When the autotune finishes, Ed, (which can take awhile), the readings in the left window will go back to the "regularly scheduled programming" (lol) - no At flashing, just a temp reading. I attempted an autotune, for the first time, this weekend during an actual smoke....mistake! It can hold a step for a long time to analyze the settings, so it's best to do it with a heat sink, instead of food you can ruin!