Genset Problem Generac Quietpac 65G

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Purple Frog

Member
Joined
Feb 10, 2009
Posts
23
Location
Havana Florida
Of course this pops up two days before we were planning to leave for Canada...

Genset starts and runs fine.
Puts out 127V on both 110 legs.
Clock on the microwave comes on.
Flat Screen TVs work fine.

Turn on any one of the A/Cs or the microwave and in about 10 seconds the Generator power shuts off.
Generator is still running. With a meter at the Genset... no current.

About 3 minutes later it starts producing current again.
But, if one turns on any high demand device the genset quits producing power.
Demand a load and the little red LED on the voltage regulator (brand new) goes off. No voltage on the lines on the genset side of the breakers.

Transfer switch works fine all the time.

Any help would be appreciated.
Know anybody that will work on a Generac between Florida and montreal?  :)
 

Moonwink

Member
Joined
Feb 16, 2012
Posts
6
Location
near St. Louis, MO
Plug a Kill-A-Watt into an outlet and watch the frequency (Hz)  if it deviates much from 60Hz, the control board could be taking the alternator off line until it sees that it's steady again in the proper range.
https://www.amazon.com/dp/B07P8M7N9F/
51C43-5CNEL._SL1200_.jpg
 

Purple Frog

Member
Joined
Feb 10, 2009
Posts
23
Location
Havana Florida
Moonwink

I think you are on to something.  I checked voltage out, but not Hz.
The governor on the Genset may be out of adjustment.
Maybe I can find a Hz meter local tomorrow...
 

Bobtop46

Well-known member
Joined
Mar 11, 2011
Posts
837
Location
Bronson FL
Straight guess.  I always suspect the last thing that was messed with before a problem occurs, in this case your new voltage regulator.  Maybe during the install something was left disconnected or loose. 
 

Purple Frog

Member
Joined
Feb 10, 2009
Posts
23
Location
Havana Florida
I think we solved it. Thanks Moonwink!  :))

Went out and bought a Hz meter.
Genset was only putting out 50 Hz.
Adjusted the governor.
Set to 62 Hz as per Generac manual.

Then had to reset pot on voltage regulator down to 124 volts.

Now it seems to be functioning fine.

Vacation may be saved yet.  8)
 
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