1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Ecobuy Smart WiFi Thermostat. This series of thermostats is designed for various floor heating applications, including electric floor heating, water heating systems, and gas boilers. It supports remote control via smartphone apps and voice commands, offering convenient temperature regulation for your home or office.
The thermostat features a colorful capacitive touch LCD screen, providing a user-friendly interface. Key functionalities include precise temperature measurement, weekly programming, child lock, and weather forecast display (WiFi version only).
2. Package Contents
Please check the package for the following items:
- Thermostat Unit
- External Sensor (for models V4W.716 and V4W.703)
- Mounting Screws
- User Manual
- Installation Box (if included with specific model variant)
3. Specifications
| Parameter | Specification |
|---|---|
| Brand Name | ecobuy well |
| Model Number | V4W.716, V4.703, V4.723 |
| Product Type | Tuya Wifi Thermostat For Underfloor Heating System |
| Type | Wifi Thermostat Control for floor heating /gas boiler |
| APP Compatibility | Tuya APP or Smart Life |
| Voice Control | Yandex Alice, Amazon Alexa and Google Home |
| Shell Material | Anti-Flammable PC |
| Power Supply | AC100~240V; 50/60Hz |
| Power Consumption | 1W Max (Wi-Fi version 1.5W Max) |
| Load (V4W.716) | 16A |
| Load (V4W.703/V4W.723) | 3A |
| Setting Temp. Range | 5-95 ℃ |
| Floor Limited Range | 5-60 ℃ |
| Temp. Difference | 0.5-10 ℃ (Factory setting ±1℃) |
| Ambient Temperature | -5~50 ℃ |
| Setting Temp. Accuracy | 0.5 ℃ |
| Protection Level | IP20 |
| Certification | CE, ROSH, WEEE |
| Dimensions (Unit: mm) | 86 x 86 x 11.7 (front panel) |
4. Installation
Important Safety Notice: Installation should only be performed by a qualified electrician to prevent electric shock or damage to the device. Ensure power is turned off before installation.
4.1 Mounting Steps
The thermostat adopts a pre-guide and limited snap-fit design for easy mounting.
- Release the front cover by inserting a head screwdriver into the bottom crack.
- Insert the wires and then fix these wires with screws. Suggested wire-stripping length is 7-9mm.
- Mount the backing plate into the wall-cassette, put screws and then fix the thermostat. Make sure that the thermostat is fixed without deformation. Suggested torque is 0.2~0.4N.m (2.0~4.1kgf.cm).
- Re-mount the front cover via snap-fit connection.
4.2 Wiring Diagrams
The thermostat operates in full capacity in areas with an altitude of less than 2500m above sea level. The power rating of the external load should be less than or equal to 80% of the thermostat's rated power in areas with an altitude of 2500m to 4200m.
5. User Interface and Controls
The thermostat features a clear LCD display and capacitive touch buttons for easy interaction.
Display Symbols:
- Wi-Fi: Indicates Wi-Fi connection status.
- Child-lock: Indicates if child lock is active.
- Week Display: Shows the current day of the week.
- Time Display: Shows the current time.
- Frost Protection: Indicates if frost protection is active.
- Weather Forecast: (WiFi version only) Displays weather conditions (Sunny, Cloudy, Rainy, Snowy).
- Sensing Temperature: Shows current room temperature.
- Setpoint Temperature: Shows the desired temperature.
- Heating On: Indicates when the heating system is active.
- Mode: Displays the current operating mode (Manual, Auto, Temporary).
- Room Sensor / Floor Sensor: Indicates which sensor is currently active for temperature measurement.
Buttons:
- M: Mode/Menu button.
- ▲: Up button (increase value, navigate up).
- ▼: Down button (decrease value, navigate down).
- ⏻: Power on/off button.
6. Operation
6.1 Power On/Off
Press the ⏻ button shortly to turn the thermostat on or off.
6.2 Time Setting
Press M + ▲ for 3 seconds to enter time setting mode. Use M to select the item to modify (date, clock), and ▲ or ▼ to change the value. Finally, press ⏻ to quit.
6.3 Temperature Setting
Press ▲ or ▼ shortly to change the setting temperature by 0.5°C increments.
6.4 Child Lock
To activate child lock, press ▲ + ▼ for 3 seconds. When locked, no operations can be performed on the thermostat. Repeat the action to deactivate.
6.5 Temperature Control Modes
Press M shortly to switch between manual and auto modes. Press ▲ or ▼ shortly to enter temporary mode when in auto mode.
- Manual Mode: The thermostat operates based on the manually set temperature, disconnecting from the auto mode schedule.
