Furnace doesn't start - Page 2 - Fiberglass RV

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Old 10-12-2009, 02:30 PM   #15
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Name: Ken
Trailer: 1989 Bigfoot
British Columbia
Posts: 229
Mszabo, thanks for the tips. I know on hot water heaters and and home furnaces there's a thermocouple that senses the burner/pilot is lit, and if there is no flame it cuts out the gas. That's where I wasn't sure if the hydro flame furnace had a thermocouple or not. Are you saying the igniter and thermocouple are combined into the same unit? I'll try cleaning it as you suggest, thanks again!
Hi there It sounds like could be the sense mode on the dsi broad is no good. You should be able to get it out with little trouble and get it tested at the R>V shop to make sure . Hope this helps

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Old 10-13-2009, 01:23 AM   #16
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Trailer: 2000 Burro 17 ft / 2001 Toyota Tundra V8 2wd
Posts: 322
Success at last!

I removed every possible connection (most were spade type terminals) squirted each with WD-40, and worked the connections in and out a couple times. Then I removed the igniter and sanded the tips and reinstalled. Furnace fires right up now and stays lit. I'm able to turn it on and off consistently using the thermostat, heats up the trailer to an uncomfortable level in just a couple minutes.

Thanks to all for your advice, especially Mszabo for your tip about cleaning the connections and igniter. To those keeping track, the other things I had to do was run another wire to a known good ground. I also saw the positive connection to furnace had a loose crimp, I cut that off and soldered and heat shrinked the wires together.

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Old 10-13-2009, 01:22 PM   #17
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Name: Mike
Trailer: 1986 Bigfoot FT20
Posts: 728
Doesn't is feel good to figure it out and, gain some knowledge along the way.
You may need to adjust your thermostat next, I'm sure there is an article somewhere on how to do that.
Good Job,
Mike S

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