Troubleshooting Si12-308
188 Service Diagnosis
Troubleshooting
Check No.7
Refer to P.211
Check No.8
Refer to P.212
Check No.14
Refer to P.215
Replace the outdoor unit
PCB.
Replace the electrolytic
capacitor.
∗ Inverter checker
Part No.: 1225477
Correct the power supply or
replace the SPM.
(Replace the outdoor unit
PCB.)
(R2844)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Input current flowing
above its stop level?
NO
YES
Normal?
NO
YES
Any LED off?
YES
NO
Check with the inverter checker (∗).
Turn off the power, and reconnect
the harnesses. Turn on the power
again and get restarted.
Turn off the power and disconnect
the harnesses U, V and W.
Get restarted and measure the
input current.
Check No. 8
Check the discharge pressure.
Check No. 7
Check the installation condition.
Check No. 14
Check the main circuit electrolytic
capacitor.
∗ 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.
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