How To Reset A Lennox Furnace – Easy Steps

Reset a Lennox Furnace

A furnace works to keep the temperature of your living areas, such as your home or office, stable. Lennox is one of the best furnace manufacturers in the United States (primarily). If your furnace begins to malfunction, resetting it can assist. Well, this article show you how to Reset a Lennox Furnace step by step.


Why do you need to Reset a Lennox furnace?

Dave Lennox founded Lennox International in 1895, and the company has invented and manufactured numerous types of gas, oil, and electric furnaces since then. Overheating or other similar problems can occur with a Lennox furnace unit. Resetting it can help in this circumstance. Let’s go over the steps to reset your Lennox furnace and get it back to normal.

Steps to Reset a Lennox Furnace

To do this, a few straightforward measures should be taken. The best part is that even a non-technical person can perform these steps. So, without further ado, let’s get started.

First Step

At first, cut off all of the furnace’s electrical sources.  It will keep you safe from electrical injury or risk. Next, locate the circuit breaker switch labeled ‘Furnace’ or ‘Heating system’ and turn it to the ‘Off’ position. Proceed to the next step.

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Second Step

Now, proceed to the furnace’s control panel. If your furnace is a downflow model, the panel may be on the bottom, and if it is an up-flow model, the forum may be on the top. Once you’ve located it, lift the panel up and away from the appliance. Proceed to the third stage.

Third Step

Third, inspect the furnace’s external components for a raised button, which is the Limit control switch. You can also swap to the right of the ignition control box.

Fourth Step

Now, locate the Limit control switch and press and release it. It will reset your Lennox furnace back on.

Final Step

Connect all electrical lines or turn on the power and return to the electrical panel. Now, turn on the ‘Furnace’ or ‘Heating System.’
That’s it.

Final Words

It was the step-by-step procedure for resetting the Lennox furnace. Hopefully, you completed all of the instructions without incident, and your furnace is now operating normally. If not, your furnace may be experiencing another problem that cannot be fixed by resetting it.

People Also Ask

Does a Lennox furnace have a reset button?

The quick answer is no, and there’s no specific button to reset a Lennox furnace. However, you can execute a reset by checking for a raised button or switching to the right of the ignition control box and then pressing and releasing the limit control switch.

Why is my Lennox furnace not working?

Many factors can cause a Lennox furnace to stop working. The following are the causes:

  • First, there is no gas available.
  • The air filter is clogged.
  • The ignition source has failed.
  • A high-limit switch is open.
  • A broken thermostat.
  • A problem with draught motor.
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What does a red blinking light on my Lennox furnace mean?

A red blinking light on the Lennox furnace indicates a low voltage or a short circuit in the furnace heater.

How do I reset my Lennox air handler?

  • Turn off your air conditioner and thermostat.
  • Locate the Circuit Breaker Box.
  • Now, reset the AC unit’s circuit breaker.
  • Wait 30 seconds after that.
  • Return the AC Thermostat to its original setting.