Daikin VRV RXYQ72-384XAYCA Service Manual page 323

SiUS342004EB
Reference
CHECK 4 Refer to page 362.
Part 6 Service Diagnosis
A
Refrigerant is
YES
stagnated. (The unit is out
of power supply for more
than 6 hours.)
NO
Is the
insulation
resistance of the
NO
relevant compressor
100 kΩ or more?
YES
The internal
YES
wiring of the
compressor coil is
defective
NO
CHECK 4
NO
Is the power
transistor normal?
YES
Troubleshooting by Error Code
Solve the refrigerant stagnation.
(Power should be supplied for more
than 6 hours.)
Replace the compressor.
Replace the compressor.
Replace the inverter PCB (A4P).
Recheck for the compressor and the
refrigerant system.
316