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Old 02-09-2015, 11:38 AM   #1
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Fuse blowing

The fuse for my two ceiling lights and one of the fans blows without any thing being on. If I replace the the fuse and everything works and turn all off and go back later the fuse us blown. Might be blowing as a I turn something on. I noticed that usually when I replace that fuse I get a small spark at the fuse. Ground problem? Any ideas? Jim
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Old 02-09-2015, 01:05 PM   #2
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Hi Jim,

IF you are getting a spark with everything off, there either something else on that circuit or you have a pinched wire somewhere. Have you worked on anything lately? Maybe the fan wiring is crushed where it goes around the inner skin. Could be worth dropping the inside fan panel to check.

Al
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Old 02-09-2015, 01:34 PM   #3
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Dropped the fan panel already, looks okay. Haven't worked on anything lately. Is there a way to slide the converter out to look at the back. This is on an Avion but the electrics are the same as all the Airstreams I've owned. Gonna go out and doublecheck that nothing else is not operating. Thanks, jim
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Old 02-09-2015, 11:47 PM   #4
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Dont see how it could be the converter. The problem is on the other side of the fuse from the battery and converter. Maybe some insulation on a wire got brittle from heat and age. If you replace the fuse and it works for a while, then something else is on that circuit and when it turns on it blows the fuse.

Outside the box answer....rat or some other critter disturbs damaged wiring when trailer empty and blows the fuse. Maybe pull the light fixtures and check the wiring leading to them. If your trailer is wired like mine the LR fan is tapped into the wiring for the LR light. Maybe the vampire tap has opened up and is randomly shorting to the skin.

Wierd problem!

Al
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Old 02-10-2015, 12:45 AM   #5
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How old are the switches? They can get old and be shorting. Been there
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Old 02-10-2015, 06:15 AM   #6
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The fan is original 1984. Looks like sometime someone worked on the switch, electrical tape that I don't think us factory. Gonna disconnect fan today and see what happens. Let you know. Jim
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