Daikin VRV RXYQ72-384XAYCA Service Manual page 325

SiUS342004EB
Note(s)
1. Connect and disconnect the connector once to ensure that it is securely connected.
Part 6 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
Inverter PCB (2) Fan PCB (3)
M1F: A6P
A4P
M2F: A5P
NO
The fuse of the
NO
noise filter PCB has
blown out.
YES
NO
NO
YES
Noise filter PCB (4)
A2P, A3P
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.
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