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BengalBus's avatar
BengalBus
Explorer II
Dec 05, 2024

SF42 Furnace Running - will Heat for a few minutes then cold

Our furnace is running/blowing- will blow hot air for a few minutes then turns to cold air.  Propane is working - can light stove burners no issue.  Bypassed sail switch and same issue.  Anyone exper...
BengalBus's avatar
BengalBus
Explorer II
Dec 06, 2024

UPDATE- we are headed to an RV store next Province over to pick up new thermocoupler and Control Board- we think it's the coupler now- but if it's not it would have to be the board- so I may have a control board for sale as they won't accept electronic returns!  I appreciate ALL of your responses and will keep you tuned into whether we are successful!

StirCrazy's avatar
StirCrazy
Moderator
Dec 07, 2024

how old is the furnace?  might be worth just replacing them both or keeping the control board as a back up.

  • BengalBus's avatar
    BengalBus
    Explorer II
    Dec 07, 2024

    It's a 2009 Triple E INvitation Class A- so it would be 15 years old- yes we'll likely keep the board as a back up!  

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