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Old 03-27-2022, 12:20 PM   #1
Junior Member
Brand: Thor Motor Coach
State: Massachusetts
Posts: 5
THOR #26340
Onan 4000 gas generator

I have a 2021 Thor Gemini 23TW. Having an issue with my generator showing as running on the Rapid Camp display. When I depress the generator icon to turn it off if shows stopping then goes back to running. The generator is not running I hear a noise coming from the generator some kind of pump not sure what it might be. I can start the Generator from both the switch on the generator and from the Rapid Camp. I did notice that when I use the switch on the generator and start and stop the generator it stops the noise goes away for a short period of time then comes back after 30 or so seconds. Does anyone know why the Rapid Camp show running when in fact it is stopped, also the noise coming from the generator? Thanks for any suggestions.

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Old 03-27-2022, 01:00 PM   #2
Senior Member
Brand: Thor Motor Coach
Model: Axis 24.1
State: Connecticut
Posts: 1,554
THOR #20289
I have a similar setup on my 2021 Thor Axis. I think I have used the BMPro (Rapid Camp) once to start the generator. I always use the dash switch or the bedroom switch.

I suspect that what you are hearing is the fuel pump running after the generator stops. That may be caused by a sticking relay that remains connected even when you release the stop switch. Can't tell you where that relay is exactly. It probably is in the generator itself.

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Old 03-28-2022, 01:26 AM   #3
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Brand: Thor Motor Coach
Model: 2016 Hurricane 27K
State: Florida
Posts: 2,852
THOR #1589
Welcome to the forum! You have one good reply so far.

Sorry I can't offer a solution, just a question. Have you tried the generator company website for a troubleshooting guide?
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Old 03-28-2022, 03:59 AM   #4
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Brand: Thor Motor Coach
Model: Vegas 25.6
State: New Mexico
Posts: 4,489
THOR #20220
Bmpro has updates all the them
Email them and they sent me a software package update
LAS CRUCES 2020 Thor Vegas 25.6
Lora & George. 1 Golden Retriever. Happy Campers!! E Biking, Hiking, Tennis, Scuba,Fishing,Cross Country Skiing, Snowshoeing. Retired H.S. Principal, Sr. IT Engineer, Life & Health Insurance Agent
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