Need help?Do you have a question about the Emerson Sensi 1F86U-42WF and is the answer not in the manual?
Collect Sensi password, Wi-Fi network name/SSID, password, screwdriver, and hardware.
Install the free Sensi app from your smart device's app store for setup.
Register with a valid email and password to enable remote thermostat access and features.
Choose between a full installation or connecting an existing thermostat to Wi-Fi.
Collect necessary tools like screwdrivers and wire cutters for installation.
Safely turn off power to the HVAC system and remove the old thermostat cover.
Identify wire terminals, system type, and manage jumper wires for correct setup.
Label wires, disconnect them, install the Sensi base, and connect the wires.
Attach the thermostat cover and restore power to the HVAC system.
Follow app prompts to connect your thermostat to your home Wi-Fi network.
Name your thermostat and complete registration using location or manual entry.
Optionally enter contractor details and start using the Sensi thermostat.
Log in with your account to control thermostats from multiple devices.
Instructions for recovering a forgotten password and installing multiple thermostats.
Manage account information and review HVAC system configuration settings.
Contact Sensi support via phone or email for troubleshooting assistance.
The Sensi™ Wi-Fi Thermostat is a smart, Wi-Fi enabled device designed to manage your home's heating and air conditioning system remotely and efficiently. This installation guide outlines the process of setting up and connecting the thermostat, ensuring a smooth transition to smart home climate control.
The Sensi Wi-Fi Thermostat allows users to control their home's temperature from anywhere using a smartphone or tablet. It connects to your home's Wi-Fi network, enabling remote access and scheduling capabilities through the Sensi app. The thermostat supports both single-stage and multi-stage conventional systems, as well as heat pump systems, making it versatile for various HVAC setups. It features a clear digital display that shows the current room temperature, set temperature, and humidity. Users can switch between different modes such as Heat, Cool, Auto, and Off, and manage fan settings (Auto or On). The device is designed to be user-friendly, with an intuitive interface on both the physical unit and the accompanying mobile application.
Installation of the Sensi thermostat begins with downloading the Sensi app, which is available for Android (version 4.2 or later) and iOS (version 10.0 or later). Once the app is installed, users are prompted to create a Sensi account using a valid email address and a chosen password. This account is essential for remote access and to link the thermostat to the user's profile.
The installation process is guided step-by-step through the Sensi app. First, users select their thermostat model (1F86U-42WF or UP500W). The app then asks if the thermostat is already on the wall. If not, it guides the user through the complete physical installation. This involves turning off power to the HVAC system, removing the old thermostat cover, and, importantly, taking a photo of the existing wiring for reference. This photo can be crucial for troubleshooting with technical support if needed.
The app then instructs users to remove any jumper wires from the old thermostat, as the Sensi unit has a built-in jumper. Users identify and select the terminal labels that have wires attached on their old thermostat, and the app validates the configuration for compatibility. Next, the system type (Gas, Electric, or Boiler/Radiant) is selected.
The wiring process is meticulously detailed: users label their existing wires with provided stickers, disconnect them, and remove the old thermostat base. The Sensi base is then mounted to the wall using the supplied screws. Wires are inserted into the corresponding terminal slots on the Sensi base and secured with a screwdriver. After all wires are connected, the front display cover is pushed onto the base until it snaps into place. Finally, power is restored to the HVAC system.
Once the physical installation is complete, the app guides the user through connecting the thermostat to Wi-Fi. If the thermostat was already on the wall (e.g., professionally installed), the app jumps directly to this step. Users press "Menu" on the thermostat, then "Connect," which causes the Wi-Fi signal icon to flash. In the app, users select "Next." The app then prompts users to identify their Sensi thermostat by selecting what is displayed on its screen (blank, "00," or "11").
