jenronn Posted June 26, 2021 Share Posted June 26, 2021 My Onan 8kw runs great and powers everything when coach is parked or even plugged in to a/c. , however if the engine is running it will start up but then die as soon as the transfer switch kicks in. Also dies if it is running and you start the engine. I am leaving on a month long trip on Monday and need to get it fixed ASAP. Anyone else had this problem or have an idea? Link to comment Share on other sites More sharing options...
Guest Ray Davis Posted June 26, 2021 Share Posted June 26, 2021 Chances are you have a battery or batt cables problem. There has been a thread about this very thing over on IRV2, here's a link https://www.irv2.com/forums/f115/generator-dies-when-the-engine-is-started-542215.html Link to comment Share on other sites More sharing options...
jenronn Posted June 26, 2021 Author Share Posted June 26, 2021 Thank you Ray just checked out that thread, New batteries and cables a few months ago and all has been fine. My problem was different than that in the thread My generator starts and runs with engine running but quits when transfer switch kicks in even with no load at all. yet works fine even when plugged into shore power. Seems to be some isolator or solenoid problem that is not working when engine is also charging.. I'm not up on this but willing to tackle it if I get some direction where to look. Link to comment Share on other sites More sharing options...
Ivan K Posted June 26, 2021 Share Posted June 26, 2021 Does it produce a blink code when it dies or is it like if it was commanded to stop? Link to comment Share on other sites More sharing options...
jenronn Posted June 26, 2021 Author Share Posted June 26, 2021 Will check for the blink code tomorrow Thanks Ivan ,good point. It does not sound like it was told to stop almost like an overload or slow shutdown and the Xantrex panel goes haywire. There are no fault or warning codes when I check the panel. I will also review manual when I check for a blink code in the morning. Link to comment Share on other sites More sharing options...
Guest Ray Davis Posted June 26, 2021 Share Posted June 26, 2021 I would start by flipping the breaker switches on the gen. See if that males a difference, then turn them on one at a time and note what happens. Has any work been preformed, anything electrical done or changed recently? Could it be related to new batteries? Link to comment Share on other sites More sharing options...
wamcneil Posted June 27, 2021 Share Posted June 27, 2021 (edited) On 6/25/2021 at 10:20 PM, jenronn said: and the Xantrex panel goes haywire. I had a problem where my xantrex inverter lost its marbles and was shutting down the generator a few seconds after the transfer switch engaged. Almost bought a generator ecu board before I figured it out. Couple ways to try and rule this out: Onan troubleshooting guide says turn off the main breaker on the generator. If this solves your problem the issue is something outside the generator. Next, turn the gem main breaker back on and turn off the two breakers feeding the inverter inputs. If this solves your problem it’s probably the inverter. cheers Walter Edited June 27, 2021 by wamcneil Link to comment Share on other sites More sharing options...
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