Question about Generac Guardian Electrical Supplies
I have a Guardian Plus Generac Generator. When I try to start it either manual or automatic, it starts right up then goes to over speed and shuts down. What could the problem be. It was fine and my husband put in a new battery and the problem began.
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Posted on Jan 02, 2017
If this is one of the big "taco cart" portables you need to check that the vent on the gas cap is open when you're running the engine. In the center of the gage on the gas cap is a little knurled knob, turn it counter clockwise (lefty loosey), about a half turn or so and run the generator.
If that doesn't solve your problem add to it here, otherwise please give me a rating I'm trying to build a little credibility here and could use the help.
Posted on Dec 02, 2008
SOURCE: Generac Guardian 15kW Generator
That sounds just about right, if the relay contacts get welded together it sometimes takes out the driver on the printed circuit board. As you found out, 12vdc from 23 to 194 makes the transfer switch move to the Generator position, relay not energized makes the ATS move to the Normal position.
You can make a nice test function by installing a 10 amp contact switch in series with either the N1 or N2 terminals. When the switch is open the generator thinks the Normal power has failed.
Posted on Jan 26, 2009
If the unit is using a wet cell acid battery, it's possible that dirt mixed with hydrogen build up on top of the battery caused the second failure. The battery top should be kept clean and should be checked at least 4 times per year. Any stray ignition source can cause the hydrogen to explode, including lightning.
It's also possible that the battery float charger needs to be adjusted or possibly has a problem. Some float chargers are adjustable. The higher the charging rate the more off-gassing the battery will experience and increase the chance of a failure.
If the battery has exploded, the entire generator and housing should be cleaned (washed) thoroughly to remove any remaining battery electrolyte (acid).
Be careful - if you aren't comfortable working on this type of equipment, it's best to call a local dealer and find a service vendor.
Posted on Jul 07, 2010
My cousin has one of these models and the same thing happened to his. It was the natural gas regulator valve that went out. He could hear the clicking noise which is the spark ignitor trying to ignite the gas pilot light. After replacing the gas regulator the unit work fine as ever
Posted on Nov 02, 2010
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