To switch your FB controller to a cooling versus warming device you will need to do these two steps:
1. Lower the Min Set Temp to 35
2. Change Direction from Output Warms to Output Cools
Here are the details for each one:
1. Press and hold "Menu" and "Up" buttons at same time until it beeps to enter the controller's advanced menu
Select Temp & Blower with "Down" button and enter the menu item with "Menu" button
Lower Min Set Temp to say 35 with "Down" button and press "Menu" button again
Press "Menu" until you get back to the default screen
2.. Enter advanced menu again (press and hold "Menu" and "Up" buttons at same time until beep) press "Down" button to select PID
Press Menu until you see Direction
Press Down to change it to Output Cools
Press Menu again to get back to default screen.
With this method you can leave the Min Set Temp low and only change the Direction when you want to switch between warming and cooling.