Hope that one of you guys know a few things in regards to the air conditioning . With the control center adjusted to 60 degrees and the fan on low the vents kick out just hot air. If I put the fan on high then the vents kick out warm-slightly cool air. The unit was recharged recently so where is the problem, in the control head or elsewhere?? The car is 1981 Fleetwood with 6.0. I remember the air being cold but then turning to hot last summer but now no cold whatso ever. Any suggestions.