1. Introduction
The Ecobuy V9BW is a battery-powered Wi-Fi thermostat designed for controlling gas boilers with dry contact signal inputs. It offers smart temperature management through a mobile application and voice assistants, providing comfort and energy efficiency for your home heating system. Its elegant design with a pure white or black LED backlight and glass panel blends seamlessly with any decor.
Ecobuy V9BW Thermostat with mobile app interface and smart home compatibility logos.
2. Safety Information
- Always disconnect power to the boiler before installation or maintenance to prevent electrical shock.
- Installation should be performed by a qualified electrician or heating technician.
- Ensure the thermostat is powered by 3 x 1.5V AA alkaline batteries only. Do not use rechargeable batteries or other power sources.
- Keep the device away from water and high humidity environments.
- Do not attempt to disassemble or repair the thermostat yourself. Contact support for assistance.
- The housing material is Anti-Flammable PC, rated UL94 V-0 for enhanced safety.
UL94 V-0 Fire Rating indicates high flame retardancy.
3. Package Contents
Please check the package for the following items:
- Ecobuy V9BW Smart Wifi Thermostat
- User Manual
- Mounting Screws (typically included for installation)
4. Product Overview
4.1 Key Features
- Battery Powered: Operates on 3 x 1.5V AA alkaline batteries, ideal for installations without AC power.
- Wi-Fi Connectivity: Connects to your home Wi-Fi (2.4GHz) for remote control via Tuya Smart/Smart Life APP.
- Voice Control: Compatible with Amazon Alexa and Google Assistant.
- Precise Temperature Control: Temperature detection accuracy up to 0.1℃, with a settable hysteresis from 0.1℃ to 10℃ (factory default 0.5℃).
- Multiple Operating Modes: Manual, Auto (programming), Temporary Override, and ECO modes.
- Weekly Programming: Supports up to 6 time periods per day for 7 days a week, with copyable schedules.
- Anti-Frost Protection: Automatically activates heating if room temperature drops below 5℃.
- Child Lock: Prevents unauthorized changes to settings.
- Low Battery Reminder: Notifies you via the thermostat and app when battery power is below 20%.
- Family Sharing: Allows sharing device control with family members through the app.
- Data Statistics: Real-time and historical temperature and relay switch data available in the app.
Overview of the thermostat's main functions.
4.2 Thermostat Interface and Buttons
Detailed view of the thermostat's display, buttons, and dimensions.
- Wi-Fi Status Icon: Indicates Wi-Fi connection status.
- Heating Icon: Shows when the boiler is actively heating.
- Mode Icons: Manual, Auto, Temporary Override, ECO.
- Child Lock Icon: Indicates if Child Lock is active.
- Low Battery Icon: Warns of low battery power.
- Room/Set Temperature Display: Shows current room temperature and set temperature.
- Mode Button: Cycles through operating modes.
- Up/Down Buttons: Adjust temperature settings or navigate menus.
- Power Button: Turns the thermostat On/Off.
5. Setup
5.1 Physical Installation and Wiring
- Power Off: Ensure the main power to your gas boiler is turned off before beginning installation.
- Mounting: Mount the thermostat on a wall at an appropriate height (typically 1.5 meters from the floor) using the provided screws.
- Wiring: The V9BW thermostat is compatible with dry contact signal control boilers. Connect the boiler's control wires to the COM and NO terminals on the thermostat's back panel. Refer to the diagram below.
- Battery Insertion: Insert 3 x 1.5V AA alkaline batteries into the battery compartment. Ensure correct polarity.
- Power On: Restore power to your gas boiler. The thermostat display should light up.
Wiring diagram for gas boiler connection and battery placement.
5.2 App Connection (Tuya Smart / Smart Life)
- Download App: Download the 'Tuya Smart' or 'Smart Life' app from your smartphone's app store (iOS or Android).
- Register/Login: Create an account or log in to your existing account.
- Add Device: In the app, tap '+' to add a new device. Select 'Small Home Appliance' -> 'Thermostat' or use the auto-scan feature.
- Wi-Fi Pairing: Follow the in-app instructions to connect the thermostat to your 2.4GHz Wi-Fi network. This usually involves putting the thermostat into pairing mode (often by holding a button until the Wi-Fi icon flashes).
- Device Naming: Once connected, you can name your thermostat for easy identification.
Remote control via Tuya Smart / Smart Life app.
6. Operating Instructions
6.1 Mode Selection
The thermostat offers four operating modes:
- Manual Mode: Set a desired temperature manually. The thermostat will maintain this temperature until changed.
- Auto Mode (Programming Mode): Follows a pre-set weekly schedule.
- Temporary Override Mode: Temporarily adjusts the temperature in Auto Mode. The thermostat will revert to the schedule at the next programmed event.
- ECO Mode: An energy-saving mode that can reduce energy consumption by up to 20%.
Press the 'Mode' button on the thermostat or select the desired mode in the app to switch between them.
Available operating modes for the thermostat.
