Originally Posted by xi

I understand how the defrost works. Here's another experience of mine that I hope explains it better.

If it's 70 degrees ambient, dry, in the middle of a late summer afternoon, and I have the temperature control set to max temperature (something like 90 degrees) and I turn the fan control dial from off to auto, it will turn the AC on.

So I guess what I'm trying to find out is, if it's a design flaw that you can't turn the auto fan control on without having the ac compressor turn on EVERY time you switch into auto.