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Nick Taylor avatar image
Nick Taylor asked

12/2000 inverter stopped recognizing my Onan generator after firmware update

Hello all,

I have a Victron system (12/2000 inverter, cerbo, solar, etc) installed on a Grand Design RV. I put the system in a few months ago and it all worked together with shore power and the onboard generator (Onan QG 4000) like a champ when boondocking. Recently (after the most recent firmware update for the inverter and Cerbo), the inverter no longer recognizes the generator as a source of AC power. It's getting good voltage through the WFCO automatic transfer switch (122.2 voltages when I last checked) and passing it through to output terminals. But the inverter isn't switching out of inverting mode and the Cerbo screen shows a blank for grid power whenever the generator is running. When I shut the generator off and shore power takes over, the system sees shore power and everything works as expected.

Did the recent firmware update change something? or is there something that I can check to see if the generator output is somehow objectionable to the inverter? Again the same setup worked just a few weeks ago in a cross country boondocking trip.

Thx,

Nick

Generator
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2 Answers
nickdb avatar image
nickdb answered ·

Did you reload the configuration after the update, since updates do tend to wipe the config and reset it to default?

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Nick Taylor avatar image
Nick Taylor answered ·

Yes @nickdb , but I don't do this frequently so reached out to tech support at Battle Born (I bought the system through them) and they've been going through the config with me. We haven't found any errant settings yet, but curious if anyone else has had this problem since the firmware update.

Or is there something about the generator output that I should look for that would cause this phenomenon?

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nickdb avatar image nickdb ♦♦ commented ·

Maybe start with what inverter settings you have applied for the generator? That can be compared to the FAQ which generally resolves most problems.

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Nick Taylor avatar image Nick Taylor nickdb ♦♦ commented ·

Any idea where I can find the FAQ? sounds like that's something I need to read through.

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nickdb avatar image nickdb ♦♦ Nick Taylor commented ·

Have a read here:

https://www.victronenergy.com/live/multiplus_faq

(incidentally, when you tagged the post with "generator" it loaded some helpful references on the very top-right under "related resources")

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