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Old 12-10-2015, 10:29 PM   #1
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Is there a problem with my standby generator?


I have a 3 year old Generac 8kw standby generator. Today we had a power outage. The generator came on, but I got no power.
I found there was 123v in both the wires going from the generator to the transfer switch, but there was only 3v between them; not the 240v I expected. A replay was open so no power was getting to the circuits; presumably it requires 240v.
I called the company that services it and they suggested I manually turn the generator off and back on. That fixed it. I got 240v at the transfer switch and power to my circuits. The service man said I had reflashed the coils, whatever that is. He wasn't very concerned about it. Utility power came back in 10 minutes.
Later in the day I opened the 50a circuit in my panel going to the transfer switch to simulate a power outage. The generator came on and worked normally.

So...
What happened to my generator? Is it a common problem? Does it require any service?
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Old 12-10-2015, 11:03 PM   #2
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The generator needs a bit of magnetism to begin generating electricity. Once it starts spinning the magnetism builds until reaches the proper amount. If the magnetism fades too low it can get started and needs to be flashed it magnetize the stator again.
This usually happen when a unit is not run long periods. Does your unit get exercised. Many units will start automatically once a week for ten minutes.
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Old 12-10-2015, 11:56 PM   #3
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Go onto you tube
Search for "flash the feild"
You can do it with two drills.
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Old 12-11-2015, 06:38 AM   #4
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Quote:
Originally Posted by Toller View Post
I have a 3 year old Generac 8kw standby generator. Today we had a power outage. The generator came on, but I got no power.
I found there was 123v in both the wires going from the generator to the transfer switch, but there was only 3v between them; not the 240v I expected. A replay was open so no power was getting to the circuits; presumably it requires 240v.
I called the company that services it and they suggested I manually turn the generator off and back on. That fixed it. I got 240v at the transfer switch and power to my circuits. The service man said I had reflashed the coils, whatever that is. He wasn't very concerned about it. Utility power came back in 10 minutes.
Later in the day I opened the 50a circuit in my panel going to the transfer switch to simulate a power outage. The generator came on and worked normally.

So...
What happened to my generator? Is it a common problem? Does it require any service?
Run it for several minutes every few weeks and it should be ready when you need it.
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Old 12-11-2015, 09:58 AM   #5
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It runs for 10 minutes every week, but it doesn't power anything

So, this is just something that happens and I shouldn't be concerned about it?
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Old 12-11-2015, 10:48 AM   #6
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It is rare but it should not be happening.
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Old 12-11-2015, 03:49 PM   #7
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Quote:
Originally Posted by Toller View Post
It runs for 10 minutes every week, but it doesn't power anything

So, this is just something that happens and I shouldn't be concerned about it?
If your generator is getting its regular exercise and you have this issue, then you might have a problem.
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Old 12-11-2015, 04:30 PM   #8
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Running the geeny unloaded may stop the
Motor gumming up
But it will not help the alternator !
You need to run it loaded.
Otherwise the residual magnatism
of the feild will fade away.
The only way to keep it up
is to run current thru it regularly.
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