Quick Reference To Controls - Honeywell RTH3100C Operating Manual

About your new thermostat

Quick reference to controls

Digital display screen
Fan Switch (see page 6)
On: Fan runs continuously.
Auto: Fan runs only when
heating or cooling system is on.
Temperature adjustment
Press to adjust temperature
settings.
System switch (see page 5)
• Cool: Cooling system control.
• Off: All systems off.
• Heat: Heating system control.
• Em Heat: Emergency & Auxiliary
Heat control. Compressor is
locked out.
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RTH3100C