Guardian by Generac RV Impact-36 plus ll with inverter

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LanceCamperGuy
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1997 Model 00941-4 LP powered, runs fine until the line breaker is turned on and then it runs for about 10-20 seconds and stops. I’ve tried isolating it from the camper inverter and it still shuts off when the line breaker is turned on. I’ve replaced the breaker, oil is fine. I’ve flashed it with a drill after which it will run the drill for a short while but there is not enough output to light a lightbulb. The generator worked fine a few months ago but will not put out power now. The unit only has 31 hours on it. Helpful suggestions anybody?
Chris
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I think that turning on the breaker may just be coincidence. If the unit doesn't produce power, the shutdown is likely a result of that instead. Will it run forever if the breaker is left off?
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LanceCamperGuy
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Thanks for the question. Yes the unit will run forever if the breaker is in the off position. It will also run forever with the black and red wires removed from the breaker on the line side, and it is a new breaker, so I know the breaker itself is not the cause.
Chris
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And the unit is producing power?
Generac tech for over 12 years. I'm here to help!
"The only source of knowledge is experience" -Albert Einstein
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LanceCamperGuy
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No, it is not producing enough to light a lightbulb even. I believe it is an internal problem with the generator. Thanks
Chris
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I don't know these units very well, but I suspect that as you said, there's a problem with the generator's voltage regulation system in some way. By adding the load of the coach to the unit, it's probably dropping the voltage to zero, sensing that, and shutting down.

There is a pretty nice diagnostic manual available for it here: https://shop.gentekpower.com/products/g ... air-manual
Generac tech for over 12 years. I'm here to help!
"The only source of knowledge is experience" -Albert Einstein
Looking for Generac parts? Gentek Power offers the full line of Generac replacement parts! Shop Gentek Power Generac Parts
A list of my favorite Generator & Electrical Tools! https://www.amazon.com/shop/gentek_power
LanceCamperGuy
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Thanks,

I did a lot of testing today and discovered the inverter is bad. Now if I can only find a replacement. the original part number in the owners manual is: 0D4885 On the inverter circuit board it says inverter assembly # 0D6105 REV A , Generac Power Systems. Any ideas for finding an identical replacement?
Chris
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Unfortunately, both the inverter and adapter harness for the 'newer style' show as obsolete. :sad:

This is something that either someone will have to make an attempt to repair, or maybe someone has one laying around in a older unit or something.
Generac tech for over 12 years. I'm here to help!
"The only source of knowledge is experience" -Albert Einstein
Looking for Generac parts? Gentek Power offers the full line of Generac replacement parts! Shop Gentek Power Generac Parts
A list of my favorite Generator & Electrical Tools! https://www.amazon.com/shop/gentek_power
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