Daikin RTSQ20PY1 Service Manual page 326

Troubleshooting by Indication on the Remote Controller
Troubleshooting
315
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 if the
outdoor unit
PCB is replaced
with PCB for
spare parts.
YES
Is a correct spare
PCB procured?
YES
Check if the spare
PCB setting is
correct.
YES
Diagnosis Flow 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Is the model BP
connected?
NO
Check if the unit
NO
is not connected
to outdoor units
of different
models.
YES
NO
NO
YES
SiBE31-801_C
NO
Replace the main PCB of the
outdoor unit.
Check the model of the outdoor
unit.
Replace it with the correct spare
PCB.
Correct the setting to reset the
power.
Replace the spare PCB.
Connect the indoor units correctly.
Replace the outdoor unit PCB.
Troubleshooting