Press the up and down arrows simultaneously for three seconds to get into the set up menu. The first menu item is the C or F mode. Use the up or down arrow to change it. Then when you have that to F press both buttons again simultaneously briefly and the next menu item is the 12-24 format. Use up or down to change that to 12hr.. Follow the prompts to select either "Fahrenheit" or "Celsius" and then touch DONE. Honeywell T1 Pro. To change the temperature display on a T1Pro Honeywell thermostat, press and hold the button (MENU) until the "advanced" menu appears. Use the NEXT button to scroll to option 125, then use the EDIT button to scroll between "Fahrenheit" and.
![[DIAGRAM] Diagram Of A Thermostat](https://i.ytimg.com/vi/mkfd0RjgVW4/maxresdefault.jpg "[DIAGRAM] Diagram Of A Thermostat")
To change the temperature display from Fahrenheit to Celsius (or Celsius to Fahrenheit), please follow these instructions, depending on your thermostat family model. 1000 to 6000 family models You can change the temperature display by accessing function 14 in the system settings and switching to 1 or 0.. In this video I show you how to change between Fahrenheit and Celsius on the Honeywell Pro Series Thermostat. I take you through how to change between Fahren.