Hello, I have a 2008 edge with the cheepy manual environmental controls. About a week ago the temp. control knob for the HVAC stuff stopped working. The fan speed selector works as well as the far right switch that controls the vents the air comes out. I have checked all of the fuses and they seem to be good. I had read about the heater door actuators but that seems to only apply if one side of the car is having an issue, currently may issues is with every vent. I was wondering if anyone had some suggestions of what to look into. Right now it is blowing warm air when fan is on. If I turn on the AC it does condition the air but being that it is stuck on warm the air only cools a little. Here in SoCal we are having a pretty warm winter so the fact that it is stuck on warm is kinda unpleasant. Like I said, any help would be greatly appreciated. Thanks