Compressor

Short-Cycle Protection.

Your thermostat can be configured to protect your system against premature compressor failure by “locking out” the compressor. This ensures that the compressor will stay off for at least five minutes on each cycle. When the thermostat is in compressor lock-out, the word COOL will flash. During this period, the compressor will not be energized. See installation and configuration, page 18, step 6.

Air Filter

Change-Out Indicator.

This feature allows the thermostat to display the words CHNG FLTR (change filter) after a set time of fan operation. This is a reminder to change or clean your air filter. The factory set interval for CHNG FLTR to be displayed is 200 hours of fan opera- tion. This can be set anywhere from 0

to 1950 hours in 25 hour increments. A selection of 00 will cancel this feature.

When CHNG FLTR is displayed, you can clear it by pressing the HUM/ FLTR SERVICE button. This resets the timer and starts counting the hours until the next filter change.

The following steps will allow you to change the number of hours for filter change-out.

1.If you see CHNG FLTR on the display, press the HUM/FLTR SERVICE button once to reset the timer. If you do not see CHNG FLTR proceed to step 2.

On a 7–Day thermostat, when the HUM/FLTR SERVICE button is pressed twice, the display will show the number of hours remaining before CHNG FLTR indicator will display.

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2.Press the HUM/FLTR SERVICE button. The display will show SET FILTER TIME and will show the number of hours to filter change.

3.Press TIME FWD or TIME BACK to change the time to your require- ments.

4.Press PROGRAM RUN to return to the normal operating mode.

NOTE: If unsure what interval to use between filter changes or cleaning, contact the manufacturer of your heating/cooling equipment.

System and

Thermostat Diagnostics.

The display will indicate CHECK SYSTEM if the room temperature does not rise within two hours of the call for heat. After two hours the thermostat will quit calling for heat for one minute (this allows some furnaces to reset) and call for heat again. It will

Features

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Emerson 1F97-391 Compressor Short-Cycle Protection, Air Filter Change-Out Indicator, System Thermostat Diagnostics
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1F97-391 specifications

The Emerson 1F97-391 is a sophisticated, programmable thermostat designed to enhance comfort and efficiency in residential heating and cooling systems. With its sleek design and user-friendly interface, this thermostat stands out for those looking to upgrade their home climate control.

One of the main features of the Emerson 1F97-391 is its ability to be programmed for up to seven days. This allows users to set different temperature schedules for different days of the week, which is particularly useful for families with varying routines. The thermostat also boasts a large, backlit display that makes it easy to read temperature settings and other information, even in low-light conditions.

In terms of technology, the Emerson 1F97-391 is equipped with Smart Response technology, which learns your heating and cooling patterns and adjusts accordingly. This feature is designed to ensure that your home reaches the desired temperature by the time you're scheduled to arrive, optimizing energy efficiency. Additionally, the thermostat can be paired with Wi-Fi connectivity, allowing for remote access through a mobile app. This means users can adjust their home’s temperature from anywhere, ensuring comfort upon arrival.

Another significant characteristic of the Emerson 1F97-391 is its compatibility with a wide range of HVAC systems, including single-stage and multi-stage systems, heat pumps, and gas or electric furnaces. This versatility makes it an ideal choice for a variety of homes and setups.

Moreover, the thermostat features a built-in humidity sensor, providing users with not only temperature control but also the ability to monitor and manage indoor air quality. This is crucial for maintaining a comfortable living environment and can contribute to overall health and well-being.

The Emerson 1F97-391 also incorporates energy-saving functions such as Eco mode and built-in reminders for filter changes. These features help users maintain their systems efficiently while ensuring optimal performance over time.

In summary, the Emerson 1F97-391 is a modern thermostat offering programmable capabilities, advanced technology like Smart Response, and compatibility with various HVAC systems. It encompasses features focused on energy efficiency and user convenience, making it an excellent choice for anyone seeking to enhance their home’s climate control system.
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