Daikin RTSQ20PY1 Service Manual page 318

Troubleshooting by Indication on the Remote Controller
Troubleshooting
307
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Diagnosis Flow 3
Confirmation of Confirmation of
malfunction 3 malfunction 4
Check the connection status of
connecting wires of Multi Slave 1 with
outdoor multi. Check if the wiring is
disconnected or is about to be
disconnected.
NO
Diagnosis Flow 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Check the connection status of
connecting wires of Multi Slave 2 with
outdoor multi. Check if the wiring is
disconnected or is about to be
disconnected.
NO
Diagnosis Flow 5
Confirmation of Confirmation of
malfunction 3 malfunction 4
Check if the outdoor
unit RTSQ8~16PY1 is
connected to multi-
system.
NO
YES
YES
YES
SiBE31-801_C
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Replace the outdoor unit main PCB
(A1P) of the Multi Slave 1.
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Replace the outdoor unit main PCB
(A1P) of the Multi Slave 2.
Remove the connecting wires of
the outdoor multi and then reset
the power supply.
Replace the main PCB (A1P) of the
outdoor unit.
Troubleshooting