richscriv

Hi I have a 87 911 Targa with automatic heating, it has no levers in the center between the seats, just the heating control unit with the dial that goes to 9. I have no heating in the car whatsoever, I have remember l removed to m the control unit to inspect and see no defects, the control arm is connected, all cables under the vehicle are connected. When I operate the dial on the control unit the little arm doesn't move, is there and tests I can carry out? Cheers