Kris K Voeks
Sunday one of my customers took a direct hit to the pole transformer right next to where power came to their meter base on a free standing garage where of course their 200 amp transfer station for their 22kw generator. The lightening blew the line fuses on the pole transfer and another protective devise on the transformer, all this information was take from the line crew who repaired the damage. Also the meter itself was damaged. 
A couple of breakers inside the free standing garage had tripped and all three GFI's failed in that building.
At the house 100' away where the generator itself is located a few breakers had tripped on the house electrical panel but no damaged GFI's.
Back at the transfer station in the free standing garage the N1 and N2 fuses were comprimised, I replaced them.
There was a red and yellow light on the generator when I arrived and I believe the LED display had an error code 2400 (not totally confident on that one). 
While power was still not restored I replaced the N1 and N2 fuses and turned the generator from OFF to Automatic. The generator started and ran but did not transfer the power and the whole time the LED display said "generator warming up". After running for about 3 minutes there generator shut down and the started back up with "warming up" again on display screen.
I was told there is a 7.5 amp in line under control board but I could only find the one located on top of the control module.
Ideas Please??
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BillM
If I recall, the 7.5AMP fuse is the only fuse unless they added the cold weather kit which has an inline fuse but that's not a factor from an operational standpoint to troubleshoot what you have going on there.  I checked the install and owner manual for model 6551, a 22kW Guardian air cooled.  It only lists the 7.5amp fuse at the control panel if we're still talking generator side fuses.
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grsthegreat
ive had several calls for lightning strikes. All but one were fixed by unhooking all wires to controller and rebooting the system. Generac lists the order on which wire to plug in ...but i dont recall what it is. id have to look it up. Its in a service bulletin on gen service. The one unit that this procedure did not work on had a dead controller, dead magnetos, dead battery ( 0.0 volts) and dead gas solenoid. after replacint these....one after the other with tests in between...i got it up and running.
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BillM
Mine lost magneto's and the controller from a nearby strike.
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Kris K Voeks
I would like the info on how to reboot the controller please. I suspect something in that regard because of the display screen and what it reads when I turn the generator to automatic. The scree will read "Pause for start-up" and it displays the number of seconds before it will start up and then it does run. While running the screen then reads "Warming Up". Power never switches over at the transfer switch and within a few minutes generator shuts down and repeats the same start up.
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BillM
Until someone with more knowledge chimes in, I have believed the way to reboot the Evolution controller was to remove the 7.5 amp fuse from the top of it and of course wait a minute or less.
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Geoff Z
I found this. Someone more knowledgeable than I would have to confirm if this sequence would work.
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BillM
Wow, seems like they should have designed something simpler originally.
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Kim Barton kmbartosz
Just replaced one on 22kw pulled all power replaced it repowered it all went well.
Took old one apart was infested with fire ants circuit board was full of ants and eggs and shorted out, who would of thought. 
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Kris K Voeks
Thankyou Geoff Z, I did exactly that procedure except replace the controller and it did not resolve anything, and in fact, the exact same messages and actions of the generator stayed the same which makes me believe the controller is bad. 
My new question is, can I use a evolution controller from a 11kw on the 22kw as long as I have the access code?
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Geoff Z
One of our techs would be better qualified to answer that for us. If I have the serial numbers for both generators I can confirm if the controllers are the same. If so it sure would seem to me it would work. 
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Peddler
No, you will have to use a replacement controller not a factory unit from another generator.  I have tried that in an emergency when I didn't have one on the shelf and they won't work, not sure why.
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ohmslaw
Peddler,
We swap controllers all the time. As long as the controller has been activated  you can use it in any like kind unit.
Tim
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