What to do if Motomaster Inverter has no output voltage and fault light is on?
- Ccasey09Aug 2, 2025
If the Fault light is on and there's no output voltage from your Motomaster Inverter, several issues could be at play: low or high input voltage, thermal shutdown, unit overload, or a short circuit in the output. First, 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, let the unit cool down, reduce the load, and improve ventilation, ensuring the inverter's openings aren't blocked and lowering the ambient temperature. If overloaded, reduce the load to stay within the inverter's output rating. Finally, remove any short circuits.