The fan wont stop running when the furnace is on

[RVChick]

The other evening I reached over to the thermostat to turn it down two degrees, however I accidentally was clicking the on/off button twice, so it went from furnace to off to fan. A little later I wondered why it was still running, and when I looked, it was set to fan and not furnace. No big deal I though, so I clicked it to the furnace setting. Now the fan runs non stop! The furnace still kicks in as needed, however the fan won't stop running (it's the fan that runs in the air conditioner unit on the ceiling).

Does anyone know how to fix this? It will not turn off unless I turn the entire thermostats to off. I tried turning it of for awhile then back on, but when I set it to furnace, the fan on the air conditioner kicks in too.

[TURBS]

Originally Posted by RVChick

The other evening I reached over to the thermostat to turn it down two degrees, however I accidentally was clicking the on/off button twice, so it went from furnace to off to fan. A little later I wondered why it was still running, and when I looked, it was set to fan and not furnace. No big deal I though, so I clicked it to the furnace setting. Now the fan runs non stop! The furnace still kicks in as needed, however the fan won't stop running (it's the fan that runs in the air conditioner unit on the ceiling).

Does anyone know how to fix this? It will not turn off unless I turn the entire thermostats to off. I tried turning it of for awhile then back on, but when I set it to furnace, the fan on the air conditioner kicks in too.

Is fan switch on auto or on?

[DDC]

I did that last year I can't remember exactly how I got it back to the original setting but it was done by playing around with the thermostat, seem to remember going from manual setting to automatic for the fan, good luck I know it can be done.

[RVChick]

Here is a photo of the thermostat. I don't see an auto...

[RVChick]

Clicking the on/off button is what toggles it through to fan, cool, and furnace.

[RVChick]

Oh I found out what you meant! On fan, it was set to low! I changed it to Auto, and now it does not come on when the furnace setting is selected!!

Thank you both for the speedy help!!

[dfskinner]

Never seen a theromstat like that..... we have that simple one that comes with the trialer....

any advantages to changing the theromstat?

[RVChick]

That one came with the toyhauler!

[TURBS]

saweet!

Turbs

[danno2u]

Originally Posted by dfskinner

Never seen a theromstat like that..... we have that simple one that comes with the trialer....

any advantages to changing the theromstat?

At least for now, there's no replacement thermostat for the new 3-wire versions as shown above. If there were, I would have already replaced mine!

[ibjon]

Hit the mode button to fan press the + sign or - sign until the screen reads AU, then hit the mode button till furnace light comes on. At this point you can set your temp.

[RVChick]

Yes that was the cure!!

[cfsoistman]

Originally Posted by dfskinner

Never seen a theromstat like that..... we have that simple one that comes with the trialer....

any advantages to changing the theromstat?

FYI - The new T-stat shown in the picture requires a different control package in the AC Unit. I checked into it and you'll have to buy a new control package as well as the t-stat. Unfortunately it's not just a simple replacement or upgrade.

[dfskinner]

cfsoistman thanks for the info. I'll stick with the one I have, no since in messing with something that aint broke......