Daikin VRV-WIII RWEYQ72PTJU Service Manual page 235

SiUS30-1301
Service Diagnosis
Diagnosis Flow 6
Check of error 3 Check of error 4
Check the
connection status
of one of the relay wires of
condensing multi. Check if the
wiring is broken or
disconnected.
YES
Diagnosis Flow 7
Check of error 3 Check of error 4
In the
connection status of
the condensing multi, check if
more than 4 condensing units
are connected.
YES
Troubleshooting by Indication on the Remote Controller
NO
Replace the condensing unit main
PCB.
Correct the relay wires of the
condensing multi and then reset
the power supply.
NO
Replace the condensing unit main
PCB.
Correct the relay wires of the
condensing multi and then reset
the power supply.
227