For iOS devices (version 10.0 or later), users navigate to their iPhone's/iPad's Wi-Fi Settings, select the "Sensi" network, and return to the Sensi app. They then input the 8-digit Sensi password (PIN) found on the welcome guide or the back of the thermostat faceplate. For Android devices, users tap "Connect my Sensi to Wi-Fi" in the app, which directs them to their phone's Wi-Fi network list. They select the "Sensi" network, connect to it, and then return to the Sensi app to input the Sensi password.
After connecting to the Sensi network, users select their home's 2.4GHz Wi-Fi network from a list and enter its password. The app then allows users to name their thermostat (e.g., "Downstairs - home," "Upstairs - home") and register it. Registration involves either using the "Locate Me" option to auto-fill address details or manually entering the street address, city, state, zip code, country, and time zone. If a contractor professionally installed the thermostat and is a Sensi partner, they can input their phone number during this step (optional). Upon successful registration, users can start using the Sensi app to control their thermostat.
The Sensi app provides a comprehensive interface for managing climate settings. Users can adjust the set temperature, view the current room temperature and humidity, and change modes. The app also supports scheduling, allowing users to program temperature settings for different times of the day and week, optimizing energy consumption.
The Sensi thermostat is designed for minimal physical maintenance. The primary "maintenance" aspect revolves around managing the Sensi account and ensuring continuous connectivity.
Accessing account information: Users can access and change their email preferences, account information, and email address associated with their Sensi account through the app or the www.sensicomfort.com website. For iOS, this is done by tapping the person icon in the upper right corner of the app; for Android, it's via the three dots in the upper right corner.
Forgot password: If a user forgets their Sensi account password, they can click "Forgot Password" on the login screen of the Sensi app or select "Account" then "My Thermostat" on the www.sensicomfort.com website. A temporary password will be sent to the email address used for login.
Installing multiple thermostats: For homes with more than one Sensi thermostat, the installation process is similar. After installing the first thermostat, users can add additional units by pressing the plus (+) sign on the main screen of the Sensi app (top left for iOS, top right for Android) and following the installation steps again.
Reconnecting to a new router: If an already registered thermostat needs to be reconnected to a new Wi-Fi router, users can use the plus (+) sign in the app, choose "Yes, it is on the wall," and run through the connection steps again.
HVAC configuration menu: The Sensi app automatically configures the thermostat for the system type during installation. However, users can check or adjust these configurations by accessing the "menu" on the physical thermostat. This menu provides options for Wireless Setup (connecting to Wi-Fi), Fahrenheit or Celsius display, Outdoor Equipment Configuration (for cooling or heat pumps), Indoor Equipment Configuration (for gas or electric heat), Reversing Valve Position (for heat pumps only), and Wireless Radio On/Off.
Technical support: For any problems connecting the Sensi thermostat or troubleshooting, users can contact the Sensi Technical Support team via phone at (888) 605.7131 or email at support@sensicomfort.com. The support team can assist with any steps needed to resolve issues.
The Sensi thermostat is designed to be a "set it and forget it" device once properly installed and configured. Its smart capabilities and remote access features aim to provide convenience and energy savings without requiring frequent manual intervention or complex maintenance.
General| Type | Smart Thermostat |
|---|---|
| Product Type | Thermostat |
| Brand | Emerson |
| Model | Sensi 1F86U-42WF |
| Wi-Fi Connectivity | Yes |
| Programmability | 7-day scheduling |
| Humidity Control | No |
| Warranty | 3-year limited warranty |
| Compatibility | HVAC systems |
| Mobile App | Sensi App |
| Voice Control | Yes (Amazon Alexa, Google Assistant) |
| Display | Backlit |
| Energy Saving Features | Smart scheduling, geofencing |
| Power Source | C-wire required |
| Stages | Up to 2 Heat / 2 Cool |
| Features | Remote access, smart alerts, geofencing |
| Temperature Control Accuracy | ±1°F (±0.5°C) |
| Dimensions | 4.5 x 4.5 x 1.0 inches |
| Weight | 0.5 lbs |
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