- Auto Mode: Utilizes weekly programming, allowing up to 6 heating events to be set per day. Heating events, weekdays, and temperatures can be customized based on personal routines.
- Temporary Mode: The thermostat operates based on a manually set temperature temporarily and then reverts to auto mode for the next scheduled event.
6.6 Auto-Mode Setting (Weekly Programming)
Press M for 3 seconds to edit auto-mode settings. Use M to select the item to modify (date, clock, temperature), and ▲ or ▼ to change the value. Finally, press ⏻ to quit.
You can set up to 6 events per day for weekdays and weekends:
| Event | Description | Default Time | Default Temp. |
|---|---|---|---|
| 1 | Wake up | 06:00 | 20°C |
| 2 | Leave (am) | 08:00 | 15°C |
| 3 | Return (am) | 11:30 | 15°C |
| 4 | Leave (pm) | 12:30 | 15°C |
| 5 | Return (pm) | 17:00 | 22°C |
| 6 | Sleep | 22:00 | 15°C |
6.7 Advanced Settings (For Professional Technicians)
To access advanced settings, during power-off, press M + ▼ shortly. Then, re-press M to switch to the next mode. Press ⏻ to save and exit advanced setting mode.
| Code | Meaning | Default Value | Range |
|---|---|---|---|
| 1ADJ | Temp. calibration | 0°C | -9.9~9.9°C |
| 2SEN | Sensor selection | IN (Built-in sensor) | IN (Built-in), OUT (Floor sensor), ALL (Both) |
| 3LIT | Floor limited Value | 35°C | 5~60°C |
| 4DIF | Temp. Dif. | ±1°C | 0.5~10°C |
| 5LTP | Frost protection | OFF | ON/OFF |
| 6PRG | Weekly programming setting | 0 (5/2 week mode) | 0 (5/2 week), 1 (6/1 week), 2 (7/0 week) |
| 8DLY | Delay time of outputs | 0 | 0~5min |
| 9HIT | Temp. upper limit | 50°C | 5~95°C |
| AFAC | Reset | - | Press ▲ for 3 seconds to reset |
7. Smart Features
7.1 App Remote Control
Control your thermostat remotely using the free Smart Life or TuyaSmart app on your smartphone or tablet. This allows you to adjust settings from anywhere at any time.
7.2 Voice Control
The thermostat is compatible with popular voice assistants such as Amazon Alexa, Google Home, and Yandex Alice. Simply use voice commands to control your heating system.
7.3 Weather Forecast Display
When connected to Wi-Fi, the thermostat can display the current weather forecast and humidity for your city directly on its screen.
8. Troubleshooting
- Q: Can it work without WiFi?
A: Yes, the thermostat supports manual operation directly on the device even without a WiFi connection. - Q: Can it cool and heat?
A: No, this thermostat is designed for heating systems only. - Q: Is it battery powered?
A: No, the thermostat is powered by AC100-240V. - Q: Does the screen stay on all the time?
A: Yes, the screen can stay on. You can adjust the backlight brightness from 0% to 100%. - Q: Can it be embedded in a wall?
A: Yes, it is designed for embedded installation. A standard 86x86mm concealed box is suitable. - Q: Does it work with 5GHz WiFi?
A: No, the thermostat only supports 2.4 GHz WiFi networks. - Q: Does it have a power failure memory?
A: Yes, it saves your settings and automatically reconnects to the app after a power outage. - Q: Is there any noise when working?
A: No, the thermostat operates quietly. - Q: Sensor Failure (E0/E1 error)?
A: If E0 or E1 error is displayed, the thermostat will remain powered off until the error is resolved.- E0: Built-in sensor is short-circuited or disconnected.
- E1: Floor sensor is short-circuited or disconnected.
9. User Tips
- For optimal smart functionality, ensure your WiFi network is configured to 2.4GHz. If you have a dual-band router, you may need to separate the 2.4GHz and 5GHz bands or ensure your device connects to the 2.4GHz band during setup.
- When embedding the thermostat, use a standard 86x86mm concealed box for a secure and flush fit.
- Take advantage of the weekly programming feature to optimize energy savings by setting different temperatures for various times of the day and week according to your routine.
- The child lock feature is useful to prevent accidental changes to settings, especially in households with young children.
10. Maintenance and Care
To ensure the longevity and proper functioning of your thermostat:
- Clean the screen and body with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Avoid exposing the thermostat to direct sunlight or extreme temperatures.
- Ensure the area around the thermostat is free from obstructions that could affect temperature readings.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official product documentation or contact the seller directly. A detailed user manual in PDF format is available for download: User Manual (PDF).