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Lennox S40 Smart Thermostat Support

Get Started with Your Lennox S40 Smart Thermostat

Lennox S40 Smart Thermostat Support
Description

Welcome to your go-to resource for getting started, setting up your thermostat, and solving common issues. From step-by-step guides to troubleshooting tips, we’ll help you unlock the full potential of your thermostat and keep your home comfort running smoothly.

Your Home Comfort Command Center

Just a few quick steps to get your Lennox S40 Smart Thermostat set up online and to redefine comfort and efficiency for your entire home.

Set Up Wi-Fi

From your thermostat's home screen, go to Menu > Settings > Wi-Fi.

  1. Slide the option to the ON position to enable Wi-Fi.

  2. Press on "Not Connected" to display a list of available access points.

  3. Locate home network and select the network name.

  4. Enter the home Wi-Fi network password and press join to continue. If successful the Thermostat Connectivity Status indicator will show checkmarks across all connections

Create Account / Login

Create Your Account Login Credential on your Lennox Smart Thermostat

  1. Select "Create New Account".

  2. Enter account details such as your first and last name, phone, email address, and password.

  3. Select whether you want to receive e-mail updates, reminders and performance reports.

  4. Select allow your dealer to receive notifications (highly recommended).

  5. Select agree to EULA.

  6. Enter your information and select Next. Enter your country/region, address, city, state, and zip code.

  7. Select Create Account.

Enable Advanced Diagnostics

From your thermostat's home screen, go to Menu > Settings > Dealer Support Services

  1. There are two screens under this section, Service Contact Info and Dealer Support Access. If you wish to allow your service provider direct access for troubleshooting your system, then select the following (highly recommended):

  2. Remote Sharing: “ON” - Allows your Lennox Dealer to remotely evaluate the status of your system to ensure optimal performance.

  3. Advanced Diagnostics & Troubleshooting: “ON/ALWAYS” - You will always give authorization to your Lennox Dealer to troubleshoot your system remotely. “OFF” - You will not give authorization to your Lennox Dealer to troubleshoot your system and address system performance remotely.

  4. Alerts and Notifications: “ON” - Allows your Lennox Dealer to receive updates when your system needs maintenance.

  5. Note: All three options must be toggled on for Advanced Diagnostics & Troubleshooting to function.

Download the Lennox Home App

  1. Search for the “Lennox Smart Thermostat App” in the Apple App Store or on Google Play, and download to your smartphone or tablet.

  2. From your home screen, go to Menu > User Account and enter your credentials.

  3. If you already have an account and are connecting multiple thermostats, select “Existing Account” and use your credentials to connect them.

Key Features and Tools

Knowing the details of a few key features will make both you and your home smarter.

FAQs

Find answers to common questions about your thermostat from setup and Wi-Fi connection to troubleshooting and energy-saving tips.

How do I setup or create an account?

You can create a Lennox account from either your smart phone or directly on the thermostat. Launch the Lennox Home App and select the Sign up option.

How do I add a thermostat to my account?

To add a thermostat to your account you will need to be standing in front of your Lennox S40 Smart Thermostat and be logged into your Lennox Home App. From your thermostat...

How do I reset my password?

From the thermostat, if you go to  Menu > User Account > Email > Forgot Password > Enter Password  and hit  Accept , you will be able to reset your Lennox S40...

How do I create a Lennox Smart Thermostat account if I had moved into a home that had already registered?

If you have moved into a home with an S40 that is still registered to the previous owner's account, you may re-register this thermostat after unregistering it first. To unregister, go to ...

What information and adjustment settings are displayed on my thermostat screen?

Temperature Settings: Large display with your current indoor temperature (°F or °C). Heating and Cooling Setpoint Indicators (Ball) on the horseshoe dial. Heating and Cooling Setpoint numerical values displayed at the ends...

How do I enable Matter on my thermostat?

Make sure your Lennox Smart Thermostat has been successfully upgraded to version 4.38 and is online. Make sure your thermostat  and  smartphone/controller  are connected to the  same Wi-Fi network . Navigate to...