6.2 Weekly Daily Programming (Auto Mode)
In Auto Mode, you can set a customized temperature plan for each day of the week. The app allows for up to 6 events (time periods) per day.
- Open the Tuya Smart/Smart Life app and select your thermostat.
- Navigate to the 'Period Setting' or 'Schedule' section.
- Set desired temperatures and times for 'Waking up', 'Morning', 'Nooning', 'Afternoon', 'Evening', and 'Night' for weekdays and weekends.
- You can easily copy schedules from one day to another.
- Save your settings. The thermostat will now follow this schedule.
App interface for setting weekly temperature programs.
6.3 Voice Control
The thermostat is compatible with Amazon Alexa and Google Assistant. To enable voice control:
- Ensure your thermostat is connected to the Tuya Smart/Smart Life app.
- Link your Tuya Smart/Smart Life account to your Amazon Alexa or Google Home app.
- Discover new devices.
- You can now control your thermostat using voice commands, e.g., "Alexa, set the living room thermostat to 22 degrees," or "Hey Google, turn off the heating."
Voice control integration with popular smart assistants.
6.4 Child Lock
To prevent accidental changes to the thermostat settings, activate the Child Lock feature:
- Activation: Press and hold the 'Down' (V) and 'Up' (^) buttons simultaneously for 3 seconds on the thermostat. A lock icon will appear on the display.
- Deactivation: Repeat the same action (press and hold 'Down' and 'Up' buttons for 3 seconds) to deactivate the Child Lock. The lock icon will disappear.
Activating and deactivating the Child Lock feature.
6.5 Anti-Frost Protection
This feature helps protect your heating system from freezing. If the room temperature drops below 5℃, the thermostat will automatically initiate heating to reach 7℃, regardless of the current mode or set temperature. Once 7℃ is reached, it will return to its previous operating mode.
6.6 Low Battery Reminder
When the battery power falls below 20%, a low battery icon will appear on the thermostat display, and you will receive a notification in the Tuya Smart/Smart Life app. Replace the batteries promptly to ensure continuous operation.
7. Maintenance
- Cleaning: Wipe the thermostat's surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: Replace all three AA alkaline batteries when the low battery indicator appears. Ensure the device is powered off before replacing batteries.
- Software Updates: Keep your Tuya Smart/Smart Life app updated to the latest version for optimal performance and new features.
8. Troubleshooting
- Thermostat not powering on:
- Check if the batteries are inserted correctly and are not depleted. Replace with new alkaline batteries if necessary.
- No Wi-Fi connection:
- Ensure your home Wi-Fi network is 2.4GHz. Check if the Wi-Fi router is working correctly and within range (max 30m indoors). Try restarting the thermostat and your router. Re-attempt the app pairing process.
- Boiler not heating:
- Verify the thermostat is in a heating mode (Manual, Auto, or Temporary Override) and the set temperature is above the current room temperature. Check the wiring connections to the boiler (COM and NO terminals). Ensure the boiler itself is powered on and functioning.
- Inaccurate temperature readings:
- Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor. The temperature hysteresis setting can be adjusted in the app (default 0.5°C, can be set to 0.1°C for finer control, but note increased battery usage).
- Child Lock cannot be deactivated:
- Ensure you are pressing both the 'Down' (V) and 'Up' (^) buttons simultaneously for at least 3 seconds.
9. Specifications
Detailed technical specifications.
| Feature | Specification |
|---|---|
| Model Number | V9BW |
| Power Supply | 3 x 1.5 V alkaline AA batteries (LR6/AA) |
| Wattage | AC100~240V; 50/60Hz (for boiler, not thermostat power) |
| Current Load | 3A |
| Temperature Setting Range | 5~95°C |
| Setpoint Temperature Accuracy | 0.5°C |
| Temperature Hysteresis (Switch Deviation) | 0.1~10°C (Factory setting 0.5°C) |
| Ambient Temperature | -5~50°C |
| Protection Level | IP20 |
| Housing Material | Anti-Flammable PC + ABS |
| Dimensions (W x H x D) | 86 mm x 86 mm x 25.1 mm |
| Wi-Fi Standard | 802.11b/g/n (2.4GHz) |
| Wi-Fi Range | Indoors: ≤ 30 m (varies by environment) |
| Certifications | CE, RoHS |
10. User Tips
- For optimal battery life, consider using the default 0.5°C temperature hysteresis setting. While 0.1°C offers finer control, it can lead to more frequent relay switching and higher battery consumption.
- Utilize the weekly programming feature to automate your heating schedule and maximize energy savings.
- Take advantage of the Family Sharing function in the app to allow multiple household members to control the thermostat.
- Regularly check the app for data statistics on temperature and heating activity to better understand and optimize your energy usage.
11. Warranty and Support
The Ecobuy V9BW Smart Home Wifi Thermostat comes with a 2-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. Please retain your proof of purchase for warranty claims.
2-Year Warranty and customer support information.
For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or the manufacturer's customer service. Contact details can typically be found on the product packaging or the seller's official website.
