Our first failure.
Got back from a short (1 week) trip to California, ran the generator on the way out for the AC, but not on the way back. Went out to start the generator to get it warmed up to change the oil, and it started, ran rough for about 15 seconds or so, then shut down with a code of 15(under frequency). Restarted it and it ran for about 3 seconds and shut down, with a code of 37(Invalid Generator Set Configuration). Now every time I try to start it, it runs for about 3 seconds and sets a 37 code. I have no choice but to take it to the nearest Onan repair facility, 100 miles away. We have an appointment for this coming Wednesday. Hope they find the problem and it's not horribly expensive. I'd try to fix it myself, but the internet has not much solid on repairing a code 37. Wish me the best.
2006 Damon Daybreak 3276 35'with 5 Star Tuner. 3 200 Amp Lithium batteries and 2000 watt Pure wave inverter/charger. 2013 Elantra on a Master Tow dolly.