Hi all! I have an old Onan Emerald III generator built into my Airstream. It starts and runs great. My problem is that it's no longer charging my four 6V house batteries via my Victron MultiPlus 3000 inverter. It used to work just fine, and I'm not sure what has changed. I have a good amount of solar, so I rarely rely on my generator, but man oh man, it's nice to have when you need it!
Like most, I'm not an electrical expert, but here's what I've discovered from some basic detective work:
1) My inverter and batteries are working fine with solar and when plugged into shore power.
2) I've checked the fuses/circuit breakers inside the Airstream (that I know of) with a multimeter and everything seems fine.
3) There is a Blue Sea Systems circuit breaker that was part of the solar install. The green light turns on when plugged into shore power, but not when running the generator (I believe it used to when the generator was still charging the batteries).
4) When I first tried to diagnosis this issue, I did notice that one of the small circuit breakers on the generator was flipped. Saw something similar (different Onan model) in this YouTube video (@ around 2:30):
. I then put it in the "on" position, but it didn't seem to make a difference.
5) The inverter no longer recognizes (i.e. lights up) when running the generator. I believe I used to use the "charger only" mode on the main inverter on/off button.
Okay, I'll leave it at that. For all you folks more expert than I, please let me know what other info would be helpful to narrow things down and if I should attach any pics of the hardware in question. Thanks in advance!
Linear Mode
