Quick reference to display
Setpoint indicator
Appears when the setpoint
temperature is displayed.
Clock
Schedule period
System status
• Cool On: Cooling is activated. *
• Heat On: Heating is activated. *
• Aux On: Auxiliary heat is activated.
* When Heat On or Cool On is flashing, compressor protection is engaged (see page 15).
RTH2510/RTH2410 Programmable Thermostat
Temporary schedule override
(see page 13)
Low-battery warning
(see page 16)
Permanent schedule override
(see page 14)
Temperature
The ambient (measured) temperature is
normally displayed. To view the setpoint
temperature, press the Up or Down
button once. The setpoint temperature
will appear for five seconds.
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