Thermostat Changing Temperature by Itself?

[poohs_hunny]

I have a non-programmable thermostat that's been in for about 4 years, and I've never had problems with it. This morning when I woke up, I turned the temp up a bit because I was cold. Then I turned it back down to 66 before leaving for work.

I just got home and I noticed it felt warm. I looked at the thermostat and it said 72. So I thought, how did it get to 72 on a cold day? Then I checked the set temp and it was set to 72! Huh? At first I thought I must have turned the temp up instead of down this morning. But then I was thinking that if that was the case, it only would have been set to 70, not 72 (since it had been at 68 when I adjusted it). Also, the heat was not running when I left for work - I would have noticed it getting very warm during breakfast, getting ready, etc. if it had been. I live by myself, so no one else could have touched it.

So what can cause a thermostat to change temperature on its own?

 

[Icemann]

Try changing the battery in it

 

[poohs_hunny]

Try changing the battery in it

I thought of that, but last time it needed a new battery, a code showed up on the screen. I guess I'll see if it happens again, and if it does, I'll try that. Thanks!

 

[DaisyLynn]

It's probably a ghost.





(I'm sorry that I didn't have a serious answer for you...I really have no idea!)

 

[poohs_hunny]

It's probably a ghost.





(I'm sorry that I didn't have a serious answer for you...I really have no idea!)

And a cold one, apparently!

 

[AKL_Megs]

It's probably the battery or it's bad. You can get a good non-programmable one for under $20.

Ours went bad, did the same thing. We have a programmable one now... I like it better!

 

[Gigi22]

Your thermostat may have packed it in and need to be replaced. We had a programmable thermostat with a battery power backup in it, and the darn thing packed it in one day--would not turn the furnace on.

 

[3boymthr]

DH is in HVAC. He says if it's digital and changing temperature on it's own then it has gone bad and needs to be replaced. Even if it's not digital it may have gone bad - but be careful the non-digital thermostats have a glass bulb in them filled with mercury and if the mercury bubble has cracked you could have a mess on your hands.