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Old 11-23-2015, 08:48 PM   #11
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Don't think it was a flame, no scorch marks on anything but the brown wire. It could have just had a bare spot or shorted against the cover and burned the insulation before it blew a fuse.
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Old 11-23-2015, 08:55 PM   #12
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Did you by chance turn off the propane before you turned off the WH ( when on propane). That could cause a low pressure and the mixing tube to allow a flame come through the air mixture intake.
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Old 11-23-2015, 08:59 PM   #13
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Don't think it was a flame, no scorch marks on anything but the brown wire. It could have just had a bare spot or shorted against the cover and burned the insulation before it blew a fuse.

Did you look at the melted cover just above the burner? Very melted. It doesn't look like a short to be at all.
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Old 11-23-2015, 09:00 PM   #14
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Old 11-23-2015, 09:39 PM   #15
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Still say it was flame roll out, Only thing that stopped it was the wire melting. Low propane will not cause that. Either some bug got into the tube or you had a direct wind against it. Just a freak thing happened. Pull it apart and clean your tube and stick a small wire in the orifice. Take some soapy water and spray for leaks also.
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Old 11-24-2015, 10:50 AM   #16
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There's also a scorched place on the cover directly behind the venturi tube. I think it was flame rollout also.
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Old 11-24-2015, 11:24 AM   #17
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Exactly you can see where the flame went up to the wire and onto the upper cover as well.
Very lucky it didn't burn down. I think I would want a very thorough inspection of the WH before I would be able to sleep in it.
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Old 11-24-2015, 01:34 PM   #18
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This is the first time I've had the outside cover off the Motorhome... it was just to winterize it and drain the water heater. The thing still works.
We have camped at the Oregon Coast and it gets wet, and wet and windy....
I can say it was very windy once (80 mph winds) in September but nothing that wild since. We turn off all the switches inside on the panel before we drive the coach.
I have never turned off the propane bottle at the tank. I've only filled it once. I don't think it was caused by anything I've done. I don't believe there are any spiders in the thing but I'm not taking it apart to look either.... The dealer can deal with that.
I'm starting to figure out this Motorhome though... I think it might be a lemon?
The stereo didn't work
The TV quit working,
The Heater stopped working
The back storage compartment leaks
Now this...
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Old 11-24-2015, 02:51 PM   #19
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I don't see an air regulator for gas/air mixture metering. That's critical and probably caused the problem.
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Old 11-24-2015, 03:18 PM   #20
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I don't see an air regulator for gas/air mixture metering. That's critical and probably caused the problem.
This particular WH doesn't have one.
Here's a photo of a new one.
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