Daikin VRV-WIII RWEYQ72PTJU Service Manual page 234

Troubleshooting by Indication on the Remote Controller
226
Diagnosis Flow 3
Check of error 3 Check of error 4
Check
the connection
status of relay wires of
the condensing multi to SLAVE
1. Check if the wiring is
disconnected or is about to
be disconnected.
YES
Diagnosis Flow 4
Check of error 3 Check of error 4
Check
the connection
status of relay wires of
the condensing multi to SLAVE
2. Check if the wiring is
disconnected or is about to
be disconnected.
YES
Diagnosis Flow 5
Check of error 3 Check of error 4
Check
the connection
status of the relay
wires of condensing multi.
Check if the wiring has any
connection error or broken, or
is about to be
disconnected.
YES
NO
Replace the condensing unit
main PCB of the SLAVE 1.
NO
Replace the condensing unit
main PCB of the SLAVE 2.
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.
SiUS30-1301
Service Diagnosis