Daikin REYQ-TA Series Service Manual page 280

Troubleshooting by Error Code
267
Diagnosis Flowchart-5
UA-31
Error code Sub code
Is the multi
combination of
outdoor units
proper?
YES
Was the
outdoor unit PCB
replaced with a spare
PCB?
YES YES
Is the
procurement of the
spare PCB proper?
YES YES
Is the setting of the
spare PCB proper?
YES
NO
NO
NO
NO
SiUS371614E
Correct the multi combination of
outdoor units.
Replace the outdoor unit main PCB
(A1P).
Procure a proper spare PCB.
Make setting again, and then reset
the power supply.
Replace the outdoor unit main PCB
(A1P).
Service Diagnosis