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Old 06-24-2014, 03:43 PM   #1
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Generator help Please!!!!!!

I am new to the motorhome industry. I have recently bought my first Class C Sun Seeker 3100. My issue is that my generator will not stay running after I plug my power cord to the 30 amp receptacle located in the back. What am I doing wrong? if the cord is not plugged in the generator runs fine. it is a Onan 4000. any help would be great.


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Lufkin Texas
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Old 06-24-2014, 03:48 PM   #2
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Don't know why the genset won't run, but why would you want to run it anyway when plugged in?
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Old 06-24-2014, 03:51 PM   #3
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Don't know why the genset won't run, but why would you want to run it anyway when plugged in?
What he said^^^^. Are we missing something? You ether plug it in, or run the gennie. Not both.
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Old 06-24-2014, 03:55 PM   #4
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Okay so in the rear storage compartment I have the 30 amp power cord. Also I have a 30 amp receptacle. Does the cord have to be plugged into the receptacle to power the RV when the generator is running. sorry for the confusion. how does the power from the generator get to the inside of the RV?
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Old 06-24-2014, 04:03 PM   #5
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Okay so in the rear storage compartment I have the 30 amp power cord. Also I have a 30 amp receptacle. Does the cord have to be plugged into the receptacle to power the RV when the generator is running. sorry for the confusion. how does the power from the generator get to the inside of the RV?
Unless you have something different. The generator is wired right in to the inverter in the RV. When you start the gennie, the camper is automatically running off the gennie. I imagine that it is shutting off automatically, because the inverter is sensing two power sources trying to run the camper, and killing the gennie.
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Old 06-24-2014, 04:15 PM   #6
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How long does it take to for the inverter to power up? I will check today when I get home.

Thanks for your help.
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Old 06-24-2014, 04:20 PM   #7
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It should be ready to go almost immediately. Fire up the gennie, and then see what works.
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Old 06-24-2014, 04:33 PM   #8
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Transfer switch

I'm not too technically savvy, but don't you need a transfer switch for the camper to pull electricity from the genny? Our new FR3 does not have a transfer switch & we have to manually plug the 30 amp cord into the 30 amp receptacle to get power to the camper. It sounds like that is what is happening. However, if the genny stops running when the cord is plugged in to the receptacle, I don't have a clue. Sorry!
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Old 06-24-2014, 04:35 PM   #9
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Originally Posted by Lufkin View Post
I am new to the motorhome industry. I have recently bought my first Class C Sun Seeker 3100. My issue is that my generator will not stay running after I plug my power cord to the 30 amp receptacle located in the back. What am I doing wrong? if the cord is not plugged in the generator runs fine. it is a Onan 4000. any help would be great.


Thanks,
Lufkin Texas
If the recep came with the unit, you are doing right to plug the gen set into that recep. One problem however, if you have 28-more a/c amps load turned on, the generator is tripping from overload. Otherwise you have a wiring problem or possibly a governor problem on the engine, won't accept load. Last choice is a weak fuel pump and will not step up when loaded. Onan had a lot of problems in the last year or two with weak fuel pumps.
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Old 06-24-2014, 04:43 PM   #10
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I'm not too technically savvy, but don't you need a transfer switch for the camper to pull electricity from the genny? Our new FR3 does not have a transfer switch & we have to manually plug the 30 amp cord into the 30 amp receptacle to get power to the camper. It sounds like that is what is happening. However, if the genny stops running when the cord is plugged in to the receptacle, I don't have a clue. Sorry!
My last camper with an onboard gennie, was a 95 Jayco Class C. I didn't have to do anything, but start the gennie from the switch that was by the range hood. If they have changed things, then I'm not aware of how they are set up nowadays. Having to run a cord, from an onboard gennie to a receptacle to make it work, would seem to indicate technology has gone backwards, or they have cheapened the way they do things. Certainly possible.
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