Honeywell RTH4300B Guide D'installation page 22

Installation Guide
Function 14: Temperature display About your new thermostat
Setup
14
Press to change setting.
When finished, press the RUN but-
ton or press and hold both
buttons to exit and save changes
Press the
Celsius temperature display:
0
0 Fahrenheit temperature display (°F)
1 Celsius temperature display (°C)
and
s t
0
button to select Fahrenheit or
t