WTF does Max A/C do?

[101lifts2]

Originally Posted by RedRider2k2

I know this is an old ass thread but...

I've service/repaired a lot of AC systems and I've never seen one like this. Running the compressor 100% will just flood/freeze up the Evaporator.

Yes, that is because he doesn't know wtf he is talking about.

Max A/C is for cabin air recirculation only. Notice when you have a Recirc button, you don't have a Max A/C setting. When you have a Max A/C setting, you don't have a recirc button.

Most compressors nowadays don't cycle anyway. They are either ON or OFF. The pressure control is done with valving in the compressor itself. This is not to say that the engine controller cannot turn OFF the compressore if the high side pressure becomes too high or too low or if you in a W.O.T. scenario.