24 VAC power is not being supplied to the thermostat and the thermostat is operating on battery power only.

•AUDIO PROMPTING — Each time you press a button, the thermostat will beep.

•BACKLIT DISPLAY — When you press any button on the thermostat, the display is lit for approximately eight seconds.

•SYSTEM INDICATOR LIGHT — The red light on the upper right part of the thermostat indicates system operation (see PARTS OF THE THERMOSTAT).

•COMPRESSOR SHORT CYCLE PROTEC- TION — To protect your compressor from potential damage due to rapid cycling, this thermostat has a built-in delay of 5 minutes between cooling cycles. The following may cause a time delay in COOL:

a)Return of power after a power outage.

b) Pressing SYSTEM to change operating

SWITCH

modes.

c)Pressing , creating a call for COOL too soon after a previous call.

•TOTAL KEYPAD LOCKOUT—WhenGroup A option switch #1 is in the total keypad lockout position (ON), programs cannot be altered and all buttons are disabled (see next page for illustration).

NOTE

Programming should be completed and batter- ies should be installed before changing Group A option switches #1 or #2.

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White Rodgers 1F90-71 manual Switch
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1F90-71 specifications

The White Rodgers 1F90-71 is a versatile and efficient programmable thermostat designed to enhance home comfort and energy savings. Known for its user-friendly interface and advanced features, this thermostat is an excellent choice for homeowners looking to optimize their heating and cooling systems.

One of the standout features of the 1F90-71 is its 7-day programmable scheduling capability. This allows users to set different temperatures for each day of the week, accommodating individual schedules and preferences. With this functionality, homeowners can ensure their HVAC systems operate efficiently, reducing energy consumption when occupants are not at home while still providing comfort during peak hours.

The thermostat boasts a large, easy-to-read display, which provides clear visual feedback on current temperatures and settings. The intuitive interface simplifies programming and adjustments, making it accessible even for those who may not be tech-savvy. Additionally, the color touchscreen enhances the aesthetic appeal, adding a modern touch to any home.

Another noteworthy characteristic of the White Rodgers 1F90-71 is its compatibility with a variety of heating and cooling systems. It supports single-stage and multi-stage heating and cooling, as well as heat pumps with auxiliary heat, making it a flexible solution for different home configurations. This compatibility ensures that the thermostat can effectively control the temperature in both conventional and more advanced systems.

The 1F90-71 also integrates advanced features, such as Smart Recovery technology. This allows the thermostat to learn how long it takes to reach the desired temperature and begin adjusting the system proactively. This feature enhances comfort while minimizing energy usage, which results in lower utility bills.

Moreover, the thermostat offers a filter change reminder, helping homeowners maintain their HVAC systems in optimal condition. Regular filter changes ensure better air quality and system efficiency, thus prolonging the life of the equipment.

In summary, the White Rodgers 1F90-71 is a powerful programmable thermostat that combines convenience, compatibility, and efficiency. Its advanced scheduling, intuitive interface, and smart technologies make it a reliable choice for modern homes, ultimately helping homeowners achieve enhanced comfort while reducing their energy footprint.
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