code
∗1. Connect and disconnect the connector once to ensure that it is securely connected.
Note:
253
A
The insulation
resistance of the YES
relevant fan motor is
not more than
1 MΩ.
NO
The
microcomputer normal
NO
monitor indication lamp
(green) on the control
PCB (A1P) is
blinking.
YES
The
microcomputer normal
NO
monitor indication lamp
(green) on the control
PCB (A1P) is
blinking.
YES
Is the
connector
between the control
NO
PCB and the sub PCB
securely
connected?
YES
Is the
normal operation
NO
indication LED on the sub
PCB blinking?
YES
YES
The LC error recurs.
NO
The fuse of
NO
the noise filter PCB has
blown out.
YES
SiUS341615E
Replace the fan motor.
This is not the LC error.
Recheck the error code.
Replace the inverter PCB.
RXYQ72-120TA: A3P
RXYQ144/168TA: A3P, A6P
Replace all of the inverter, fan, and
noise filter PCBs.
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.
Service Diagnosis