I had the same issue while running the auto start feature. I turned the xantrex unit off, then I started my generator, let it run for a few minutes, then turned the xantrex back on. It reset itself then.
I had the auto start set to start the gen when the voltage reached 11 volts, per the Magnum manual. I got the low voltage E02 message before the gen ever started, and since it was in error mode, it wouldn't auto start.
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