Unable to get to car! Sorry for delay. Did what you said pressed the a/c button then Auto,but fan stayed on!. I am assuming that the A/c button is one with the frosted symbol? The fan seems to be on at the same speed all the time,even when the fan blades increase.The only time the fan gets even louder is when I stitch to RECYCLING..When I press the "- " button on the fan the screen goes blank but is still lit, and the fan is still on. I am considering removing the fan fuse for a couple of minutes. Perhaps this will clear the memory? The only thing I did recently, and it should not have affected anything : It was cold one morning [5am], I turned everything on, i.e. demister front and back windows Recycling as well. Any suggestions please?