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Old 08-19-2013, 11:35 PM   #1
Junior Member
Join Date: Jun 2013
Posts: 25
Generac 40QP question

Hi all,

Just finished our first trip in our (new to us) 2011 2301. One thing we ran into was that a couple of times when we ran the generator- Generac 40QP, when we would turn the AC on, after a few minutes, the generator would sputter, stumble and then die. This seemed to correspond to the compressor kicking on.

This happened a couple of times, both while parked and while on the move. The generator has 33 hours on it and I did change the oil before our trip. This only occurred when attempting to use the AC, and not while using any other appliance.

Other than a couple of times where this happened, the generator and the AC unit functioned without issue.

Does anyone have any ideas on why this is happening, and what I should check to troubleshoot this issue? For what it's worth, the RV was originally from Indiana (closer to sea level) and we are currently in Denver, and was at a similar altitude (Mt. Rushmore) when we noticed this problem.

Any help would be appreciated! Thanks again!

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Old 08-20-2013, 08:32 PM   #2
bclemens's Avatar
Join Date: May 2011
Location: Elkhart, IN
Posts: 12,243
There is an altitude adjustment on the Onan...not sure about the Generac and we don't use them at the factory anymore so I can't look. I would check the manual (or search for the online manual) Should explain it there.
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