The AC Voltage Failure error message is frequently caused by something on the AC side of the inverter and not the inverter itself.
- Grab the AC plug connected on the right underside of the inverter and ensure it is fully pushed up into the socket
- If you have one, check the AC isolator underneath or next to the inverter to ensure it is in good condition and switched on
- Check the ‘Solar Supply Main Switch’ in the switch board, to ensure the switch in the on position. (If this is off, your circuit breaker may be underrated, please check it has the correct rating in the outcome section below)
- On the screen of the inverter, while the error message is being displayed, take note of the ‘N -> AC Voltage Value’
- If the Solar Supply main switch was off, make sure the circuit breaker is the correct rating. If yours is not as listed below, contact your solar installer to upgrade the circuit breaker
- Solivia 2.5, 3.0 and 3.3 require a 25A circuit breaker
- Solivia 5.0 require a 32A circuit breaker
- If the ‘N -> AC Voltage Value’ is around 0V — There is something on the AC side of the System that is causing no AC voltage to reach the inverter. Get your solar installer to check the inverter.
- If the ‘N -> AC Voltage Value’ is around 240V, while the error message is being displayed — Take a photo or video and submit a Return Request by clicking here (We will ask for these photos to process the request).