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Bigmoss's avatar
Bigmoss
Explorer
Apr 29, 2017

Need some heat help please.

I will try and keep this short but want to give all details in case it is related.

Went and got my Jayco 5er out of storage yesterday. Like an idiot I hooked the battery wrong not paying attention. It blew the reverse polarity fuses in the box which I changed, it blew the fuse behind my Jensen radio and it blew the Digital Coleman thermostat for the furnace.

I changed all the fuses and installed a brand new thermostat I had here still in the package. Everything now work except the furnace. When I put the switch to heat the fan comes on right away like it should but I don't hear the propane trying to lite and after a few seconds the fan just shuts down. The AC portion works just write.

I wired the new stat exactly like the old one.

Propane was just hooked up again I thought maybe air in the line but the stove and hot water tank and fridge are working fine on LP.

Did I miss another fuse to the furnace ignitor ? Does anyone have any other advise on what to look at ?

12 Replies

  • Bigmoss's avatar
    Bigmoss
    Explorer
    Apr 30, 2017
    Yes mine is not like that I only have a 5x5 inch exhaust the whole furnace in mine needs to be removed to get to the boards etc. I am going to wait until the fall to bring it to the dealer as I dont need the furnace this summer
  • mileshuff's avatar
    mileshuff
    Explorer
    Apr 30, 2017
    Bigmoss wrote:
    mileshuff wrote:
    My Atwood furnace has a reset button located behind the metal grill exhaust cover. With it tripped it did exactly as you describe. Fan would blow cold air for a minute or so then shut off. A bad igniter will cause a similar issue.

    There is also a high temp limit (Sail) switch that would cause the OP's issue if bad.


    So your furnace also just had the exhaust vent on the outside no door lower and your saying you took that small square exhaust vent off and there was a reset behind that exhaust ?


    My furnace looks similar to this photo. Removing the cover exposed the wiring with a small inline reset switch.

  • Bigmoss's avatar
    Bigmoss
    Explorer
    Apr 30, 2017
    mileshuff wrote:
    My Atwood furnace has a reset button located behind the metal grill exhaust cover. With it tripped it did exactly as you describe. Fan would blow cold air for a minute or so then shut off. A bad igniter will cause a similar issue.

    There is also a high temp limit (Sail) switch that would cause the OP's issue if bad.


    So your furnace also just had the exhaust vent on the outside no door lower and your saying you took that small square exhaust vent off and there was a reset behind that exhaust ?
  • mileshuff's avatar
    mileshuff
    Explorer
    Apr 30, 2017
    My Atwood furnace has a reset circuit breaker located behind the metal grill exhaust cover. With it tripped it did exactly as you describe. Fan would blow cold air for a minute or so then shut off. A bad igniter will cause a similar issue.

    There is also a high temp limit and Sail switch that would cause the OP's issue if bad.

    Small breaker, limit switch and sail switch are all located behind the grill cover. These are in addition to the main breaker in the trailers power panel.

  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    Apr 29, 2017
    The only reset any of them have is a circuit breaker, and we know it's good, because the blower starts.
    A make and model of the furnace would help.
  • midnightsadie's avatar
    midnightsadie
    Explorer II
    Apr 29, 2017
    if your thinking about taking it to a dealer? call a mobil tech ,there cheaper, I think smarter than the dealers repair men. and faster, they come to you, and you get to watch.
  • Bigmoss's avatar
    Bigmoss
    Explorer
    Apr 29, 2017
    Local RV place said to open the furnace cover form the outside and there should be a reset switch, problem is I only have a small exhaust on the outside the rest is all inside and when I remove the paneling to get to it, it is all sealed and noting to be seen for switches or boards
  • rrupert's avatar
    rrupert
    Explorer
    Apr 29, 2017
    Bigmoss wrote:
    rrupert wrote:
    Is there a reset button on the furnace?


    Not sure I assume I'd have to try and take all the wood paneling off to try
    and get to it. But would it work at all even the fan if it needed a reset ?


    Probably not. Do you have the manual with a troubleshooting section? It's not bad to look there before getting too involved.

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