Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of your Emerson Sensi ST55U Smart Wi-Fi Thermostat. Please read this manual thoroughly before beginning installation or operation to ensure proper functionality and to avoid potential issues.
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The Emerson Sensi ST55U is a smart Wi-Fi enabled thermostat designed to provide precise temperature control for your home. It features a clear display and intuitive controls, allowing for easy adjustment of heating and cooling settings. Remote control is available via a dedicated mobile application.

Figura 1: Davant view of the Emerson Sensi ST55U Thermostat display. The screen shows the current time (6:10 pm), Wi-Fi signal strength, battery level, room temperature (72°), set temperature (71°), and the current mode (Cooling). Below the main display are options for Mode (Heat, Off, Cool), Fan (Auto, On), and Schedule (On, Off). A 'Menu' button and up/down arrows are visible on the right side for navigation.
Característiques principals:
- Connectivitat Wi-Fi per a accés remot
- Programmable temperature control
- Clear LED/LCD display with backlight
- App control for convenient management
- Hardwired power source
Configuració
1. Installation (Wiring)
The ST55U thermostat is designed for wall-mount installation and requires a hardwired connection. Ensure power to your HVAC system is turned off at the circuit breaker before beginning any wiring. Refer to the detailed wiring diagrams provided in the packaging for your specific HVAC system configuration. A common wire (C-wire) is typically required for continuous power and Wi-Fi functionality.
2. Descàrrega de l'aplicació i creació de compte
Download the Sensi mobile application from your device's app store (iOS or Android). Follow the on-screen prompts to create a new account or log in if you already have one.
3. Connexió Wi-Fi
- On the thermostat, navigate to the Wi-Fi setup menu using the 'Menu' button and arrow keys.
- Seleccioneu la vostra xarxa Wi-Fi domèstica a la llista.
- Introduïu la vostra contrasenya de Wi-Fi.
- Confirm the connection. The Wi-Fi icon on the thermostat display should indicate a successful connection.
- Open the Sensi app and follow the instructions to add your new thermostat to your account.
Instruccions de funcionament
Ajust de la temperatura
Use the Up and Down arrow buttons on the right side of the thermostat or the Sensi app to adjust the desired set temperature. The current room temperature and the set temperature will be displayed on the screen.
Changing Mode (Heat/Cool/Off)
Press the 'Mode' button on the thermostat or select the desired mode within the Sensi app. Available modes typically include:
- Calor: Activa el sistema de calefacció.
- Genial: Activa el sistema de refrigeració.
- Apagat: Apaga tant els sistemes de calefacció com els de refrigeració.
Fan Settings (Auto/On)
Press the 'Fan' button on the thermostat or adjust the fan setting in the Sensi app. Options include:
- Automàtic: El ventilador només funciona quan el sistema de calefacció o refrigeració està en funcionament. Aquesta és la configuració recomanada per a l'eficiència energètica.
- A: El ventilador funciona contínuament, independentment de si el sistema de calefacció o de refrigeració està actiu.
Programació
The ST55U allows for programmable scheduling to automatically adjust temperatures based on your daily routine. Access the 'Schedule' menu on the thermostat or through the Sensi app to create or modify schedules. You can set different temperatures for various times of the day and days of the week.
Manteniment
Neteja
Per netejar el termòstat, netegeu suaument l'exterior amb un drap suau i sec.amp cloth. Avoid using abrasive cleaners or solvents, as these can damage the display or finish.
Canvi de bateria
While the ST55U is primarily hardwired, it may use AAA batteries for backup or specific functions. If a low battery indicator appears on the display, replace the 1 AAA batteries as instructed in the full product guide or on the manufacturer's weblloc.
Resolució de problemes
- El termòstat no respon:
Check if the thermostat has power. Ensure the circuit breaker for your HVAC system is on. If batteries are used, replace them.
- Desconnexió Wi-Fi:
Verify your home Wi-Fi network is operational. Restart your Wi-Fi router. Reconnect the thermostat to Wi-Fi through the setup menu or Sensi app. Ensure the thermostat is within range of your Wi-Fi signal.
- Lectures de temperatura incorrectes:
Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its temperature sensor. Calibrate the sensor if an option is available in the advanced settings or app.
- Heating/Cooling System Not Activating:
Check the thermostat mode (Heat, Cool, Off) and set temperature. Ensure the system switch on your HVAC unit is set correctly. If the issue persists, consult a qualified HVAC technician.
Especificacions
| Marca | Emerson |
| Número de model | ST55U |
| Tecnologia de connectivitat | Wi-Fi |
| Font d'alimentació | Cablejat |
| Tipus de control de temperatura | Programable |
| Mètode de control | App |
| Tipus de visualització | LED/LCD |
| Tipus de muntatge | Muntatge de paret |
| Dimensions | 6.42 x 4.76 x 1.89 polzades |
| Pes de l'article | 1.22 lliures |
| Bateries | 1 AAA batteries required (for backup/specific functions) |
| Especificació Met | Energy Star |
Garantia i Suport
Specific warranty details for the Emerson Sensi ST55U Smart Wi-Fi Thermostat are not provided in this document. For comprehensive warranty information, technical support, or to access additional resources, please visit the official Emerson Sensi weblloc web o contacteu directament amb el servei d'atenció al client. Conserveu el rebut de compra com a comprovant de compra per a reclamacions de garantia.





