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Honeywell RTH4300B User Manual

Page 5

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RTH4300B Programmable Thermostat

3

About your new thermostat

Quick reference to controls

Temperature adjustment (see page 10-12)

Fan Switch (see page 7)
On: Fan runs continuously.
Auto: Fan runs only when heating
or cooling system is on.

Set: Press to set time/day/

schedule.

Hold:

Press to override

programmed temperature control.

Run: Press to resume program

schedule.

System switch (see page 6)
Cool: Cooling system control.
Off: All systems off.
Heat: Heating system control.