Forum Discussion

jarata1's avatar
jarata1
Explorer
Apr 22, 2017

Furnace blower goes on

I have my travel trailer plugged in in the driveway what I noticed is the blower for furnace is going on.I moved the thermostat to lowest setting, and being a pilot has to be lit it isn't blowing hot air just air.Shouldnt there be a switch somewhere to turn it off I cant find it anywhere
  • ScottG's avatar
    ScottG
    Nomad
    Apr 22, 2017
    Make sure the "Fan" switch is set to "Auto" and NOT "On".
  • ScottG's avatar
    ScottG
    Nomad
    Apr 22, 2017
    jarata1 wrote:
    where is the fan switch I looked everywhere for a switch


    It's on the thermostat.
  • Fulltimer50's avatar
    Fulltimer50
    Explorer
    Apr 22, 2017
    The "FAN" switch on the thermostat is for the A/C fan. The furnace fan is not controllable. How old is your furnace that has a pilot lite??
  • ScottG's avatar
    ScottG
    Nomad
    Apr 22, 2017
    Fulltimer50 wrote:
    The "FAN" switch on the thermostat is for the A/C fan. The furnace fan is not controllable. How old is your furnace that has a pilot lite??


    It depends on how it's wired George.
    I've seen this very scenario on here before.
  • prichardson's avatar
    prichardson
    Explorer
    Apr 23, 2017
    If it has a pilot it sounds like an older system that is heat only. If the air temperature is above the thermostat setting and the furnace is trying to run there is probably a short in the control wiring.
  • bikendan's avatar
    bikendan
    Explorer
    Apr 23, 2017
    It would if we knew year/make/model of RV, since the OP doesn't list on the sign line.

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