Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your EARU Electric WiFi Thermostat. This smart thermostat is designed to control water heating, electric floor heating, or gas boiler systems, offering convenient temperature management through its LCD display, mobile application, and voice assistants like Google Assistant and Amazon Alexa.
Product Specifications
| Feature | Detail |
|---|---|
| Material | Anti-flammable PC |
| Voltage | AC 100-240V, 60Hz |
| Max. Current Load | 3A (resistive for plumbing/gas boiler), 16A (electric heating) |
| Temperature Accuracy | ±1°C |
| Max Temperature Setting | 15~95°C |
| Item Dimensions | 86mm (W) x 86mm (H) x 40mm (D) |
| Power Consumption | <1W |
| Temperature Sensor | NTC |
| Display Type | LCD |
| Origin | Mainland China |
| Certification | CE |
| External Sensor Temp. Limit | 35~60°C |
| Temperature Control Range | 0.5~10°C |
Packing List
The product package includes the following items:
- 1 x Thermostat Unit
- 1 x Sensor Probe (included only with 16A electric floor heating models)
- 2 x Installation Screws
- 1 x User Manual
Note: The 16A model is designed for electric heating systems, while the 3A model is for water heating and gas boiler systems. Ensure you have the correct model for your application.
Setup and Installation
Before installation, ensure the power supply is disconnected to prevent electric shock. Installation should be performed by a qualified electrician.
1. Unboxing and Component Overview
The video below demonstrates the unboxing and shows the main components of the thermostat.
2. Wiring Diagrams
Refer to the following diagrams for correct wiring based on your heating system type. Always ensure proper electrical connections to avoid damage or hazards.
Important: For 3A models (Water Heating/Gas Boiler), the sensor is typically not included as it's often an internal sensor or integrated with the boiler. For 16A Electric Heating models, an external sensor cable is usually provided and required for floor temperature sensing.
3. Mounting the Thermostat
After wiring, secure the thermostat to the wall using the provided screws. Ensure it is firmly attached and the connections are not strained.
4. App Pairing (Tuya Smart / Smart Life)
To enable smart control, download the Tuya Smart or Smart Life app from your smartphone's app store. Follow the in-app instructions to add your thermostat. The video above also demonstrates the pairing process.
Operating Instructions
1. Thermostat Interface Overview
- Time Display: Shows current time.
- Mode/Power Key (M): Press to activate auto mode or switch between modes. Long press to enter programming settings.
- Setting Temperature: Displays the target temperature.
- Room Temperature Display: Shows the current ambient temperature.
- Keying (Up arrow): Adjusts parameters upwards.
- Subtraction Key (Down arrow): Adjusts parameters downwards.
- Mode Icon: Indicates the current operating mode (e.g., Auto).
- Periods: Shows the active programming period.
2. Setting Heating Schedule
The thermostat allows you to set a heating schedule for weekdays and rest days. You can choose between 5+2 days, 6+1 days, or 7 days programming modes.
- Long press the M button to enter programming settings.
- Use the Up and Down arrow keys to navigate through options.
- Select "Week programming settings" and choose your desired mode (5+2, 6+1, or 7 days).
- Configure the start time and target temperature for each period.
- Long press M to save and exit.
Alternatively, use the Tuya Smart/Smart Life app for easier scheduling configuration, as shown in the video and detailed app settings images.
3. Child Lock Function
Activate the child lock to prevent unauthorized changes to the thermostat settings.
This feature can typically be enabled or disabled through the thermostat's advanced settings menu or directly via the mobile app.
4. Adjusting Backlight and Button Sound
You can customize the backlight brightness and enable/disable button sounds for a personalized experience.
To adjust these settings, navigate to the thermostat's system settings or use the corresponding options in the Tuya Smart/Smart Life app.
5. Advanced App Settings
The mobile app provides extensive customization options for your thermostat, including temperature correction, sensor limits, frost protection, and more.
Explore the "Settings" menu in the app to access options such as:
- Workday setting (5+2, 6+1, 7 days)
- Week programming settings
- Voice (enable/disable voice control features)
- Backlight brightness
- Temperature correction (±1°C)
- Max setting temperature (up to 95°C)
- Output startup temperature difference (0.5°C, 1°C, 1.5°C)
- Sensor temperature limit (up to 60°C)
- Sensor Choose (Inside/External)
- Frost protection function (On/Off)
- Output main inverse
- Reset to factory settings
Maintenance
To ensure optimal performance and longevity of your EARU Electric WiFi Thermostat, follow these maintenance guidelines:
- Cleaning: Gently wipe the thermostat's screen and body with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or excessive moisture, as these can damage the device.
- Dust Accumulation: Periodically check for dust accumulation around the thermostat's vents and sensor areas. Use a soft brush or compressed air to carefully remove any dust that might obstruct airflow or sensor readings.
- Software Updates: Keep the Tuya Smart or Smart Life app updated to the latest version to benefit from new features, bug fixes, and security enhancements. The app will usually notify you of available updates.
- Power Cycle: If the thermostat becomes unresponsive, try turning off the power to your heating system at the circuit breaker for a few minutes, then restore power. This can often resolve minor software glitches.
Troubleshooting
If you encounter issues with your thermostat, refer to the following common problems and solutions:
- Thermostat not turning on:
- Check the main power supply to your heating system and ensure the circuit breaker is on.
- Verify that the thermostat is correctly wired according to the installation diagrams.
- No heating/cooling:
- Ensure the thermostat is set to the correct mode (heating/cooling) and the target temperature is above/below the current room temperature.
- Check the wiring connections to your heating system.
- Verify that the heating system itself is functioning correctly.
- WiFi connection issues:
- Ensure your WiFi network is active and the signal strength is adequate at the thermostat's location.
- Restart your WiFi router.
- Try re-pairing the thermostat with the Tuya Smart/Smart Life app.
- Confirm you are using a 2.4GHz WiFi network, as most smart home devices do not support 5GHz.
- Inaccurate temperature readings:
- Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor.
- Use the "Temperature correction" feature in the app settings to calibrate the sensor if necessary.
- For floor heating, ensure the external sensor is correctly installed and functioning.
- Child Lock not working:
- Verify that the child lock feature is enabled in the thermostat's settings or via the mobile app.
If the problem persists after trying these steps, contact customer support for further assistance.
User Tips
- Optimize Scheduling: Take advantage of the 6-period weekday and 2-period rest day scheduling to match your daily routine and save energy. Adjust temperatures lower when you're away or asleep.
- Smart Integration: Connect your thermostat to Google Assistant or Amazon Alexa for convenient voice control. This allows you to adjust temperatures hands-free.
- Frost Protection: Utilize the "Low Temperature Protection" feature, especially in colder climates or during extended absences, to prevent water pipes from freezing.
- Radiator Control: While primarily for floor heating and boilers, this thermostat can be integrated with systems using thermostatic radiator valves (TRVs). Ensure compatibility and proper setup for effective radiator control.
- App Customization: Explore the advanced settings in the Tuya Smart/Smart Life app to fine-tune parameters like temperature correction, sensor limits, and startup differences for optimal comfort and efficiency.
Warranty and Support
Your EARU Electric WiFi Thermostat comes with a standard manufacturer's warranty. Please refer to the product packaging or the seller's website for specific warranty terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt and product model information handy when seeking support.