Max Cool Position Function
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
When the MAX A/C button is pressed, the HVAC control unit will automatically select the recirculation mode and turn the A/C on.