Thor Forums

[Beau388]

With Xantrex inverters, an E03 error shuts down the inverter completely. It will not pass any power until reset. To reset the inverter, you must remove all power from the inverter (12 volt and 120 volt) and allow time for the capacitors to discharge. This can take up to 12 hours. Typically an E03 error is caused by a sudden increase of current draw from the inverter while inverting. My Xantrex has a 30 amp pass through relay but will inverter only 18 amps. It is on any time I am on shore power or the generator is running. If I am drawing 20 amps or more from the pass through relay in the inverter and loose shore power for anytime the inverter will immediately alarm and show an E03 error.