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Old 06-23-2016, 08:33 AM   #1
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Furnace issues

I have a 2007 jayflight 31bdhs and during last winter the furnace stopped working during the night. The fan still blew air but it would cycle off and on every few minutes and it would never get hot. Almost like the ignition source wasn't working. We check the stove and hot water heater and it's fine. Any ideas?
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Old 06-23-2016, 10:15 AM   #2
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Where you running on battery or shorepower? If battery, the furnace has a safety feature, at least that is what I call it, that will not allow the solenoid valve to open if the voltage is to low, hence it cannot light.
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Old 06-23-2016, 05:50 PM   #3
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we were hooked up to a 30amp plug in.
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Old 07-09-2016, 01:02 AM   #4
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Where is the furnace located? I would like to see if the igniter is working
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Old 07-09-2016, 04:58 AM   #5
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Either the igniter is broke or it's not getting propane. The typical sequence of operation is that the fan should come on, then shortly thereafter (about 3-5 seconds?) the furnace should light. The circuitry requires a heat source for the propane to continue to flow, so if the electric igniter doesn't fire and light the propane to provide the heat source, then the heater cycles off as a safety measure.

Typically, if the furnace stops working in the middle of the night, that's usually the sign that someone (dad) has to crawl out of bed and switch propane tanks. Doesn't appear to be the case this time around though, if the water heater and stove are getting propane.
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Old 07-09-2016, 05:02 AM   #6
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To answer your question about location, you should be able to tell where it's located by following the sound of the furnace fan running. There's usually a metal grate (typically brown) mounted on the wall or cabinet somewhere that serves as the return air. The furnace will be directly behind it.

If you have never messed with electricity or gas before, I HIGHLY recommend having it looked at by a professional.
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Old 07-09-2016, 07:00 AM   #7
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Troubleshooting RV Furnace Problems
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Old 07-09-2016, 07:55 AM   #8
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Last furnace problem I had was similar, would run but no heat. It turned out it was one of the high limit switches. Was a pain where it was but disassembled until I could get to it to test. It could be several things though. That troubleshooting guide is the place to start.
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Old 07-09-2016, 09:46 AM   #9
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Thanks guys! I will start with the guide.
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