I have the inverter 1000 watts, ran by a 12 v car battery which is charged by a generater, the cables from the battery to the inerter is a foot long, it was working perfectly until we turned it off one night and the next morning when we turned it on the the green light and the red fault light keeped flashing off and on and now its just the red light all we had hooked up was a dvd player which is no more then 50 watts and a 60 watt light bulb, also have a 1800 watt inverter with a simular problem, we tried changing batteries just to make sure it was the battery but that wasn't the problem, we also tested the battery and it is charging very well thank you for your time and I hope to hear back from you shortly, thank you, and best regards Shane Synard

Electronics - Others - Xantrex Technology - Xantrex Technologies 813-1000-00 XPower 1000 Watt Inverter