I have auto focus kick in with two situations: a drop of 5 degrees or after centering on a new object. I noticed last night that auto focus kicked into action as expected after centering, but instead of starting autofocus for temperatures, it created a reminder and paused for focus. I had to trigger autofocus myself. There didnt seem to be any timer running. Was I just being impatient and it would have done it by itself or do need change a setting?
Rob