Hi
It might be one of the dumbest posts, but i jut had to do it. I can't work out how to get warm/hot air on the inside of my windscreen. The three levers horizonally mounted don't offer any clues and when i turn the right hand circular control to the arrow pointing up, i don't seem to get any air at all coming through. I m wondering whether there is a problem. if someone could put me out of my misery and tell me where those three horizonal levers need to be....

thanks

Mj