1. Introduction
The GIRIER Tuya Smart WiFi Thermostat is designed to provide intelligent temperature control for various heating systems, including gas boilers, electric floor heating, and water floor heating. It features an elegant LCD touch screen, app remote control, voice control compatibility with Amazon Alexa and Google Assistant, programmable modes, and energy-saving capabilities.


2. Setup and Installation
2.1. Wiring Diagrams
Ensure power is disconnected before attempting any wiring. Consult a qualified electrician if you are unsure about the installation process. The thermostat supports different heating systems. Please refer to the appropriate diagram for your setup.
For Gas Boiler (3A)

Important: If your actuator is a 2-wire mode and normally closed model, connect 1(close) and 3(N). If normally open model, connect 2(open) and 3(N). If your actuator is a 3-wire model, connect 1(close), 2(open) and 3(N). Please read the wiring diagram carefully before connecting. Incorrect wiring can cause a short circuit and damage your gas boiler board.
For Electric Floor Heating (16A)

For Water Heating (3A)

2.2. Physical Installation Steps
Follow these steps to physically install the thermostat:
- Remove the mounting plate by rotating the LCD part counter-clockwise.
- Connect the power supply and load wires into the appropriate terminals as per the wiring diagram for your heating system.
- Fix the mounting plate into the wall using screws.
- Fasten the body of the thermostat onto the mounting plate by rotating it clockwise until it clicks into place.

2.3. App Pairing and Wi-Fi Connection
To connect your thermostat to the Smart Life or TuyaSmart app:
- Download and install the Smart Life or TuyaSmart app on your iOS or Android device.
- Ensure your Wi-Fi network is 2.4GHz. The thermostat does not support 5GHz networks.
- Open the app and add a new device. Select 'Thermostat' from the list of devices.
- Follow the in-app instructions to reset the device and confirm the indicator is blinking rapidly.
- Enter your 2.4GHz Wi-Fi network name and password.
- The app will then search for and add the device. Once added, you can control the thermostat remotely.
This video illustrates the process of connecting the thermostat to the Smart Life app and integrating it with Amazon Alexa for voice control.
3. Operation
3.1. LCD Touch Screen Overview

3.2. App Remote Control
Control your thermostat from anywhere using the Smart Life or TuyaSmart app. You can adjust temperature, change modes, and set schedules remotely.

3.3. Voice Control
Integrate your thermostat with Amazon Alexa or Google Assistant for convenient voice commands. For example, say "Alexa, turn on the thermostat" or "Hey Google, set thermostat to 22 degrees Celsius."

3.4. Programming Modes
The thermostat offers flexible programming options to suit your lifestyle and save energy. You can choose from 5+2, 6+1, or 7-day programmable modes.

3.5. Holiday Mode
Activate Holiday Mode to set a countdown plan for your heating system while you are away. The thermostat will automatically return to the weekly program mode once the holiday period ends.

3.6. Child Lock
Enable the Child Lock feature to prevent accidental changes to settings by children, ensuring consistent temperature control and avoiding unnecessary energy consumption.

3.7. Power Failure Recovery
The thermostat is equipped with a memory function that retains your settings in case of a power outage, ensuring your heating system resumes operation with the last configured settings once power is restored.

3.8. Sharing & Group Control
Share control of your smart thermostat with family members through the app, simplifying management for multiple users. You can also group multiple thermostats for centralized control.

4. Maintenance
To ensure optimal performance and longevity of your GIRIER Smart WiFi Thermostat:
- Regularly wipe the LCD screen with a soft, dry cloth to remove dust and smudges. Avoid using abrasive cleaners or solvents.
- Keep the thermostat free from excessive dust and moisture.
- Do not attempt to open or repair the device yourself. Refer to qualified personnel for any service needs.
5. Troubleshooting
5.1. Common Issues and Solutions
- Thermostat not connecting to Wi-Fi:
- Ensure your Wi-Fi network is 2.4GHz. The thermostat does not support 5GHz.
- Check if the Wi-Fi signal is strong enough at the thermostat's location.
- Verify that the Wi-Fi password entered in the app is correct.
- Try resetting the thermostat and re-pairing it with the app.
- Thermostat not responding to app/voice commands:
- Check if the thermostat is connected to Wi-Fi (Wi-Fi icon on display should be solid).
- Ensure your smartphone has an active internet connection.
- For voice control, verify that the thermostat is correctly linked to your Amazon Alexa or Google Home account in the Smart Life/TuyaSmart app.
- Incorrect temperature readings:
- Ensure the thermostat is not exposed to direct sunlight, drafts, or other heat sources that could affect its internal sensor.
- If an external sensor is used, check its placement and connection.
- Heating system not turning on/off:
- Verify the wiring connections are secure and correct for your heating system type (Gas Boiler, Electric Floor, Water Heating).
- Check the thermostat's mode (Manual, Auto, Program) and set temperature.
6. Specifications
| Feature | Detail |
|---|---|
| Model Name | WiFi Smart Thermostat |
| Brand Name | GIRIER |
| Power Source | AC |
| Rated Voltage | 90~240V |
| Voltage Frequency | 50/60Hz |
| Rated Current | 16A (Electric Heating), 3A (Water Heating/Gas Boiler) |
| Temperature Control Range | 0~70℃ |
| Control Accuracy | ±0.5℃ |
| Factory Settings | 5~35℃ |
| WiFi Frequency | 2.4GHz |
| WiFi Protocol | IEEE 802.11 b/g/n |
| WiFi Security Mechanism | WEP/WPA-PSK/WPA2-PSK |
| Support System | iOS/Android |
| App | TuyaSmart/Smart Life |
| Voice Control Compatibility | Amazon Alexa, Google Home |
| Certification | CE, RoHS |
| Dimensions (Thermostat) | 94.0mm (3.70in) x 94.0mm (3.70in) x 22.0mm (0.87in) |
| Dimensions (Mounting Plate) | 60.0mm (2.36in) x 50.0mm (1.96in) |
| Weight | 0.21 kg |

7. User Tips
- For optimal Wi-Fi connectivity, ensure your router is within a reasonable range and configured to use a 2.4GHz band.
- When using voice commands, speak clearly and ensure your smart speaker (Alexa/Google Home) is within listening range.
- Utilize the programmable modes to set different temperatures for various times of the day and week to maximize energy savings.
- If you encounter issues with indicator lights (e.g., red instead of green), double-check all wiring connections and consult the troubleshooting section.
8. Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please contact GIRIER Official Store customer service. Refer to your purchase documentation for specific warranty terms and contact information.