Daikin VRV X RXQ6-48ANR Series Service Manual page 234

Troubleshooting by Error Code
Check in Monitor Mode
For the models equipped with 2 compressors, check
the compressor M1C or M2C applicable to the error
code LC while in monitor mode of the outdoor unit.
Does the
relevant inverter PCB part No.
match that of the spare parts
insulation
resistance of the relevant
compressor is not
more than
100 kΩ.
The
insulation resistance
of the relevant fan motor
is not more than
1 MΩ.
microcomputer normal
monitor indication lamp (green)
on the outdoor unit main
PCB (A1P) is
blinking.
microcomputer normal
monitor indication lamp (green)
on the outdoor unit main
PCB (A1P) is
blinking.
Is the
connector
between the outdoor unit
main PCB and the inverter
PCB securely
connected?
The LC error recurs.
Note(s)
∗1. Connect and disconnect the connector once to ensure that it is securely connected.
228
A
NO
list?
YES
The
YES
NO
YES
NO
The
NO
YES
The
NO
noise filter PCB has blown
YES
NO
YES
YES
NO
Replace with a proper PCB.
Replace the compressor.
RXQ6-12AR: M1C
RXQ14/16AR: M1C, M2C
Replace the fan motor.
This is not the LC error.
Recheck the error code.
The fuse of the
NO
Replace the inverter PCB. (#1)
#1
out.
RXQ6-12AR: A3P
RXQ14/16AR: A3P, A6P
YES
Replace the reactor and all of the
inverter (#1), fan (#2),
and noise filter (#3) PCBs.
#2
RXQ6/8AR: A4P
RXQ10-16AR: A4P, A7P
#3
RXQ6-12AR: A2P
RXQ14/16AR: A2P, A5P
Properly connect the connector.
Replace the outdoor unit main PCB
(A1P).
Continue operation.
The error could have resulted from
causes such as instantaneous
power failure.
Part 6 Service Diagnosis
SiME341909EA