RTH221 Datasheet (Honeywell) - Programmable Thermostat User Guide

RTH221, Programmable Thermostat User Guide

 Operation 1.1 Controls Press to set clock or schedule Press to override schedule and hold temperature Press to run (follow) programmed schedule 1.

Fan switch System switch Temperature adjustment buttons 1.2 Display screen Setpoint indicator Appears when the setpoint temperature is displayed.

Low-battery warning Permanent schedule override Schedule period Clock Temporary schedule override Temperature System status Cool On: Cooling is activated.

1 Heat On: Heating is acti