1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Meross MTS200BHK Smart Wi-Fi Boiler Thermostat. Please read this guide thoroughly before installation and use to ensure proper function and safety. Keep this manual for future reference.
Image 1.1: The Meross MTS200BHK Smart Wi-Fi Boiler Thermostat with its accompanying mobile application interface, displaying temperature settings and control options.
2. Product Overview
The Meross MTS200BHK is an intelligent Wi-Fi thermostat designed for boiler and water-fed heating systems. It offers precise temperature control and smart home integration for enhanced comfort and energy efficiency.
Key Features:
- Voice and Remote Control: Compatible with Apple HomeKit, Siri, Amazon Alexa, and Google Assistant. Control your heating remotely via the Meross app or Apple Home app.
- Open Window Detection: Automatically pauses heating for 30 minutes when an open window is detected, preventing energy waste.
- High Accuracy: Temperature accuracy of 0.1°C with an adjustable range of 5-35°C.
- Dual Sensor System: Features an integrated air temperature sensor and an external floor temperature sensor (for floor heating protection).
- Wi-Fi Connectivity: Operates on 2.4GHz Wi-Fi, no hub required.
- Summer Mode: Optimizes cooling for systems like air-source heat pumps during warmer months.
3. Setup and Installation
3.1 Compatibility Check
The Meross MTS200BHK thermostat is designed for boiler and water-fed heating systems. It is not compatible with electric floor heating systems. Please verify your heating system type before installation.
Image 3.1: This diagram illustrates that the thermostat is compatible with boiler and water-fed heating systems, but not with electric heating mats.
For a detailed compatibility check, you can scan the QR code below or visit the provided link:
Image 3.2: Scan this QR code to access the Meross compatibility checker for the MTS200BHK thermostat.
Compatibility Link: https://www.meross.com/compatibility-check/mts200-eu
3.2 Wiring Requirements
The thermostat requires both phase and neutral conductors for power and operation. It is designed for in-wall installation and does not operate on batteries. For boiler systems, a minimum of 4 wires are typically required. For underfloor heating, 3 wires are generally needed.
Image 3.3: This diagram illustrates the wiring connections for the thermostat, indicating that both phase (brown wire) and neutral (blue wire) conductors are required. Dimensions are also shown.
Important: Electrical installation should be performed by a qualified professional. Ensure power is turned off at the circuit breaker before beginning any wiring work.
3.3 App Download and Pairing
- Download the Meross app from the Apple App Store or Google Play Store.
- Create a Meross account or log in if you already have one.
- Follow the in-app instructions to add your MTS200BHK thermostat. Ensure your smartphone is connected to a 2.4GHz Wi-Fi network during the pairing process.
4. Operating Instructions
4.1 App Control and Scheduling
The Meross app allows you to control your thermostat from anywhere with an internet connection. You can adjust temperature, set schedules, and monitor heating status.
Image 4.1: The Meross app interface displaying a weekly heating schedule, allowing users to program desired temperatures for different times of the day and week.
4.2 Voice Control
Integrate your thermostat with popular voice assistants for convenient hands-free control.
- Apple HomeKit/Siri: Use commands like "Hey Siri, set the temperature to 22 degrees."
- Amazon Alexa: Use commands like "Alexa, set the thermostat to 22 degrees."
- Google Assistant: Use commands like "Hey Google, set the temperature to 22 degrees."
Image 4.2: This image demonstrates the voice control capabilities of the Meross thermostat, showing example commands for Siri, Alexa, and Google Assistant to adjust temperature settings.
4.3 Open Window Detection
To conserve energy, the thermostat automatically detects open windows. If a significant temperature drop is registered, the heating will temporarily turn off for 30 minutes. The app will also send notifications to alert you.
4.4 Summer Mode
The Summer Mode feature is designed to optimize cooling for systems such as air-source heat pumps during warmer seasons. Activating this mode helps maintain an ideal room temperature by adjusting the thermostat's behavior for cooling operations.
Image 4.3: The thermostat screen showing a snowflake icon, representing the activation of Summer Mode for cooling systems.
4.5 Tracking Heating Status
The Meross app allows you to track your heating system's status, view temperature history, monitor cumulative heating duration, and even estimate heating costs by inputting your energy tariff.
Image 4.4: The Meross app displaying detailed heating statistics, including historical temperature graphs and estimated heating costs over various periods.
5. Maintenance
- Cleaning: Gently wipe the thermostat screen and body with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Software Updates: Ensure your Meross app and thermostat firmware are up to date. Updates often include performance improvements and new features. Check the Meross app for available updates.
- Power Cycle: If the thermostat becomes unresponsive, try turning off the power at the circuit breaker for a few seconds, then turn it back on.
6. Troubleshooting
Common Issues and Solutions:
- Thermostat not connecting to Wi-Fi:
- Ensure your Wi-Fi network is 2.4GHz. The thermostat does not support 5GHz Wi-Fi.
- Check that your Wi-Fi router is within range and functioning correctly.
- Restart your router and the thermostat.
- Verify your Wi-Fi password is entered correctly in the Meross app.
- Inaccurate Temperature Reading:
- Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its internal sensor.
- If using an external sensor, ensure it is properly installed and positioned.
- The Meross app may allow for temperature calibration if a consistent offset is observed.
- Heating not turning on/off:
- Check the wiring connections to ensure they are secure and correct.
- Verify the thermostat is in the correct operating mode (e.g., not in Summer Mode if heating is desired).
- Confirm the schedule or manual setting is active and the target temperature is set appropriately.
- Voice control not working:
- Ensure the thermostat is properly linked to your Apple HomeKit, Alexa, or Google Assistant account.
- Check your internet connection.
- Use the exact commands specified by the voice assistant.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Meross |
| Model Name | MTS200BHK(EU) |
| Product Dimensions | 8.6 x 8.6 x 4.2 cm; 212 g |
| Voltage | 230 Volts |
| Material | Glass |
| Connectivity Technology | Wi-Fi (2.4 GHz only) |
| Compatible Models | Boiler/Water-fed heating systems. Works with Apple HomeKit, Amazon Alexa, Google Assistant, SmartThings. |
| Special Features | Built-in display, Open Window Detection, Summer Mode |
| Temperature Control Type | Heating |
| Included Components | Smart Wi-Fi Boiler Thermostat |
8. Warranty and Support
For warranty information, technical support, and frequently asked questions, please visit the official Meross website or contact their customer service directly. Details can typically be found in the product packaging or on the Meross support page.
