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Emerson SENSI TOUCH 2 ST76 Series - User Manual

Emerson SENSI TOUCH 2 ST76 Series
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SENSI
TM
TOUCH 2 SMART THERMOSTAT
Installation guide
Models: 1F96U-42WF series, ST76 series
Version: August 2022
©2022 Emerson Electric Co. All rights reserved
R-5556
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Emerson SENSI TOUCH 2 ST76 Series Specifications

General IconGeneral
Product TypeThermostat
Wi-Fi ConnectivityYes
CompatibilityWorks with most HVAC systems
Mobile AppSensi App
Temperature Range45°F to 90°F
Humidity ControlNo
Warranty3 years
ModelST76 Series
TypeTouchscreen
Display TypeTouchscreen
Voice ControlAmazon Alexa, Google Assistant
Energy Saving Features7-day scheduling
Power SourceC-wire required
StagesUp to 2 Heat / 2 Cool
Featuressmart alerts
Remote ControlYes

Summary

Downloading the Sensi App and Creating an Account

Installing the Sensi Thermostat

Step 1: Add Thermostat to Sensi App

Add the Sensi Touch 2 smart thermostat to the Sensi app and select the correct model number.

Not Mounted Installation Path

Full step-by-step process for installing a thermostat not yet mounted on the wall, covering wiring and Wi-Fi.

Is Currently Mounted Installation Path

Steps for thermostats already mounted, focusing on identifying wires and HVAC settings for configuration.

Installing the Sensi Thermostat (Continued)

Step 5 b: Is Currently Mounted Installation

Identify existing wires on a mounted thermostat to configure it correctly for the system type.

Turn Off HVAC Power

Instruction to turn off power to the HVAC system before handling thermostat wires for safety.

Step 6: Connecting to Wi-Fi and Registering

Steps to connect the installed Sensi thermostat to Wi-Fi and complete its registration.

Step 5 a: Connect Wiring and Cover (Not Mounted)

Connecting wires to the new base, attaching the cover, and turning power back on for 'Not Mounted' setup.

Troubleshooting

Heating;Cooling Not Turning On

Troubleshooting steps for heating/cooling system not working, checking power, breakers, and wiring.

Wi-Fi Connection Troubleshooting

Tips for resolving issues when connecting the Sensi thermostat to a Wi-Fi network.

Troubleshooting (Continued)

Blank or Flashing Display Issues

Diagnosing blank or flashing thermostat displays, often related to insufficient power or c-wire connection.

No C-Wire Connection

Guidance for installing without a c-wire, including options like external transformers or heat-only systems.

C-Wire Connection Troubleshooting

Steps to verify c-wire connection at the thermostat and system control board, including voltage checks.

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