Mind of it’s own!
I’ve had an ecobee ultimate for 18 months and had no problems (same schedule, no changes). Recently, when on the “evening” cooling schedule (A/C 75 degrees), it just keeps on running until I manually change the temperature. I’ve let it run a couple of times down to 72 and it would have kept on getting colder. This happens about every other day. If I wait until the “night” schedule time and put it back on schedule, it works fine again. Any ideas?