Atwood Hydro Flame Thermostat Question

Discussion in 'Heating / Cooling Systems' started by Jhunt012, Sep 19, 2015.

  1. Jhunt012

    Jhunt012 Member

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    Can someone tell me how to actually adjust this thermostat? Am I missing something? The "off" lever does not move either.

    Am I missing something? This is the thermostat on my new to me Fleetwood Cheyenne. There is a slider on the bottom that I assume controls some type of fan speed? But I don't see how to actually change the thermostat. The small lever on the top right says "off" but I can't move it at all. Any advice would be great! Thanks!
     
  2. kitphantom

    kitphantom Well-Known Member

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    Many original thermostats have on/off switches that are almost impossible to move. I sometime used a spoon or something on ours, and it almost seemed that I was in danger of breaking the lever right off. That's just one of the reasons we changed it out for a digital one.
     
  3. jnc

    jnc Welcome from New Hampshire

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    Throw out that old thermostat and replace it with a cheap battery powered digital Thermostat.
     
  4. Hoosier Daddy

    Hoosier Daddy Active Member

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    The switch on the top is the on off switch. to the right is off, but even with the lever pusshed to the left "on" position it still angles slightly right. and yes they can be difficult to move. try moving it both ways, it may already be "on" but you may have another issue preventing the unit from actually running.You can pop off the cover and see the inner workings and know what position it is actually in
    The lever on the bottom is the temperature control, not fan speed. The blower fan on has one speed. Moving it to the right increases temperature when the furnace cycles off.

    [​IMG]
     
  5. Jhunt012

    Jhunt012 Member

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    This is very helpful. Thank You. In the diagram you posted there is a part of the thermostat that has a temperature reading. Is that the current temperature, or does moving the bottom slider supposed to change that to the temperature you want the furnace to warm to?

    This is where I'm confused - on mine, moving the bottom slider does not adjust any temperature setting. Does this mean you can't set it to a certain temp. but instead you just sort of estimate how much heat you want it to put out to get to a comfortable temperature? At some point you will actually have to physically turn the switch "off" if you want it to stop blowing warm air?

    I've not even turned my furnace on yet - I just got my camper last week but I'm going through everything trying to understand it all. This portal has been EXTREMELY helpful. Thanks for your time.
     
  6. Hoosier Daddy

    Hoosier Daddy Active Member

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    Yes, The "display" along the top is an actual thermometer. It shows the current temp inside the camper.

    No, the bottom slider just changes the temperature set-point. It will not be reflected above until the temp inside warms up and actually raises the thermometer's reading.

    Yes. By moving the bottom slide to the right increases the temp. It is not displayed as "72 degree setting" like a digital unit but rather adjusted to where the furnace comes on when you are low and shuts off when at the desired warmth. It's not exact , it's a "range" of a few degrees by "feel" and what's shown on the thermometer.

    No, with the on-off switch at the top turned "on" the furnace blower will cycle on and off automatically to maintain a temp within a close range to where you have the bottom slide selected.
    In the "off" position it turns off the control power to the furnace and it will not run at all, regardless of the temp.

    Now, the furnace blower will first blow air for a few seconds (10-20) and then the burner flame will ignite, this is normal. The furnace blows air to purge the system before lighting the actual flame. When standing outside you will hear the blower fan start, then a series of "click-click-click". (that's the igniter lighting the flame)... then you will hear the flame light with a slight "Woof" and then it's actually heating. The sound changes slightly "deeper" as the burner is running. Also you will feel hot exhaust coming from the out side grill of the furnace.
     

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