Daikin VRVII Manual page 314

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Caution
Check of error 3
of outdoor multi. Check if
Check of error 3
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Diagnosis Flow 6
Check of error 4
Check
the
connection
status of one of
the connecting wires
the wiring is broken
or disconnected.
YES
Diagnosis Flow 7
Check of error 4
In
the
connection
status of the
outdoor multi, check if
more than 4 outdoor
units are
connected.
YES
NO
Replace the
outdoor unit main
PCB.
Correct the
connecting wires
of the outdoor
multi and then
reset the power
supply.
NO
Replace the
outdoor unit main
PCB.
Correct the
connecting wires
of the outdoor
multi and then
reset the power
supply.
309