A/C control module


New member
Buick Ownership
1994 Roadmaster Estate, 1965 Riviera
I’m having a problem with regulating the a/c in my ‘94 Roadmaster and am hoping someone here can offer insight or even a solution. The a/c will only blow at one temp (ice cold thank goodness) but the compressor won’t shut off when I dial in some heat, i.e. set the temp to 72* for example. The only way to get heat is to turn the settings to Vent so that the compressor turns off. I replaced the controller module a few months ago (same reason) with one that was supposedly NOS but the problem has returned.
It’s okay now b/c it still feels like summer but winter is coming...
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