What is the difference between Comfy mode & Comfy Max?

The purpose of both Comfy mode and Comfy Max is to automatically maintain your desired room temperature. The difference between the two is how they work. For example, in Comfy Mode, you must add the exact AC settings (AC mode, temperature set point, and fan speed) on which you want your AC to operate after the room temperature goes above or falls below the preferred temperature range. 

Whereas in Comfy Max, you just have to add your preferred temperature window, Comfy Max will intelligently operate your AC to maintain the room temperature within the defined temperature range. It also allows you to choose whether you want to keep the fan running for air circulation after your desired room temperature has been achieved.