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Globetrotter's avatar
Globetrotter
Explorer
May 17, 2015

Onan Generator Power Production Issue

Hi,
Our 10K Onan starts/runs fine and was recently serviced with no issues noted on the unit itself. The issue below was occurring prior to having the genset serviced.
The issue as of late is that it produces power under a good load for about 20-30 minutes and then start tripping out. It will try to come back on and will only stay on if we run minimal load such as the fridge/tv. Anything more and it will cut out. The Genset itself remains running fine throughout.
On shore power all works fine and we can load it right up with multiple appliances/ac units etc.
If we leave it for some time and try again the same occurs, runs and produces good power for 20-30 mins and then starting shutting down the power supply or perhaps it is no longer producing the required power.
We do exercise the genset every month for a few hours under a good load. It worked fine all winter and started this issue on our way home.
I am thinking it is either the genset power production part of the genset or my power mgmt system in the rig.
Any thoughts or experience with this issue would be appreciated.
Thanks!!

3 Replies

  • Ivylog's avatar
    Ivylog
    Explorer III
    You should be able to monitor the output of your generator on your Aladdin system. It will show the Volts/Amps/Cycles of each leg of the power. Hopefully it will show what's not up to speck to help narrow down what's wrong. Your management system will shut down (trip out) if the Volts gets below 109 and then after about 30 seconds it will try and come back on.
    My 10K will run everything in the coach... all three ACs, AHot on electric, dryer running........
  • Its hard to say without a volt/amp meter on it but I suspect it is not your Genset causing the problem and it is something like your AC unit that is pulling too much power. About the only way to really tell is turn on the Gen and add one thing at a time and monitor current draw then do the same on shore power.