Where Is The Reset Button On A Lennox Furnace?

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If you own a Lennox furnace and are experiencing issues with your system, you may be wondering where the reset button is located. The reset button is a crucial component that can help you troubleshoot and resolve common furnace problems. In this article, we will guide you through the process of finding the reset button on your Lennox furnace.

Locating the Reset Button

The reset button on a Lennox furnace is typically located on the main control board. To access the control board, you will need to remove the furnace cover. Start by turning off the power to the furnace using the main electrical switch. Once the power is off, carefully remove the cover by unscrewing the screws or unclipping the latches securing it in place.

Once the cover is removed, you will see the control board, which is a rectangular-shaped electronic component with various wires and connectors. Look for a small red or yellow button on the control board. This button is the reset button for your Lennox furnace.

Resetting the Furnace

To reset your Lennox furnace, press and hold the reset button for about 10 seconds. You may need to use a small tool like a pen or a paperclip to press the button. While holding the button, you should see the status lights on the control board flash. This indicates that the system is resetting.

After releasing the reset button, wait for a few minutes to allow the furnace to restart. During this time, the control board will run a diagnostic check to identify any underlying issues. If the reset was successful and there are no further problems, the furnace should start operating normally again.

When to Reset Your Furnace

While the reset button can be a useful tool for troubleshooting minor issues, it is important to understand when it should be used. The reset button should only be pressed if you are experiencing minor problems such as a temporary loss of heat or a system lockout due to a power surge.

If you find yourself having to reset your Lennox furnace frequently, it may indicate a more serious problem that requires professional attention. In such cases, it is best to contact a certified HVAC technician who can diagnose and repair the underlying issue.

Troubleshooting Tips

If you are still experiencing issues with your Lennox furnace after resetting it, there are a few additional troubleshooting tips you can try before calling a professional:

1. Check the air filter: A dirty or clogged air filter can restrict airflow and cause the furnace to overheat. Check the filter and replace it if necessary.

2. Inspect the thermostat: Make sure the thermostat is set to the desired temperature and in the appropriate mode (heat or cool). Replace the batteries if needed.

3. Check the circuit breaker: Ensure that the circuit breaker for your furnace is in the “on” position. If it has tripped, reset it and see if that resolves the issue.

4. Verify the gas supply: If your furnace runs on natural gas, make sure the gas supply is turned on and that the pilot light is lit.

5. Clear obstructions: Check the vents and registers throughout your home to ensure they are not blocked by furniture or other objects.

Remember, if these troubleshooting steps do not resolve the problem, it is best to seek professional assistance to avoid further damage to your furnace.

In Conclusion

The reset button on a Lennox furnace is an essential tool for troubleshooting minor issues. By knowing where to locate it and how to use it, you can potentially resolve common problems and restore your furnace’s functionality. However, if you are facing recurring issues or more complex problems, it is always recommended to consult a professional HVAC technician for proper diagnosis and repairs.