Advanced Programming Display Codes Chart - Carrier Comfort Touch-n-Go Owner's Manual

Advanced programming display codes chart
You can customize several features of your thermostat. This chart shows which
features you can change and the codes associated with them. The codes will be
shown on the display when you follow the instructions.
Fahrenheit to Celsius U1 F or C
backlighting U2* On or Of
keypad lockout U3 padlock fi
programmable or U4 P or nP
nonprogrammable
number of program U5 4 or 2
periods
* Not available when batteries are installed.