I have a Wayne Dalton t-stat. I think it is common with some other t-stats as well.
Every once in a while the t-stat changes the temperature setting to a low temperature all by itself. I have programmed it such that if the temp setting goes below a certain point that it notify me of the change. I also have it such that if the requested temp is below 74 that it be set at 74.
I had thought I had some guests that were making the temp request. However, recently I had it make the request when the house was empty, meaning that the system did it by itself. Anyone else experience anything erratic lilke this or know if a solution?