M3 Series Thermostat User Guide
Installation, Operation, and Wi-Fi Setup
Welcome
Thank you for your trust and support! This thermostat utilizes advanced technology to provide a comfortable temperature environment, making your living space more pleasant and stylish. Please read this manual carefully for detailed installation and usage instructions. Professional installation is recommended. Ensure installation and use comply with relevant laws.
Application
The intelligent digital thermostat is designed for room temperature control in floor heating systems, suitable for water heating, electric heating, or gas boilers. It operates by comparing ambient temperature with the set temperature to control floor heating equipment, enhancing comfort and saving energy. The digital thermostat features a microcomputer control, elegant design, ease of use, and supports manual, automatic, and programmable functions, with state memory.
Product Packaging
- Guide/manual: 1 PCS
- Screw pack: 1 PCS
- Thermostat host: 1 PCS
- Certificate of conformity: 2 PCS
- Sensing line (optional): 1 PCS
Electrical Specifications
| Parameter | Value |
|---|---|
| Temperature Sensor | NTC |
| Temperature Accuracy | ±1°C |
| Display Screen | LCD |
| Working Environment | -5-50°C |
| Self-consumption Power | <1W |
| Temperature Setting | 5~60°C |
| Display Range | 0-51°C |
| Load Current | Water heater 3A (resistive), Electric heater 16A (resistive) |
| Voltage | AC100-240V, 50/60Hz |
| Backlight | Adjustable brightness via mobile phone APP or turn off |
| Sensors | Internal sensor and external sensor on the ground (R2) |
About Wi-Fi Connection
To use the Wi-Fi temperature controller, you must first set up Wi-Fi connection via your smartphone or tablet. This allows communication between your devices.
Wi-Fi Connection Steps
When the thermostat is powered on, press and hold the up [⬆️] button for 5 seconds. The Wi-Fi icon [?] will flash on the thermostat display, indicating it has entered the code matching state.
1. APP Download
Search for "Tuya Smart" in your app market or scan the following QR code to download the software: [QR code for Tuya Smart app download]
2. Register an Account
If you do not have an APP account, you can register or log in via SMS verification code. Click "Create New Account" to access the privacy policy page. After agreeing, you will proceed to the registration page. The system may auto-detect your country/region, or you can select it manually. Enter your phone number or email address, click "Get Verification Code", enter the received code, then enter your password. Click "Finish" to register successfully.
3. Add Device
Bluetooth Connection: Turn on your mobile phone's Bluetooth. Power on the thermostat and open the Tuya APP. Click "Add Device" or "+" on the top right of the APP homepage. The app will prompt to find the device to be added. Follow the on-screen prompts.
Automatic Discovery: The app can search for devices. Add widgets as prompted on the phone page.
Wi-Fi Connection: When the thermostat is powered on, press and hold the up [⬆️] button for 5 seconds until the Wi-Fi icon [?] flashes (slowly). The thermostat enters code matching state. In the Tuya APP, find the "Temperature Control Product (Bluetooth + Wi-Fi model)" under "Small Household Appliances". Ensure the device is in the specified network configuration mode. Click the confirmation button on the page, select the Wi-Fi network in the device's working area, enter the Wi-Fi password, and click "Next". Follow the page prompts ("Go to connect") and instructions to return to the Tuya APP. The app will display the network configuration process and success/failure interfaces.
If network configuration fails, the app will display a failure page. You can choose to add again or view help. Please confirm if the thermostat has entered the code matching state if the connection fails.
User Instructions
- Read this manual carefully. General operations may damage the product or cause a dangerous situation.
- Installation personnel must be well-trained and experienced service technicians.
- After installation is complete, please close this manual carefully and operate this product following the user guide. Note: There is a risk of electric shock or equipment damage.
