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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14440
Experience:  Certified on Onan and Generac generators
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I have a generac guardian 6052. It stopped And the alarm says

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I have a generac guardian 6052. It stopped And the alarm says low voltage. What causes this and how do you fix it
Thank you for choosing Just Answer for the solution to your problem.
My name is XXXXX XXXXX I am going to assist you with this.

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A genset is a complex machine, and troubleshooting can sometimes become somewhat extended.

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Now with that being said, let’s find and fix your problem.



The Low Voltage alarm means that the genset is not putting out the proper amount of electricity - it is too low.
A control board will most likely not fix this issue - there is less than a 1% chance that the board is the problem.

But to help you find the problem, I need the full model and serial numbers of the genset.
Hank F. and other Small Engine Specialists are ready to help you
Customer: replied 4 years ago.
The model number is XXXXX and the serial number is XXXXX It says under voltage on the alarm
I need you to recheck your numbers.
6052 is only a partial model number, and I need the entire number.
Also, you have 1 too many digits in the serial number - there should only be 7,.

When was this genset purchased and installed?
Customer: replied 4 years ago.
It is a generac model(NNN) NNN-NNNN Serial no is(NNN) NNN-NNNN
Customer: replied 4 years ago.
Have you figured it out yet,
I'm sorry - we had a family emergency. My wife's uncle passed away this morning, and I just now got home.

The first thing I need to tell you is that having just bought your genset in February, it is still under warranty.

The best thing to do would be to contact the selling/servicing dealer to have it repaired under warranty.
Working on this set yourself could easily void the warranty - and I'd sure hate to see you lose that.

But if you do not mind risking the loss of the warranty, here is what you need to do first:
Remove the control panel from the top of the genset.
Connect a voltmeter across the 2 large wires marked 11 and 44 (they go to the circuit breakers).
Start the set, and note what the voltage is before it shuts down.
What is the voltage.

Now remove one of the meter leads from either wire 11 or 44, and connect it to ground,.
Set your meter to read frequency, and start the set.
What is the frequency before it shuts down?
Customer: replied 4 years ago.
Thanks. I have called someone and they are going to replace the control panel....but like you said it is 1% the problem. This is why I need some more info. thanks.
Please follow up with me, if you do not mind.
If you are still having trouble after the board is installed, I would be happy to work with you until you get the issue resolved.

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