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