1. Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of your Decdeal Wi-Fi Programmable Smart Thermostat. Designed for gas boiler heating systems, this thermostat offers convenient temperature control via its LCD touchscreen, mobile application, and voice commands. Please read this manual thoroughly before installation and use to ensure proper functionality and safety.

Figure 1: Decdeal Wi-Fi Programmable Smart Thermostat (White Model)
2. Característiques del producte
- LCD Display with Backlight: Clear and easy-to-read data, even in low light conditions.
- High-Quality Thermostat: Specifically designed for gas boiler heating systems with responsive touch keys.
- Weekly Programmable: Features a 5+2 system with six programmable periods to optimize comfort and energy savings.
- Alta precisió: Maintains temperature with a precision of 0.5°C.
- Control remot mitjançant l'aplicació: Conveniently manage your thermostat using your mobile device.
- Compatibilitat de control de veu: Works with Amazon Echo, Alexa, Google Home, and IFTTT.

Figure 2: Key Features of the Decdeal Smart Thermostat

Figura 3: Integració de la llar intel·ligent

Figure 4: Voice Control Functionality
3. Què hi ha a la caixa
- Decdeal Wi-Fi Programmable Smart Thermostat
- Cargols de muntatge
- Manual d'usuari en anglès

Figura 5: Contingut del paquet
4. Especificacions
| Característica | Detall |
|---|---|
| Marca | Decdeal |
| Número de model | XGJ3167046817164KD |
| Dimensions del producte | 3.8P x 9l x 9h cm |
| Color | Blanc |
| Tipus de material | Acrilonitril butadiè estirè (ABS) |
| Tecnologia de connectivitat | Wi-Fi (només 2.4 GHz) |
| Font d'alimentació | Wired Electric (240 Volt) |
| Tipus de visualització | LCD amb llum de fons |
| Mida de la pantalla | 5 centímetres |
| Mètode de control | Aplicació, comandament a distància, tàctil, veu |
| Tipus de muntatge | Muntatge de paret |
| Tipus de control de temperatura | Programable |
| Ús específic | Boiler Heating Systems (Model GC) |

Figura 6: Dimensions del producte
5. Configuració
5.1. Nota important de compatibilitat
This thermostat is Model GC, specifically designed for heating systems with gas boilers. Ensure your heating system is compatible before installation. The installation box should be a square 86x86mm or European round 60mm (not included).
5.2. Wiring Instructions (Model GC - Gas Boiler)
ADVERTIMENT: Electrical installation should be performed by a qualified professional. Always turn off the main power supply before beginning any wiring work to prevent electric shock.
- Connect the clean contacts to terminals 1 and 2.
- Connect the neutral wire and live wire to terminals 3 and 4.
- Connect the temperature sensor to terminals 5 and 6 (if applicable).
Refer to the detailed wiring diagram in the included English User Manual for visual guidance.
5.3. Connexió a l'aplicació
To connect your thermostat to the mobile app (e.g., Smart Life or Tuya Smart), follow these steps:
- Ensure your Wi-Fi network is 2.4 GHz. This product does not support 5G networks.
- Download the appropriate app (e.g., Smart Life or Tuya Smart) from your mobile device's app store.
- Registreu-vos o inicieu sessió al vostre compte.
- On the thermostat, press and hold the "Down" button (triangle icon) for approximately 8 seconds until the Wi-Fi indicator on the display blinks rapidly, indicating pairing mode.
- In the app, tap "Add Device" or the "+" icon. The app should automatically discover the thermostat. If not, select "Small Home Appliances" then "Thermostat" or "HVAC" and follow the in-app instructions.
- Enter your 2.4 GHz Wi-Fi network password when prompted.
- Confirm the indicator is blinking in the app and proceed with the connection.
- Once connected, the thermostat will appear in your device list, and you can control it remotely.
For a visual guide on app connection, please refer to the video below:
Video 1: Demonstrating the Wi-Fi connection process for the Decdeal Smart Thermostat with a mobile app.
For additional support and an Italian language manual, you can visit this link: http://qr71.cn/o1gyMk/qVY1nSe
6. Instruccions de funcionament
6.1. Control manual
The thermostat features a clear LCD display and intuitive touch buttons for direct control:

Figure 7: Thermostat Button Layout and Display Indicators
- Power Button (top right): Press to turn the thermostat ON or OFF.
- Botó de mode (M): Cycles through different operating modes (e.g., Manual, Programmed).
- Clock Button (Clock icon): Used for setting the time and accessing programming settings.
- Up Button (Triangle pointing up): Increases the temperature setting or navigates menu options.
- Down Button (Triangle pointing down): Decreases the temperature setting or navigates menu options.
To adjust the temperature manually, press the Up or Down buttons. The display will show the current set temperature. To switch between manual and programmed modes, use the Mode button.
6.2. Control i programació d'aplicacions
The mobile app provides comprehensive control and scheduling capabilities:
- Ajust remot de la temperatura: Change the temperature from anywhere using your smartphone.
- Weekly Programming (5+2 System): Set up to six distinct time periods for weekdays (Monday-Friday), Saturday, and Sunday, each with its own temperature setting. This maximizes comfort and energy efficiency.
- Selecció del mode: Easily switch between manual, automatic (programmed), and other modes.
- Configuració avançada: Access additional settings and features not available directly on the thermostat.

Figura 8: Interfície de control de l'aplicació
7. Manteniment
- Neteja: Wipe the thermostat's surface with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the display or casing.
- Eviteu les obstruccions: Ensure no objects block the thermostat, as this can affect its temperature readings.
- Font d'alimentació: The thermostat requires a constant 240V wired electric supply. It does not operate on batteries.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Thermostat does not power on after connection. | Cablejat incorrecte o sense font d'alimentació. | Verify wiring according to Section 5.2. Ensure main power supply is ON. If unsure, consult a qualified electrician. |
| No es pot connectar a la Wi-Fi ni a l'aplicació. | Incorrect Wi-Fi frequency (5G instead of 2.4 GHz) or incorrect pairing procedure. | Ensure your router is broadcasting a 2.4 GHz Wi-Fi signal and your phone is connected to it during setup. Follow app connection steps in Section 5.3 carefully. Reset the thermostat if necessary (refer to app instructions for reset). |
| La lectura de temperatura sembla inexacta. | Thermostat location or external factors. | Assegureu-vos que el termòstat no estigui exposat a la llum solar directa, corrents d'aire ni fonts de calor (per exemple,amps, electrodomèstics) que podrien afectar el seu sensor. |
| El sistema de calefacció no respon al termostat. | Wiring issue, boiler problem, or incorrect mode. | Check wiring connections. Ensure the thermostat is in the correct operating mode (e.g., heating mode, not off). Verify your boiler is functioning correctly. |
9. Garantia i Suport
For warranty information, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support or further assistance, please contact Decdeal customer service through the official channels provided with your product or on the Decdeal weblloc.