Wiring Diagram
Description of the wiring diagram: The diagram illustrates the electrical connections for the thermostat. It shows AC100-240V power input terminals labeled L (Line) and N (Neutral). It also shows output terminals for connecting to heating devices, typically labeled for Line and Neutral outputs for different heating types (e.g., water heater, electric heater, gas boiler). Specific terminal blocks are indicated for AC100-240V 3A and AC100-240V loads. Connections for an optional sensing line (R2) are also depicted.
Mounting Steps
- Connect the power supply according to the wiring diagram.
- Separate the power supply from the control board cable.
- Screw the power supply into the 86-type wall box.
- Connect the power board to the control board line, aligning the buckle at a 30-degree angle to complete the installation.
Visual description: An illustration shows the process of connecting wires to the thermostat's base unit, then attaching the main unit to a wall-mounted electrical box.
Icon Description
- Mode icon: [Mode button]
- Room temperature: Displays the current ambient temperature.
- SET: [Set button]
- Heating icon: [Heating icon] or ? (Indicates the heating system is active)
- Wi-Fi icon: [Wi-Fi icon] or ? (Indicates the status of the Wi-Fi connection)
- Locking icon: [Lock icon] or ? (Indicates the child lock feature is active)
- Button icon: General indicator for buttons.
Operation Guide
- Power on/off: Press the [Power button] to turn the thermostat on or off.
- Mode Switch: Press the [M button] to switch between Manual and Away modes.
- Child Lock: Simultaneously press and hold the up [⬆️] and down [⬇️] keys for 5 seconds to add or cancel the child lock [?].
- Wi-Fi Link: When the thermostat is powered on, press and hold the up [⬆️] button for 5 or 8 seconds. The Wi-Fi icon [?] will flash, and the thermostat enters the code matching state.
Time Programming Instructions
Set custom heating schedules for different times and temperatures. The table below shows example settings, which can be adjusted.
| Option | Time | Temperature Adjustment | Defaults |
|---|---|---|---|
| 1 | 06:00 | 20°C | 20°C |
| 2 | 08:00 | 16°C | 16°C |
| 3 | 11:30 | 16°C | 16°C |
| 4 | 12:30 | 16°C | 16°C |
| 5 | 17:00 | 22°C | 22°C |
| 6 | 22:00 | 16°C | 16°C |
| 7 | 08:00 | 22°C | 22°C |
| 8 | 23:00 | 16°C | 16°C |
Advanced Option Setting
In the shutdown state, press the [M button] and [Set button] for 5 seconds to enter advanced option settings. Press the [M button] to cycle through options, and use the up [⬆️] and down [⬇️] keys to adjust values. Press the [Set button] to exit.
- Temperature Compensation: Adjusts the room temperature display by -9.9°C to +9.9°C. Default is 0°C.
- Sensor Selection: Choose between internal sensor (IN) or external sensor (OUT). Default is IN.
- Temperature Limit: Set the upper limit for temperature (default 35°C, adjustable 35°C-60°C).
- Hysteresis Setting: Set the temperature difference for heating activation (default 1°C, adjustable 0.5°C-3°C).
- Antifreeze Function: Enable or disable the antifreeze mode. Default is ON.
- Rest Day Selection: Configure rest days (double rest, single-day rest, no rest). Default is double rest.
- Main and Auxiliary Output Selection: Configure the output mode for main and auxiliary heating.
- Holiday Mode: Set a specific temperature for holidays.
- Passive Linkage Delay: Set a delay for passive linkage functions.
- Upper Limit of Temperature: Set the maximum allowable temperature (default 60°C, adjustable 39°C to 95°C).
- Restore Factory Settings: Reset all settings to their default factory values.
Thermostat APP Interface Display
The app interface displays the current room temperature (e.g., 28.5°C), operating status (e.g., OFF), and provides controls for mode selection, temperature setting, and power management.
Visual description: A screenshot of the mobile application shows a large display of the current temperature, an "OFF" status indicator, and various control buttons for managing the thermostat.
FCC Compliance Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.
