How To Reset Lennox ICOMFORT Wi-Fi Thermostat – Updated

Many homes have essential appliances and systems that occasionally need repair or resetting, including the thermostat. Understanding how to reset a Lennox iComfort WiFi thermostat is crucial for maintaining an efficient heating system and reducing home heating costs. This article aims to guide you through the process of resetting this specific thermostat model.

If you’re dealing with an outdated or malfunctioning thermostat, consider replacing it. Replacement thermostats, including the Lennox iComfort model, are readily available at local hardware or home improvement stores. Thermostats play a critical role in your HVAC system, ensuring your home’s comfort levels are consistent and pleasant.

A malfunctioning thermostat can lead to increased repair expenses and energy costs. Fortunately, with some basic knowledge, you can often troubleshoot and fix these issues yourself, potentially saving significant money.

In this guide, we’ll begin by identifying common signs of a thermostat needing a reset. Then, we’ll provide a detailed, step-by-step guide to resetting your Lennox thermostat. Whether you’re a seasoned DIY enthusiast or new to home repairs, this guide will equip you with the knowledge to efficiently manage your thermostat’s issues.

Most of the time only resetting solve most of the errors pop up on the screen of IComfort Thermostat Not Connecting to Server, so better to start with solving by resetting it.

How To Reset Lennox ICOMFORT Wi-Fi Thermostat
Reset Lennox ICOMFORT Wi-Fi Thermostat

So here is the Steps of How To Reset Lennox ICOMFORT Wi-Fi Thermostat

Option 1: Soft Reset

A soft reset will reboot the thermostat without erasing your settings. This can help resolve minor issues. Follow these steps:

  1. Locate the thermostat on your wall.
  2. Remove the thermostat from its wall mount by gently pulling it away from the base.
  3. Wait for about 30 seconds.
  4. Reattach the thermostat to the wall mount.

The thermostat should restart, and you can check if the issue is resolved.

Option 2: How To Factory Reset Lennox ICOMFORT Wi-Fi Thermostat

  1. Press the Home button on the thermostat.
  2. Scroll up to the top of the screen and tap the Menu button.
  3. Select Settings from the menu.
  4. Scroll down to the bottom of the screen and choose “System Reset“.
  5. A message will appear saying “Reset Thermostat”.
  6. Tap on Reset to confirm.
  7. Press the reset button located at the bottom of the thermostat.
  8. The thermostat will restart and display the factory default settings.
  9. The thermostat will prompt you to use the default setting.
  10. Tap the “Use Default Settings” button.
  11. The thermostat will then go through the startup process and reboot itself.
  12. The thermostat will now display the home screen and the original settings.

Related: Lennox icomfort Thermostat Problems

Option 3: Remote Reset (via

You can also reset your Lennox iComfort thermostat remotely through the website if you have previously registered your thermostat online.

  1. Go to the website and log in with your account.
  2. Select your thermostat from the list of registered devices.
  3. Look for the option to “Reset” or “Factory Reset” and follow the on-screen instructions.

This method is useful if you can’t access the thermostat physically or if you want to reset it remotely.

Please note that the exact steps may vary slightly depending on your specific Lennox iComfort thermostat model.

However, it’s important to note that resetting your thermostat can erase customized settings, such as schedules and preferences. If you need more detailed instructions or encounter issues during the reset process, you can refer to the iComfort Wi-Fi Homeowners Manual or check the Lennox iComfort support center for FAQs that may address your specific model and concerns.

How Do I Connect My ICOMFORT Thermostat To WIFI?

The first step to connecting the iComfort thermostat to WIFI is locating the thermostat. The iComfort thermostat is usually on the wall near the furnace, so it may be necessary to look inside your furnace room. Follow the instruction booklet that came with your device to install. Once you have installed it, go into settings on your phone or laptop and type in “iComfort” into the search bar.

How Do I Register My Lennox ICOMFORT Thermostat?

From the WI-FI SETTINGS screen, press either the thermostat not registered icon or the connection status icon and select the server icon.

 How To Reset Lennox ICOMFORT Wi-Fi Thermostat

Enter homeowner’s email address and press the register button.

1 2

A pop-up screen will appear asking if the email address below is correct? Verify the email address is correct and press yes.

Another pop-up screen will appear notifying the user to check their email.

1 3

NOTE – If the email address originally entered is incorrect, return to the thermostat registered screen and reenter the correct information, and press register

After the server sends the email with the network link, registration and account creation must be completed from the homeowner’s personal computer.

NOTE – Time from pushing the registration button on the thermostat and receiving the consumer portal register link from your email on your computer is normally from 5 to 15 minutes depending on Internet speed and traffic.

NOTE – Registration cannot be completed from any mobile device.

After registration has been completed, press the connection status icon to verify the connection was successful. If the connection is successful the server icon background will be green.

How Do I Connect my Lennox Thermostat to my phone?

  1. Go to Top.
  2. Press “Wi-Fi” on the iComfort Wi-Fi thermostat.
  3. Press “Enable Wi-Fi
  4. Press “Agree” to the Terms and Conditions to proceed.

How Do I Find My ICOMFORT Thermostat Pin?

The iComfort thermostat pin is located on the back of the unit. It is best to use a flathead screwdriver or similar tool to locate the pin. You will need to remove the thermostat cover with a Phillips head screwdriver, then insert your tool into the hole and turn it clockwise until you hear a click. This should release the connector from the board. Once released, pull up on the connector while gently pulling on the wires from the control board

How Do You Turn Off The Schedule On A Lennox Thermostat?

1 − Press the HOLD key.

NOTE − Permanent Hold” appears on the screen under the current time.

2 − Use the UP and Down to adjust the temperature to the setting that you want the thermostat to hold.

3 − Press CANCEL key to cancel the permanent hold and re- sum schedule.

How do you calibrate a Lennox thermostat?

To do so, locate your home’s thermostat and tape an accurate thermometer on the wall next to it.

Wait 15 minutes and check the temperature reading on both devices.

A variance of +/- 3˚F is generally acceptable, but anything outside that range means your previously accurate thermostat may require service.

Lennox ICOMFORT Thermostat Installation Manual

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