Emerson ST25 Thermostat – User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
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Table of Contents:
Page 2 – YOU WILL NEED
Page 3 – Add your thermostat to the Sensi app; INSTALLATION; Is your Sensi thermostat already on your wall?; NEW INSTALLATION; New Installation; NOT MOUNTED
Page 4 – Remove the old thermostat from your wall; INSTALLING THE SENSI THERMOSTAT
Page 5 – Secure your new thermostat base; Use PIN
Page 6 – Connecting to Wi-Fi and registering; troubleshooting section on pg. 7 for more information.
Page 7 – • Ensure that there is power to your HVAC system and there is no error; Connecting to Wi-Fi troubleshooting; • Reboot your smartphone.; Reconnecting to Wi-Fi; TROUBLESHOOTING
Page 8 – HVAC configuration menu; Forgot Password; on the login screen of
Page 9 – Installing multiple thermostats; For iOS: Tap the person icon in the upper right corner.; Technical support; NOTES
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SENSI
™
LITE SMART THERMOSTAT
Installation guide
Models: 1F76U-22WFB series, ST25 series Version: February 2023
R-5664
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Summary
Page 2 - YOU WILL NEED
Sensi Lite smart thermostat | INSTALLATION GUIDE 2 YOU WILL NEED Gather this information before you begin installation for a smoother walk through. - Wi-Fi Network Name/SSID (Make sure this is a 2.4GHz network) - Wi-Fi Network Password - Screwdriver - Hardware in Sensi Lite smart thermostat packagin...
Page 3 - Add your thermostat to the Sensi app; INSTALLATION; Is your Sensi thermostat already on your wall?; NEW INSTALLATION; New Installation; NOT MOUNTED
Sensi Lite smart thermostat | INSTALLATION GUIDE 3 STEP 1 Add your thermostat to the Sensi app INSTALLATION Once you have downloaded the Sensi app and have created an account, you are ready to install the thermostat to your wall and connect it to Wi-Fi. If there are no registered thermostats, tap th...
Page 4 - Remove the old thermostat from your wall; INSTALLING THE SENSI THERMOSTAT
Sensi Lite smart thermostat | INSTALLATION GUIDE 4 STEP 3 Remove the old thermostat from your wall GATHER TOOLS AND PACKAGE CONTENTS Gather all the necessary tools for installation. TURN OFF POWER Turn off the power to your heating and air conditioning system before handling your thermostat wires. R...
Page 5 - Secure your new thermostat base; Use PIN
Sensi Lite smart thermostat | INSTALLATION GUIDE 5 FURNACE TYPE Select what type of system you have. LABEL YOUR WIRES Before you disconnect your wires, label your wires using the label stickers provided one wire at a time. DISCONNECT WIRES AND REMOVE BASE After all of your wires are labeled, remove ...
Page 6 - Connecting to Wi-Fi and registering; troubleshooting section on pg. 7 for more information.
Sensi Lite smart thermostat | INSTALLATION GUIDE 6 STEP 6 Connecting to Wi-Fi and registering your thermostat Pro Tip: If the thermostat screen is not turning on after wiring installation, the batteries may not be installed properly. See the troubleshooting section on pg. 7 for more information. WI-...
Page 7 - • Ensure that there is power to your HVAC system and there is no error; Connecting to Wi-Fi troubleshooting; • Reboot your smartphone.; Reconnecting to Wi-Fi; TROUBLESHOOTING
Sensi Lite smart thermostat | INSTALLATION GUIDE 7 Why isn’t my heating/cooling turning on? • Ensure that there is power to your HVAC system and there is no error code on your control board indicating a system issue. ― If there is an error code or no power to your system, contact an HVAC professiona...
Page 8 - HVAC configuration menu; Forgot Password; on the login screen of
Sensi Lite smart thermostat | INSTALLATION GUIDE 8 HVAC configuration menu If you want to check that your thermostat’s HVAC settings were configured correctly or you’re experiencing a system issue, refer to the chart for equipment descriptions and options. Learn more about how to properly configure ...
Page 9 - Installing multiple thermostats; For iOS: Tap the person icon in the upper right corner.; Technical support; NOTES
Sensi Lite smart thermostat | INSTALLATION GUIDE 9 Installing multiple thermostats If you are installing more than one thermostat, follow the same installation process in the Sensi app. Once you have one thermostat installed, open the Sensi app on your phone. At the main screen, press the + sign to ...