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Ask Hank F. Your Own Question
Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14489
Experience:  Certified on Onan and Generac generators
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I wanted to ask about the possible reasons my generator

Customer Question

Hello,
I wanted to ask about the possible reasons for why my generator fails to run.
It's a 10000W generator with the serial number 04079-0
It runs for under a minute and the HIGH TEMP and OVER SPEED lights come on.
What could be the possible causes of this malfunction?
-Kamil
Submitted: 1 year ago.
Category: Small Engine
Expert:  Hank F. replied 1 year ago.
Hello!
My name is ***** ***** I am going to assist you with this.
4079-0 is a model number.
What is the actual serial number?
.
Customer: replied 1 year ago.
Serial number3191299 what other info do you need?
Expert:  Hank F. replied 1 year ago.
This is an old Generation I unit.
The most likely cause of it shutting down that quick, with 2 warning lights, is a bad control board.
But it is possible that it is running too fast, and you have a bad temperature switch.
To verify if it is actually running too fast, connect a frequency meter to the AC output, and start it up.
Frequency should be right at 60 Hz.
If the frequency is high, we need to figure out why.
If the frequency is good, the control board is most likely bad.
.
Expert:  Hank F. replied 1 year ago.
Was this what you wanted to know?
.