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Old 11-13-2018, 11:17 AM   #1
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Freezing and furnace problems

Stuck in Texas and itís dropped into the upper 20ís here. My furnace quit working last night. When I started it again, the blower came on but it never fired up.
I took the cover off outside and found the reset switch. I clicked it and the furnace started making short quick blasts then fired up just fine.
That lasted about 5 mins then it shut off. After a couple mins the blower started again but not fire.
Iím going to try reset again but thereís something going on here that makes that only a temp fix.
Ideas?
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Old 11-13-2018, 11:20 AM   #2
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Stuck in Texas and itís dropped into the upper 20ís here. My furnace quit working last night. When I started it again, the blower came on but it never fired up.
I took the cover off outside and found the reset switch. I clicked it and the furnace started making short quick blasts then fired up just fine.
That lasted about 5 mins then it shut off. After a couple mins the blower started again but not fire.
Iím going to try reset again but thereís something going on here that makes that only a temp fix.
Ideas?

Sounds like gas flow issues . at 20 propane will not flow as well . the furnace will try and fire 3 times then lock out . . make sure bottles are full
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Old 11-13-2018, 11:24 AM   #3
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Sounds like gas flow issues . at 20 propane will not flow as well . the furnace will try and fire 3 times then lock out . . make sure bottles are full


Propane is good enough to fire up the burners on the stove, hot water heater seems to be firing good too
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Old 11-13-2018, 11:26 AM   #4
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What brand of furnace?
I am having issues with my Atwood here in soggy TN. Pulled the control board last night... It was wet and had some surface corrosion on the back side. Dried everything off, cleaned the board and back in business for now. Need to order a new Dinosaur board for it.

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Old 11-13-2018, 11:39 AM   #5
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What brand of furnace?
I am having issues with my Atwood here in soggy TN. Pulled the control board last night... It was wet and had some surface corrosion on the back side. Dried everything off, cleaned the board and back in business for now. Need to order a new Dinosaur board for it.

Aaron


My rig is a 2018 and I just had to replace the circuit board on the water heater.
I tried the reset button again and it didnít work this time.
Fortunately, a local mobile repair guy had an opening this afternoon.
Brand new motorhomes shouldnít have all these problems!
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Old 11-13-2018, 11:48 AM   #6
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what code does the board give you? Should be a flashing red light, count the flashes and look it up.
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Old 11-13-2018, 11:53 AM   #7
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Propane is good enough to fire up the burners on the stove, hot water heater seems to be firing good too
furnace takes a lot more flow ! may try cleaning the burner and flame sensor .
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Old 11-13-2018, 12:50 PM   #8
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You dont say if you're on shore power or battery. A low battery is one cause for this.
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Old 11-13-2018, 01:28 PM   #9
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furnace takes a lot more flow ! may try cleaning the burner and flame sensor .


My money is also on low propane flow. Check out this article on propane vaporization characteristics. The short version is that propane doesnít vaporize as well at lower tank temperatures.

https://www.elgas.com.au/blog/1948-h...g-vaporisation

Also, is there a chance that the fuel in the tank came from a warmer region? Propane from southern states, especially in warm weather seasons, is often blended with butane which has a much higher boiling point. I carry a butane soldering iron in my service van that just flat wonít ignite below 60 degrees.
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Old 11-13-2018, 02:05 PM   #10
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My money is also on low propane flow. Check out this article on propane vaporization characteristics. The short version is that propane doesnít vaporize as well at lower tank temperatures.

https://www.elgas.com.au/blog/1948-h...g-vaporisation

Also, is there a chance that the fuel in the tank came from a warmer region? Propane from southern states, especially in warm weather seasons, is often blended with butane which has a much higher boiling point. I carry a butane soldering iron in my service van that just flat wonít ignite below 60 degrees.
This^^^^^^^ Betting your issue is temp related. Please post up how this gets resolved as it helps others....
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