What are the available fan speed options and how do I select them?

Press the FAN button to cycle through available fan speeds. Options include: Auto Mode (fan speed automatically selected based on temperature difference), and Low, Medium, and High fan speeds (indicated by 1 to 3 vertical dots). After reaching the highest speed, pressing FAN again returns you to the beginning of the cycle. Auto mode allows the thermostat to automatically control fan speed to achieve the set temperature. (Page 20)