How to Reset Lennox AC Remote Settings: A Comprehensive Guide

Resetting your Lennox AC remote settings can be a straightforward process, but it’s essential to follow the right steps to ensure a successful reset. This comprehensive guide will walk you through the entire process, from removing the batteries to clearing error codes, providing you with the technical details and expert-level insights you need to get your Lennox AC system back up and running smoothly.

Resetting the Lennox AC Remote

  1. Remove the Batteries
  2. Unscrew the battery compartment on the back of the remote control.
  3. Carefully remove the old batteries, ensuring that you don’t damage the battery contacts.
  4. Let the remote sit for at least 30 seconds to allow any residual charge to dissipate.

  5. Press and Hold All Buttons

  6. With the batteries removed, press and hold down all the buttons on the remote control simultaneously.
  7. Continue holding the buttons for a full 5 seconds to ensure that any remaining power is drained from the device.
  8. This step helps to clear the remote’s memory and prepare it for a fresh reset.

  9. Reinsert Fresh Batteries

  10. Carefully insert new, high-quality batteries into the remote control, making sure they are properly aligned and seated.
  11. Ensure that the battery compartment is securely closed and the remote is fully reassembled.

  12. Point the Remote at the AC Unit

  13. Stand directly in front of your Lennox air conditioning unit, ensuring that there are no obstructions between the remote and the AC.
  14. Aim the remote control directly at the AC unit, maintaining a clear line of sight.

  15. Press the “Reset” Button

  16. Locate the reset button on your Lennox AC remote control. This is typically a small, recessed button that may require a paperclip or other small tool to access.
  17. Press and hold the reset button for a full 10 seconds, applying firm pressure to ensure a complete reset.

  18. Test the Remote

  19. After releasing the reset button, try pressing various buttons on the remote control to ensure that the AC unit is responding.
  20. You should see the AC unit react to your commands, indicating that the reset was successful.

Clearing Error Code 413 on Lennox HVAC Systems

how to reset Lennox  ac remote settingsImage source: Lennox Ac by Raysonho

For advanced users, if you encounter an Error Code 413 on your Lennox HVAC system, you can follow these additional steps to clear the error and restart the system:

  1. Pull the Power to the Outside Unit
  2. Locate the circuit breaker or disconnect switch that supplies power to the outdoor compressor unit.
  3. Turn off the power to the outside unit, allowing the capacitors to fully discharge.
  4. Wait for at least 1-2 minutes before proceeding to the next step.

  5. Turn Off the Air Handler Inside

  6. Locate the air handler unit, typically installed inside your home, and turn off the power to this component.
  7. This will shut down the main computer and thermostat control panel, preparing the system for a full reset.

  8. Start Everything Back Up

  9. Restore power to the air handler unit, allowing it to go through the full boot-up sequence.
  10. Once the air handler is back online, turn the power back on to the outdoor compressor unit.

  11. Check for the Error Code

  12. After the system has fully restarted, check the thermostat or control panel for any remaining error codes.
  13. If the Error Code 413 has been cleared, your Lennox HVAC system should be back to normal operation.

If the error code persists or you encounter any other issues, it’s recommended to consult a professional HVAC technician to diagnose and address the underlying problem.


Resetting your Lennox AC remote settings is a straightforward process that can help resolve a variety of issues, from unresponsive remotes to error codes. By following the detailed steps outlined in this guide, you can confidently tackle this task and get your Lennox AC system back to optimal performance. Remember to always prioritize safety and consider seeking professional assistance if you encounter any complex problems or concerns.


  1. Lennox iComfort Clear Error Code 413 How to Reset Your HVAC Air…
  2. Lennox Ductless A/C (split system) with a remote control
  3. Master the Art of Air Conditioner Remote Control Reset!
  4. Lennox Commercial User Guide
  5. Lennox Air Conditioner Reset Button: The Ultimate Solution to…