The heat/cooling is mixed by one of the dials where the problem occurs. I had the same issue after I opened it up, tightened the nuts and didn't find the broken wires the first time. When I opened it back up again and looked at the wires from a different angle, I saw the break.
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Originally Posted by roise_r
... meaning, my AC is hot all the time, even when it's off and i am driving fast on the freeway, STILL hot air blows !
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