Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 174

Troubleshooting by Remote Controller
Troubleshooting
164
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Diagnosis Flow 3
Confirmation of error 3 Confirmation of error 4
Check the connection status of
connecting wires of the outdoor multi
to SLAVE 1. Check if the wiring is
disconnected or is about to be
disconnected.
YES
Diagnosis Flow 4
Confirmation of error 3 Confirmation of error 4
Check the connection status of
connecting wires of the outdoor multi
to SLAVE 2. Check if the wiring is
disconnected or is about to be
disconnected.
YES
Diagnosis Flow 5
Confirmation of error 3 Confirmation of error 4
Check if the outdoor
unit is connected to
multi-system.
YES
NO
NO
NO
SiBE341027
Replace the outdoor unit main
PCB of the SLAVE 1.
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Replace the outdoor unit main
PCB of the SLAVE 2.
Correct the connecting wires of
the outdoor multi and then reset
the power supply.
Replace the outdoor unit main
PCB.
Remove the connecting wires of
the outdoor multi and then reset
the power supply.
Service Diagnosis