Check to see if you pressed the "Max AC" button. That sets the temperature to "Lo" , the distribution doors to "Recirculate", and the mode to Auto. It's actually a separate button to temporarily override your normal settings and cool down the cabin as fast as possible. Press this button again, and the settings should go back to what ever they were set to before.I checked the manual. I press auto to turn it off like it says in the manual. Nothing happens.
Mine stays in auto if I change temp. Fan speed will kick it offi think changing any of the parameters takes it out of auto, including the temp or which vents you choose.