88 2M4 w/AC
I just replaced my HVAC control unit. Was working fine but 2 of the button [covers] popped off, lost one.
When you turn the A/C on, the cooling fan comes on which is normal. When you turn on the defrosters, the A/C compressor kicks on which again is also normal. I can't remember if the cooling fan is supposed to come on as well during this [defrost] cycle. Reason asking, because mine doesn't.