RTH7400/RTH7500 Series
15 69-2744ES—01
About your new thermostat
Use this feature in climates where both air conditioning and heating are used on the
same day. When the system mode is in Auto, the thermostat automatically selects heating
or cooling depending on the indoor temperature.
While in the Auto mode, if a schedule override takes place (temporarily or permanently)
the thermostat will automatically adjust the cooling and heating settings to maintain a
3-degree separation between the cool and heat settings.
For example, if the heat temperature is raised to where it gets within 3-dgrees of the cool
setting, the display will show an up arrow next to “cool” to show the thermostat is raising
the cool setting up to maintain a 3-dgreee separation.
The display will also show both “Auto” and either “Heat” or “Cool” for which temperature
setting you are currently adjusting. Press the system button to select between the heat
and cool to view/adjust either mode.
Auto Changeover
