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Old 10-23-2015, 12:54 PM   #1
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Furnace issue.

I am the owner of a 264bh. We went for our first cool weather trip this past weekend and had a problem with our furnace not firing the second night there. Temps got down to 28 degrees. I had one tank full and another about half. Furnace tried to fire a few times and couldn't. The auto changeover valve didn't kick in, so I switched over to the full bottle and reset the furnace. Fired up fine. Coupled next to us also had the same issue and used the same fix. My question is, how do I prevent this from happening again? Can bottles be heated with a magnetic oil pan heater or lines with a heat tape? Not sure how hot an oil pan heater gets. I didn't know if someone makes a kit for this or not.
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Old 10-23-2015, 02:45 PM   #2
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Where you connected to shore power or running off of battery?

It sounds like you were running off of battery, If so, the furnace will not light if the battery is low on voltage. However, I do not know at what voltage it stops lighting at. Typically, you can get one night of run time off of a single Group 24 battery.
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Old 10-23-2015, 03:35 PM   #3
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No. We were on shore line and everything else was working. As I said in the original post, worked fine after full tank was turned on. Camper in the next lot had same issue. He also had a 26 with slideout. I tried to reset the furnace before switching to the full tank and the furnace would try to light a few times. I guess after not lighting a few times the safety would cut in and the furnace stopped trying to light.
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Old 10-23-2015, 04:22 PM   #4
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I had this happen once on our old trailer. I wonder if the issue had anything to do with lack of gas in the line. When there is no gas, like an empty bottle, the furnace will attempt to fire but then shut off. When you switched to the full bottle you restored gas flow. I wonder if it would have failed if the second bottle was low? I know that's an unlikely, and yet I had an empty second bottle in the spring when I know I had it filled last fall.
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Old 10-23-2015, 05:18 PM   #5
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Humm. I run my furnace into the low 20's with no issues.

By chance did you try the furnace reset before flipping tanks? You should be able to run until the tank is empty. If it had been real cold maybe around 0 degree F, you can freeze up the tank by drawing to much fuel compared to the rate it can evaporate, but that would not have the case.

I have had issue with lighting if air is in the line, but as you stated, it had been running.
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Old 10-23-2015, 05:30 PM   #6
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Did you run any other gas appliances before then to make sure the lines were purged? When we setup I always turn the stove on and keep a lighter lit until the air is purged out of the lines and we have gas... It can take up to almost 5 minutes sometimes. Also on the auto change over valve??? Did this come standard on your unit. I have a 2013 and mine is not an auto change over.. I just turn on both valves when I get to the campsite and the tanks bleed out evenly.
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Old 10-23-2015, 06:03 PM   #7
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This was our second night and had been using other appliances. Lines should have been purged. I did not try and run the stove to see if it would burn during the furnace issue. The bottle I was using was low, but not out. Probably 1/2 to 1/3 full. Did try to reset the furnace before switching tanks. I figure the cold lowered the flow in the lines coming from the lower tank. Not a big issue for a short trip, but on longer trips in cold weather, could be a pain. The other camper had the same issue and he said his tank was almost empty. Neither of our auto transfer valves had switched. Talked to Dealer service rep and he said he had never known one to cause problems in the cold, but one of his service techs did. Service tech said there was not a fix. Find that hard to believe. Have sent notes to Jayco and Atwood to get there opinion. Is still under warranty.
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Old 10-23-2015, 06:05 PM   #8
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Did come with the auto change over valve. The valve was leaking when we purchased the camper and they had to put another one on for us.
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Old 10-23-2015, 07:44 PM   #9
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Could be a bad pigtail hose going from the cylinder to the regulator. They do go bad, and not allow adequate propane flow. The furnace sucks a lot more propane than other appliances.
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Old 10-23-2015, 07:48 PM   #10
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Setting up an appointment to have it looked at.
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