What to do if the Fault Light is on and there is no output voltage on my Xantrex XPower 1000 Inverter?
- MMichael OlsonAug 17, 2025
If the Fault Light is on and there's no output voltage on your Xantrex Inverter, possible causes include low or high input voltage, thermal shutdown, unit overload, or a short circuit in the output. To resolve this, recharge the battery and check all connections and cables, ensuring the inverter is connected to a 12V battery. Also, verify the charging system's voltage regulation. If it overheated, allow the unit to cool down, reduce the load, and improve ventilation by ensuring the inverter's openings aren't blocked and lowering the ambient temperature. Finally, reduce the load to not exceed the inverter’s output rating and remove any short circuits.