Question about Guardian Rv Generator 4800 Watt, Gasoline, Primepact 50G

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RPM/voltage fluctuation on Guardian Primepact 50G

Under no load RPM sags and the voltage sags from 120v to 112v and then comes right back up to 120v with RPM increase. Under load the same thing happens but with a smaller range 115V to 110V. Just had new crank seals installed by a Generac shop with 30 years exp. Prior to service it had a 1 or 2 volt fluctuation no load and stable inder load.

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The voltage regulator board on this unit is notorious for failing. If you are handy, you can replace it yourself with basic tools and a voltmeter to set the output. The part is about 200 dollars. Good luck

Posted on Sep 06, 2010

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Go to - look in their Service manuals section - good luck!!

Posted on May 28, 2009


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