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03-03-2018, 02:44 PM
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#1
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Junior Member
Join Date: Feb 2017
Location: Missouri
Posts: 28
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Jay Flight Furnace ? - This can't be right
I'm using the furnace in the 2018 Jay Flight (27BHS) for the first time and the ceiling vents are blowing cold air also. The furnace kicks on and I can feel the heat from the floor vents, but it's a wind storm from all the ceiling vents with cool air. I've closed all of the vents, but it doesn't block all the cool air and the noise is horrible. Should it be blowing like this from the ceiling with the furnace on?
TIA
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03-03-2018, 02:49 PM
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#2
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Senior Member
Join Date: Sep 2017
Posts: 279
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Ours did this last trip and it turned out to be a leak from one of the propane hoses. Pull the cover and check. You’ll hear and smell it. It also stunk like propane from the exterior vent. Once we switched tanks it worked fine. Probably has something to do with it not having a good flame or the propane bottle is t on.
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03-03-2018, 02:58 PM
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#3
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Junior Member
Join Date: Feb 2017
Location: Missouri
Posts: 28
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Well, the furnace seems to be operating fine. I just didn't think the ceiling vents were suppose to be blowing air also. I thought the furnace was only vented through the floor vents. The air from the floor vents is hot and the air blowing from the ceiling vents is cold???
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03-03-2018, 03:08 PM
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#4
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Senior Member
Join Date: Apr 2012
Location: Just south of Sarnia
Posts: 1,035
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Sounds like the a/c fan is running too. Could be a wiring issue at the thermostat. Do you have thermostat set for heat and auto?
RoadrunnerII
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03-03-2018, 03:14 PM
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#5
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Junior Member
Join Date: Feb 2017
Location: Missouri
Posts: 28
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Thank you! That solved it. It's the digital Dometic thermostat with only an option of "Furnace" for heat, but found I needed to turn the fan to auto first, as you suggested.
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03-03-2018, 03:15 PM
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#6
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Senior Member
Join Date: Apr 2012
Location: Just south of Sarnia
Posts: 1,035
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Glad to help
RoadrunnerII
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Livin the dream... Retired!
TV 2016 F250 Crew Sterling Gray SB 6.7 PS airlift ultimate Air bags
2017 Eagle 321RSTS
Pullrite autoslider
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03-03-2018, 03:28 PM
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#7
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,091
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Yeah it has to be the a.c. fan as the furnace has separate ducting.
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2018 Ford F250 Super Duty 6.2l CCSB
2010 Jayflight 28BHS (sold)
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03-03-2018, 03:36 PM
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#8
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,771
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That's a new one, Never heard of that problem. It sounded like a thermostat problem. Glad it was a easy fix.
We were talking once about running the a/c fan to help distribute air throughout. Glad I didn't try it.
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03-03-2018, 04:11 PM
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#9
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Senior Member
Join Date: Jul 2017
Location: Tucson
Posts: 661
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On the new Dometic you need to have a temperature separation between the cooling and heating setpoint otherwise if set the same temp both fans can potentially run.
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2018 Dodge RAM 2500 / Cummins 6.7 Turbo Diesel
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10-18-2019, 12:03 PM
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#10
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Junior Member
Join Date: Oct 2019
Location: Cincinnati
Posts: 1
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jayco jayflight 2018 furnace to start
Hello,
I can hear my furnace click on but does not work. Propane works everywhere else, fuses all look fine. Hot water works etc. Any ideas?
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10-20-2019, 11:25 PM
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#11
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Site Team
Join Date: Apr 2012
Location: Newark, NY
Posts: 15,762
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Quote:
Originally Posted by JasonBowra
Hello,
I can hear my furnace click on but does not work. Propane works everywhere else, fuses all look fine. Hot water works etc. Any ideas?
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If the furnace hasn't been run for a while, it sometimes takes 3 or 4 cycles until it fires up.
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07-07-2023, 11:33 AM
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#12
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Member
Join Date: Jun 2023
Location: Colfax
Posts: 53
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First timer question... obv...
I know the AC is 110v and requires too much power to try to run on batteries even if i did have an inverter which I don't think i do. If I don't have shore power I'll be hot. Use a 12v fan, or hook up a small generator.
But what about the furnace?
Does it strictly use propane? Does it use any 110v electricity or 12v battery?
Or can I fire it up anytime using just propane?
I know my on demand tankless water heater just requires propane and worked great boondocking around for a few days with water in the tank and no hookups.
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07-07-2023, 11:34 AM
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#13
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 15,948
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Quote:
Originally Posted by Jayco224BHW
First timer question... obv...
I know the AC is 110v and requires too much power to try to run on batteries even if i did have an inverter which I don't think i do. If I don't have shore power I'll be hot. Use a 12v fan, or hook up a small generator.
But what about the furnace?
Does it strictly use propane? Does it use any 110v electricity or 12v battery?
Or can I fire it up anytime using just propane?
I know my on demand tankless water heater just requires propane and worked great boondocking around for a few days with water in the tank and no hookups.
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Furnace needs battery power to run the blower.
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07-07-2023, 11:38 AM
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#14
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Member
Join Date: Jun 2023
Location: Colfax
Posts: 53
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Thanks for the quick reply grumpy
Not anticipating using heat much. But you never know.
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07-07-2023, 12:56 PM
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#15
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Senior Member
Join Date: Jul 2017
Location: Tucson
Posts: 661
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Quote:
Originally Posted by dmh500
Thank you! That solved it. It's the digital Dometic thermostat with only an option of "Furnace" for heat, but found I needed to turn the fan to auto first, as you suggested.
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On Dometic be sure not to overlap your heat/cool set points as this stat allows that. Keep the AC about 4 degrees higher than heat and you should be fine.
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2018 Dodge RAM 2500 / Cummins 6.7 Turbo Diesel
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07-07-2023, 05:47 PM
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#16
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Senior Member
Join Date: Jul 2020
Location: High ridge
Posts: 713
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On my dometic digital thermostat, the ac fan setting needs to be off. Not auto,low, or high. When hooked to shore power.
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