Thermostat scheduler setting thermostats to 1-2 degrees over desired set point

[simon4]

The highest I have scheduler set the heat is 71. However the thermostats routinely are set to 1-2 degrees over the desired set point. I thought at first that it was happening when I returned to the house - it is in eco mode when I am away and then is told to resume schedules when we return. But it does seem to happen at other times.

Does this have something to do with the hysteresis being set to 2 degrees?

Here is an example:

and the thermostat:

and the logs:

I am a little confused, and a little over heated.

[Guffman]

The firmware update subsequent to my posting apparently fixed the issue in the Thermostat Controller app.

[simon4]

Are you talking about firmware on the Ecobees? I have three thermostats, two different models, and firmware is versions for two are 4.8.7.514 and the third 4.8.7.132. Updates are automatic so I apparently don't have any control over that.

See my next post. I think I may have figured it out thanks to the call out by @Tree.Log to the control offset.

[simon4]

Control Offset does look like the culprit. I found this thread now:

Thermostat Controller Settings

Hi all, I had a quick questions/clarification on two of the thermostat controller setting. I am trying to understand the difference between "Hysteresis" and "Control Offset". I think I understand it but not totally sure. So if my thermostat is set to 70 degrees and the temperature drops to 65.5 then the Hysteresis setting will cause the furnace to kick on. From there the Control offset will refer to the heat setpoint(70 degrees) and tell the furnace to turn off when it reaches that degree offse…

And this thread:

Thermostat Controller I can't change the "Control Offset"

Thank you. I didn't fully understand the operation. Now I have to think if this is how I what it to want.

It looked at the documentation originally and it doesn't mention any of this. It would be helpful if the apps had tooltips on each field - that would have saved a lot of my time.

Thanks to everyone for helping me sort this out. Thanks.