Daikin AT12BV1LS Pocket Manual page 93

Troubleshooting
Note: If the model doesn't have SPM, replace the outdoor unit
92
A
Turn off the power. Disconnect
the harnesses U, V and W.
Check with the inverter
checker (∗).
Any LED off?
NO
Turn off the power and reconnect
the above harnesses. Then turn
on the power again and get the
system restarted.
Compressor running?
NO
PCB.
* Inverter checker
Part No.: 1225477
YES
Correct the power
supply or replace the
SPM.
(Replace the outdoor
unit PCB.)
YES
Replace the outdoor
unit PCB.
Replace the
compressor.
Service Diagnosis
Si10-417
(R3042)