Talk to someone who grew up in Vermont and someone else who grew up in Florida, and it quickly becomes clear that people have different tolerances for how hot or cold they like their home to be.

If you don't already have an Ecobee account, start by downloading the Android or iOS app on your phone and setting up an account. 2. Choose 'Add a device' from the home screen Select "Add a device" ...

If you swapped the suspect 2-wire non-programmable with the known good 2-wire programmable from the bathroom and it works properly, there is no other conclusion. The 2-wire non-programmable is broken.