Daikin AT12BV1LS Pocket Manual page 91

Troubleshooting
Trouble
shooting
Check No.12
Refer to
P.163
90
Be sure to turn off power switch before connect or
Caution disconnect connector, or parts damage may be occurred.
Turn off the power and turn it
on again.
Get the system started.
∗ Running
current as shown at right
with relay cable
1 or 2?
NO
Check No. 12
Check the capacitor voltage.
DC380±30V?
NO
Measure the rectifier input
voltage.
Voltage
within the allowable
range (Supply
voltage±15%)?
NO
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
YES
Replace the outdoor
unit PCB.
Current Capacitor charged
(guideline) when the indoor unit
or outdoor unit main
relay turns on
Rising with increasing
frequency
YES
2 sec
A
YES
Replace the outdoor
unit PCB.
Check the supply
voltage.
* 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
Time
(R2848)