Daikin VRV X RXQ6-48ANR Series Service Manual page 205

SiME341909EA
Reference
CHECK 4 Refer to page 264.
Part 6 Service Diagnosis
A
The insulation
resistance of the relevant
compressor is low
(< 100 kΩ)
Power OFF
The relevant
compressor has a
wiring disconnection
in it.
Restart the
compressor, and
then check for the
operation. Does the
error recur?
Power ON
Has the
compressor
started up at high
differential pressure
(0.5 MPa or
more)?
CHECK 4
Power OFF
Is the power
transistor
normal?
The error recurs at
Power ON
startup.
Replace the inverter
Power OFF
PCB. (#1)
The error recurs at
Power ON
startup.
YES
NO
YES
NO
NO
YES YES
YES
NO
NO
YES
NO
YES
NO
YES
Troubleshooting by Error Code
Replace the compressor.
RXQ6-12AR: M1C
RXQ14/16AR: M1C, M2C
Quit work.
Pressure equalization failure
may have occurred. Check for
the refrigerant system.
Pressure equalization failure.
Check for the refrigerant
system.
Replace the inverter PCB. (#1)
#1
RXQ6-12AR: A3P
RXQ14/16AR: A3P, A6P
Continue operation.
The error could have
resulted from instantaneous
power failure.
Continue operation.
Replace the compressor.
This is not a failure of the
inverter PCB. Reinstall the
PCB.
RXQ6-12AR: M1C
RXQ14/16AR: M1C, M2C
199