I have a the single-zone manual climate control (XL trim) and either I'm not educated on how to operate it or I have discovered a defect.
To give some background on what the controls look like, for you guys with the fancy dual-zone systems:
The temperature control knob goes from 100% heat (completely clockwise) to 100% cool (completely counter-clockwise). Just past the 100% cool position, it says "MAX A/C". If you rotate the knob to this position, it is a momentary switch and the knob springs back to 100% cool as soon as you let go. There is an LED above the label "MAX A/C" to indicate whether MAX A/C is on or not.
Seems super simple. But it only works about 20% of the time. The rest of the time nothing happens when I rotate to the MAX A/C position. Am I supposed to hold it there, NOT hold it there, or some other criteria that the computer decides whether it wants to turn on MAX A/C? I see nothing in the owner's manual about this, so I'm assuming the system should be as simple as it appears. I might have to make a video to show what I mean.