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Old 05-23-2005, 05:26 PM   #1
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I just started blowing fuses on my 3600 LP generac genny. it was running fine then started blowing fuses as soon as I try starting. it doesn't matter which switch I use. As soon as I flip the switch the fuse pops. Any help? Suggestions. Are wellcome. Scotty.
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Old 05-23-2005, 05:26 PM   #2
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I just started blowing fuses on my 3600 LP generac genny. it was running fine then started blowing fuses as soon as I try starting. it doesn't matter which switch I use. As soon as I flip the switch the fuse pops. Any help? Suggestions. Are wellcome. Scotty.
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Old 05-24-2005, 11:18 AM   #3
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I'm a little confused. Do the fuses blow when you try to start the generator? Or does the generator start and run fine, and then you blow a fuse when you try to turn on something that uses power?
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Old 05-24-2005, 04:39 PM   #4
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Fuse blows as soon as I toggle the switch.gen doesn't even try to start.
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Old 05-25-2005, 01:10 AM   #5
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Have you seperated the lowvoltage remote switch wiring and tried it? If so does it still blow a fuse? If so then I think you have a bad control board on the genny. If not locate and repair remote wiring will correct the problem.
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Old 05-25-2005, 03:36 PM   #6
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I have not tried that yet. Will do so as soon as the rain lets up. Thank you.
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Old 05-31-2005, 06:51 PM   #7
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Took switch out of cercut still blows fuse, must be board.
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Old 06-15-2005, 11:50 PM   #8
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About two years ago I had exactly the same problem but with an onan generator (in Bigfoot truck camper). I would blow fuses immediately when trying to start the gen. After a great effort to remove the gen and then taking it to our local onan service, the service person said there was absolutely no problem with the generater...it started immediately in the shop.

Trace the problem to that rocker switched in the stove vent. I did not replace the switch as the wiring was too complicated to trace etc. I put in a factory onan switch, mounted it in a convenient location inside the camper. I had to get a factory wiring harness that connected directly to the onan extern starting swithc...you will probably have to do the same if your problem is the same as ours was.

We have had no problems since we made this modification...used the generator extensively during last year's FL hurricanes. IVER
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Old 06-17-2005, 07:36 AM   #9
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What fuse is blowing? Does it solely provide power for the generator starter motor? Or a starter solenoid? A defective (shorted) starter or defective solenoid seems like a possibility. You could try eliminating both the remote and the generator-mounted start switch and just jumper the to the solenoid terminal and see if it turns over. Make sure the jumer wire is fused, though!
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Old 06-20-2005, 04:33 PM   #10
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The 7.5 fuse on the front of the unit. The gen will try to start if I jump the solinoid so it is not the starter. The main breakers don't trip and no other fuses are blowing in the camper.
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Old 06-24-2005, 07:26 AM   #11
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That was my problem too...that 7.5 amp fuse blowing...the one on the gen. I replaced the small rocker on/off switch on the stove hood with a regular ownan switch:

http://duedall.fit.edu/yellow/gen_step_6.htm

Problem solved, Iver "Hemi"
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Old 06-24-2005, 11:52 AM   #12
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I will check it out. It would be nice if that is all it was.
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Old 06-24-2005, 04:47 PM   #13
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FXRSCOTTY, let me add that getting the onan out of the generate compartment was a serious and major task. After it was out I was able to connect new onan wiring harness/switch directly to onan geneerator to fire it up from the switch which I later installed inside the camper. Bigfoot had spliced its starter wiring system to the onan wiring loom. I cut off the wire with some dikes, folder over and taped and then installed a regular onan wiring loom...it all came in a nice package....these camper mfg (speaking of Bigfoot now) think they are doing a favor by installing an aftermarket switch on the hood fan. When there is a problem it is almost impossible to sort out the wiring. IVER D
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Old 07-11-2005, 02:53 PM   #14
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F.Y.I. there was a bad ground inside of the generator itself causing the fuses to blow. The bolt to the ground wire was stripped out and had work loose with vibration. thanks to all who responded. scotty
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