How to Change Mode in Lennox AC Remote: A Comprehensive Guide

Changing the mode on your Lennox AC remote is a straightforward process, but it’s essential to understand the various options and the proper steps to ensure your system operates efficiently. This comprehensive guide will walk you through the detailed process of accessing the mode screen, selecting the desired mode, and confirming the selection, providing you with the necessary technical knowledge to take control of your Lennox AC system.

Accessing the Mode Screen

  1. Activate the Backlight: If the screen on your Lennox AC remote is dark, touch the screen to turn on the backlight. This will make the display more visible and easier to navigate.

  2. Navigate to the Operating Mode: Locate the “OPERATING MODE” area on the remote’s display. This is typically a dedicated section or button that will allow you to access the mode selection screen.

  3. Enter the Mode Selection: Once you’ve found the “OPERATING MODE” area, touch or press it to enter the mode selection screen. This will present you with the available operating modes for your Lennox AC system.

Selecting the Desired Mode

how to change mode in Lennox  ac remoteImage source: Lennox Ac by Raysonho

Your Lennox AC remote offers a variety of operating modes to choose from, each with its own unique functionality and purpose. The selectable modes include:

  1. Heat/Cool: This mode allows the system to automatically switch between heating and cooling based on the set temperature and ambient conditions.
  2. Heat Only: In this mode, the system will only operate in heating mode, regardless of the ambient temperature.
  3. Cool Only: This mode restricts the system to only operate in cooling mode, ignoring any heating requirements.
  4. Off: When selected, the system will be turned off and will not provide any heating or cooling.
  5. Emergency Heat: This mode is typically used in heat pump systems and activates the auxiliary heating source, such as electric or gas heating, in the event of a heat pump failure or extreme cold conditions.
  6. Schedule 1, Schedule 2, and Schedule 3: These modes allow you to set pre-programmed schedules for your Lennox AC system, enabling automatic temperature adjustments based on your preferences and daily routines.

In addition to the operating modes, you can also set the fan operation to one of the following options:

  • On: The fan will run continuously, regardless of the heating or cooling demand.
  • Auto: The fan will only run when the system is actively heating or cooling.
  • Circulate: The fan will run periodically to circulate the air, even when the system is not actively heating or cooling.

Confirming the Selection

After selecting the desired operating mode and fan setting, it’s essential to confirm the changes to ensure the Lennox AC system operates as intended. To do this:

  1. Review the Selection: Carefully review the mode and fan settings displayed on the remote to ensure they match your desired configuration.

  2. Press the “Confirm” Button: Once you’re satisfied with the selected settings, press the “Confirm” button on the remote. This will apply the changes and move you to the setpoint selection screen, where you can adjust the temperature as needed.

Switching Between Cooling and Heating Modes

To transition from cooling mode to heating mode (or vice versa), follow these steps:

  1. Access the Mode Screen: Press the “MODE” button on the remote to access the mode selection screen.

  2. Select the Desired Mode: Use the “+” and “-” buttons to scroll through the available modes until you reach the desired setting, such as “HEAT” for heating mode or “COOL” for cooling mode.

  3. Adjust the Temperature: Once you’ve selected the new mode, use the “+” and “-” buttons to adjust the setpoint temperature to your preferred level.

  4. Confirm the Selection: Press the “Confirm” button to apply the new mode and temperature settings.

It’s important to note that frequent changes to the operating mode may cause system malfunction. Allow at least one minute between mode changes to allow the system to stabilize and prevent any potential issues.

Troubleshooting and Maintenance

If you encounter any issues or have concerns about the performance of your Lennox AC system, it’s recommended to consult the manufacturer’s user manual or contact a qualified HVAC technician for assistance. Proper maintenance, such as regular filter changes and system inspections, can also help ensure your Lennox AC system operates at its best.


Mastering the art of changing modes on your Lennox AC remote is a valuable skill that can help you optimize the performance and efficiency of your home cooling and heating system. By following the detailed steps outlined in this comprehensive guide, you’ll be able to navigate the mode selection process with confidence, ensuring your Lennox AC system meets your comfort needs throughout the year.