Daikin RQYQ140-180PY1 Service Manual page 179

SiBE341001
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Diagnosis Flow 6
Confirmation of malfunction 3 Confirmation of malfunction 4
Are manual address settings (of the
slave units 1, 2 and 3) correct i n order
to connect the AIRNET?
YES
Check the connection status of one of
the connecting wires of outdoor multi.
Check if the wiring is broken or
disconnected.
NO
Diagnosis Flow 7
Confirmation of malfunction 3 Confirmation of malfunction 4
In the connection status of
the outdoor multi, check if
more than 5 outdoor units
are connected.
NO
Diagnosis Flow 8
Confirmation of malfunction 3 Confirmation of malfunction 4
Check the connecti o n status of the
connecting wi r es of outdoor multi. to
SLAVE 3 Check i f the wiring has any
connecti o n error or broken, or is about
to be disconnected.
NO
Troubleshooting by Remote Controller
NO
YES
YES
YES
Correct the manual address
settings.
(For detail, refer to information in
the "AIRNET Installation Manual".)
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Replace the main PCB (A1P) of the
outdoor unit.
Correct the connecting wires of
the outdoor multi and then reset
the power supply.
Replace the main PCB (A1P) of
the outdoor unit.
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Replace the outdoor unit main PCB
of the SLAVE 3.
170