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Old 02-21-2017, 11:42 AM   #1
Junior Member
Brand: Thor Motor Coach
State: Oklahoma
Posts: 10
THOR #4330
Auto Generator Switch Issue ??

I am having issue with "Magnum Generator" Auto Generator Switch (AGS) in 2016 Hurricane 34F. Can you help?

Onan 5500 generator is installed.

Seems like switch has gone wonky. Generator auto started frequently no matter what position switch. Even if shore power attached or not. I unplugged data cable from switch in RV per Thor tech advisor and then things really went crazy.

Now I can't start generator from with normal generator start switch from inside coach. I can only start generator by turning off 100 amp buss breaker in outside battery compartment then back on. When I flip this breaker, generator automatically starts. Generator runs fine but when I turn it off (switch inside coach does turn it off) I must go outside again and flip 100 amp buss breaker from on to off then back on again to start the generator. Again the generator automatically starts. When I plug data cable back in to with it seems to have no effect at all.

I can turn off generator from inside coach normal switch but this switch will not start generator.

AGM module and remote switch seems a nightmare to replace.

Any ideas? Hopefully a new remote switch (on the way to me) will makes this work but I doubt it.

Any advise I can get is greatly appreciated.
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