Heater/AC Blower will not turn off
I have a 2000 Eddie Bauer Explorer it has developed a problem with the heat/AC system. The problem is that the blower/fan is constantly on high. When I turn the automatic system OFF, it keeps blowing on HIGH in the DEFOG mode when nothing at all should happen. When the automatic system is turned on, the system responds to the mode change (i.e. FLOOR, PANEL/FLOOR e.t.c), but I cannot control the blower speed. The rear seat center console blower works fine. Can anyone help?