Daikin VRV-WIII RWEYQ72PTJU Service Manual page 202

Troubleshooting by Indication on the Remote Controller
CHECK 11
194
A
Is the
connection
between the
thermistor on the heat
exchanger gas side (R4T)
and the low pressure
sensor (S1NPL)
proper?
YES
Are characteristics
of the thermistor on the
heat exchanger gas side
(R4T) and the low
pressure sensor
(S1NPL)
normal?
CHECK 11
YES
Is the coil of
compressor broken?
NO
The power
transistor is normal?
CHECK 4
YES
Connect the relay cable to the
compressor, and the restart
the operation.
Error is displayed
again?
YES
CHECK 4 Refer to P.244.
Refer to P.250.
NO
NO
YES
NO
NO
SiUS30-1301
Connect the connector properly.
Replace the thermistor/sensor if
any of its characteristics are
abnormal.
Replace the inverter compressor.
Replace the inverter PCB
concerned.
Continue the operation.
Replace the condensing unit
main PCB.
Service Diagnosis