Daikin VRV S RXQ4/5ARV1 Service Manual page 283

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