Daikin VRV S RXQ4/5ARV1 - Page 283

SiAF332111E Troubleshooting by Error Code
Part 6 Service Diagnosis 277
Note(s)
Reference
1. RXMQ6AR: outdoor unit main PCB (A1P)
RXMQ8AR: inverter PCB (A3P)
CHECK 4 Refer to page 340.
A
NO
YES
The
insulation
resistance of the
compressor is 100 k or
less to ground.
Replace the compressor
(M1C).
YES
The internal
wiring of the
compressor coil is
defective.
Replace the compressor
(M1C).
YES
NO
Replace the relevant
PCB
(1).
NO
Power OFF
CHECK 4
Is the power
transistor normal?
YES
The difference
between high and low pressure
before restarting is less than
0.2 MPa.
Defective equalization of
the refrigerant line.
NO
YES
L8 recurs.
Continue operation.
NO
Connect the compressor lead
wires and restart.
Power OFF
YES
Restarting the
system results in the
recurrence of the
error.
Continue operation.
NO
Replace the inverter PCB (A3P).
RXMQ8AR Only
Diagnose the
compressor (M1C).