White Rodgers 1F90-51 manual Thermostat immediately, press

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tery. The thermostat will revert to the factory preset program until you reprogram the thermostat. If you don’t want to reprogram

the thermostat immediately, press

SYSTEM

SWITCH

until OFF is displayed and replace the ther-

mostat on the wall. Then press PRGMRUN to begin

the factory preset program. Or you may reprogram the thermostat, then replace it on the wall.

To prevent further static discharge prob- lems, touch another object to release static build-up before touching the thermostat. See OPERATING YOUR THERMOSTAT.

6.The display is flashing BATTERY. What does this mean?

The “AA” batteries installed in the thermo- stat are low and should be replaced with

fresh “AA” Energizer® alkaline batteries. See

OPERATING YOUR THERMOSTAT.

7.The display shows a continuous (non- flashing) BATTERY. What does this mean?

The thermostat is not being supplied with 24 VAC power. The thermostat is operating on battery power alone. See OPERATING YOUR THERMOSTAT.

8.Why won’t the compressor 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 cool. Wait about 5 minutes for the compressor lockout to expire. If the system is still not running, read the cautionary state- ment below. Then, if conditions permit,

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Contents 1F90-51 About Your New Thermostat Your NEW THERMOSTAT’S Programming Your Questions and AnswersOperating Your Thermostat Your NEW THERMOSTAT’S Features Operating Your Thermostat Parts of the Thermostat Back of The Thermostat BodyUse To turn the thermostat OFFBack of Thermostat Body Display System Thermostat Buttons System Operating Features TWO Hour Temperature OverAdvance Program KEY Press Convertibility Press TimefwdTo 40. Use Programming Programming Your Thermostat Planning for Your NeedsYour Home Factory Preprogramming Heating/Cooling Schedule Plan Sample Entering Your Program USETo Turn Thermostat OFF Before Reattaching Thermostat to SubbaseEnter Heating Program Gramming after this happens, press Prgmview untilUntil PRG Check Your Programming Enter Cooling ProgramOperation. USE To Turn TherSystem. Then press How can I permanently change a part of my program? Programming Your ThermostatGramming Your Thermostat Erating Your ThermostatDisplay is flashing BATTERY. What does this mean? Thermostat immediately, pressOperating Your Thermostat Ating Your Thermostat Why is the system turning on and off so frequently seldom?Simply press Ming Your Thermostat Part No -5099B

1F90-51 specifications

The White Rodgers 1F90-51 is a state-of-the-art digital thermostat designed for enhanced comfort and energy efficiency in residential heating and cooling systems. This programmable thermostat offers a range of advanced features that make it a popular choice among homeowners looking to optimize their indoor climate while reducing energy costs.

One of the standout features of the 1F90-51 is its 7-day programmable schedule. This allows users to customize temperature settings for different days of the week, accommodating varied schedules. Homeowners can program multiple temperature settings throughout the day, ensuring that their home remains comfortable when they are present and conserves energy when they are away. This level of control is essential for maximizing efficiency and minimizing heating and cooling costs.

The 1F90-51 is equipped with an easy-to-read backlit display that clearly shows the current temperature, setpoint, and other relevant information. This intuitive interface allows users to quickly and easily adjust settings, making it user-friendly for individuals of all ages. Additionally, the thermostat provides a simple setup process, enabling quick installation and integration into existing systems.

Smart technology is also a defining aspect of the White Rodgers 1F90-51. The thermostat can be used with compatible heating and cooling systems, including single-stage and multi-stage units. This versatility allows homeowners to upgrade their existing systems without the need for extensive modifications. The thermostat also features adaptive recovery technology, which learns the time it takes to reach the desired temperature and adjusts the heating or cooling system accordingly. This results in consistent comfort without unnecessary energy consumption.

Another characteristic of the 1F90-51 is its direct compatibility with various HVAC systems, which adds to its appeal for a wide range of consumers. The thermostat can control up to two stages of heating and two stages of cooling, making it suitable for both conventional and advanced heating and cooling formats.

Furthermore, the White Rodgers 1F90-51 is designed with energy-saving features. It has a built-in energy savings mode, which can suggest more efficient temperature settings. This focus on energy efficiency not only helps homeowners save money but also contributes to broader environmental sustainability efforts.

Overall, the White Rodgers 1F90-51 is a well-rounded digital thermostat that combines advanced technology, user-friendly features, and energy efficiency. Its programmable schedule, adaptable recovery technology, and support for multiple HVAC systems make it an excellent choice for those looking to enhance comfort and efficiency in their homes.
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