The output from my aircon is stuck on the windscreen vents - the position when heating/defrosting the windscreen. It is able to blow hot or cold and the air speed control works fine on auto or manual, but deselecting windscreen heating and/or selecting other output vents (footwell, passenger etc) does nothing to change the vents with airflow. Could this be something like a stuck vent that can be freed relatively easily, or might it be a dead vent selector motor?

Have you tried a re-callibration?:

 

 

Gaz

That sorted it! Thanks a lot, I had visions of huge dealer garage bills for pulling the dash out to fix it. Thanks for your help, I appreciate it.