Daikin RQYQ140-180PY1 Service Manual page 188

Troubleshooting by Remote Controller
Troubleshooting
179
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Diagnosis Flow 7
Confirmation of malfunction 3 Confirmation of malfunction 4
Faulty wiring between BS units
Is the wiring between
the BS units correct?
YES
Diagnosis Flow 8
Confirmation of malfunction 3 Confirmation of malfunction 4
Faulty wiring between indoor units and BS units
Is the connection
wiring between the
indoor unit and the BS
unit correct?
YES
Diagnosis Flow 9
Confirmation of malfunction 3 Confirmation of malfunction 4
Connection of erroneous models BS units
Is BSVQ-P model
connected to the
system?
YES
NO
NO
NO
SiBE341001
Correct the connection wiring.
Replace the BS unit PCB
concerned.
Correct the connection wiring.
Replace the indoor unit or BS unit
PCB.
Connect BSVQ-P model.
Replace the outdoor unit PCB.
• With individual systems, replace
the control PCB (A1P).
• With multi systems, replace the
main PCB (A1P).
Troubleshooting