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I know the ecobee3 is all the rage right now but there are some of us still using the Smart thermostat.
My tstat is currently on firmware version 18.104.22.1685 according to the "about" page on the web portal.
I'm seeing this incorrect Smart Recovery behaviour on mine and I'm hoping it's been fixed in later releases (as I believe I'm not on the latest release for some reason):
If the outside temperature is below the HP min cutoff temp, the heatpump obviously won't be used for Smart Recovery but while it waits for the right time to fire up the Aux heat for recovery, the outside temp goes just above the HP cutoff temp so now it doesn't do Aux heat recovery and doesn't even attempt HP recovery either (for which it couldn't meet the setpoint in time anyway).
I am hoping a later release knows to use Aux recovery even if outside temps are above the HP cutoff point.
Does anybody else have similar problems or am I the only one? I am tempted to write myself a "watchdog" script that will monitor inside temps as it gets closer to climate change and would decide to create an event to increase the set temp in order to at least get the house close to the set temp by the next climate change (instead of waking up to a house that is several degrees too cold because the Smart Recovery algorithm doesn't consider this situation).
Addendum: I'm putting the finishing touches to my new "watchdog" script and will publish it on my github page once it works OK, if anybody is interested; which I doubt.