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AC only blowing heat
A month ago I noticed day-by-day my AC was blowing warmer and warmer air. I took my car to a small mechanic shop and I was told all the AC major components were working fine (compressor, belt, condenser, etc), however it would only blow heat even when the dial was on coldest setting. It doesn't even blow outside air- just heat. I didn't have time to leave my car with the mechanic since he said I'd have to leave it for a few days for him to fully diagnose it.
I've been told by a couple people it's probably a problem with the AC control unit ... Has anyone else had or heard of this issue before?
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