The display light and audio prompting (beep) only work when the thermostat is on the wall and 24 VAC power is present to the thermo- stat. These features will not work on battery power alone. See OPERATING YOUR THERMOSTAT.

9.The display is flashing BAT. What does this mean?

The 9 volt battery installed in the thermostat is low and should be replaced with a fresh 9 volt Energizer® alkaline battery. See OPER-

ATING YOUR THERMOSTAT.

10.Why won’t the system turn on, even though the thermostat display is func- tioning normally?

Either the compressor lockout feature is in operation or the thermostat is not currently calling for heat or cool. Wait about 5 minutes for the compressor lockout to expire. If the

system is still not running, read the following cautionary statement. Then, if conditions

permit, use the or buttons to move the temperature above or below the setpoint temperature. See OPERATING YOUR THERMOSTAT.

!CAUTION

If the outside temperature is below 50°F,

DO NOT use the button to move the temperature below the setpoint tempera- ture. Property damage may result due to compressor slugging.

11.Why doesn’t the temperature change at the time I programmed?

There may be a number of causes for this situation. The following are primary rea- sons.

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White Rodgers 1F91W-71 manual Display is flashing BAT. What does this mean?, Ating Your Thermostat

1F91W-71 specifications

The White Rodgers 1F91W-71 is a prominent thermostat designed for consumers seeking advanced climate control solutions in residential settings. This device is notable for its user-friendly interface and a variety of features that enhance energy efficiency and comfort within the home.

One of the key aspects of the 1F91W-71 is its programmable capabilities, allowing users to set specific temperatures according to their schedule. This feature enables homeowners to optimize their energy consumption, reducing costs while maintaining a comfortable environment. The thermostat offers a schedule that can be customized for weekdays and weekends, allowing flexibility for different routines.

The design of the 1F91W-71 is both sleek and functional, with a clear display that is easy to read. The large, backlit screen ensures visibility even in low-light conditions, making adjustments straightforward. The intuitive layout of the buttons simplifies the experience for users of all ages.

In terms of technology, the White Rodgers 1F91W-71 incorporates advanced predictive algorithms that learn from the user’s behavior to optimize heating and cooling cycles. This smart capability helps in achieving the desired temperature more efficiently, minimizing energy wastage.

Another noteworthy feature is the thermostat's compatibility with various heating and cooling systems, including conventional gas, oil, and electric systems, as well as heat pumps. This versatility makes it an attractive option for many households, particularly those looking to upgrade from older, less efficient models.

The 1F91W-71 also includes features like a filter indicator, which reminds users when it's time to replace or clean the HVAC filter, ensuring that the system operates efficiently. Moreover, the thermostat supports battery backup, ensuring that settings are retained even during power outages.

Users will also appreciate the unit's easy installation process, accompanied by clear instructions, making it accessible for those who prefer a DIY approach. Overall, the White Rodgers 1F91W-71 combines advanced features, ease of use, and compatibility with various HVAC systems, making it a comprehensive solution for homeowners seeking greater control over their indoor climate. With its user-centric design and energy-saving technologies, this thermostat stands as a reliable choice for modern heating and cooling management.