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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14484
Experience:  Certified on Onan and Generac generators
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I have a Guardian/Generac standby house generator system

Customer Question

I have a Guardian/Generac standby house generator system rated at 16kw on LP. Appears to produce normal voltages 230/115VAC during the weekly 12 minute exercise program, however under load during an utility power failure the generator output voltages runs up to 300/150VAC. Could this be a sign of a voltage regulator failure?
Please advise.
Thank you ***** ***@******.***
h.***-***-****
Submitted: 5 months ago.
Category: Small Engine
Expert:  Hank F. replied 5 months ago.

Yes, this could very easily be a voltage regulator issue.

The unit should hold voltage whether there is a load on it or not.

Expert:  Hank F. replied 5 months ago.

Did you get my reply?