Daikin AT12BV1LS Pocket Manual page 58

Si10-417
Trouble
shooting
Check
No.7-2
Refer to
P.159
Check No.8
Refer to
P.160
Check No.14
Refer to
P.164
Note: If the model doesn't have SPM, replace the outdoor unit
Service Diagnosis
Be sure to turn off power switch before connect or
Caution disconnect connector, or parts damage may be occurred.
∗ An input over-current may result from wrong internal wiring. If the
wires have been disconnected and reconnected for part
replacement, for example, and the system is interrupted by an input
over-current, take the following procedure.
Get restarted and measure the
input current.
Input
current flowing above
its stop level?
YES
Check No. 14
Check the main circuit
electrolytic capacitor.
Normal?
YES
Turn off the power and
disconnect the harnesses U, V
and W.
Check with the inverter
checker (∗).
Any LED off?
NO
Turn off the power, and
reconnect the harnesses. Turn
on the power again and get
restarted.
Check No. 8
Check the discharge
pressure.
Check No. 7-2
Check the installation
condition.
PCB.
Troubleshooting
NO
Replace the outdoor
unit PCB.
NO
Replace the
electrolytic capacitor.
∗ Inverter checker
Part No.: 1225477
YES
Correct the power
supply or replace the
SPM.
(Replace the outdoor
unit PCB.)
(R2844)
57