1. Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your ETHERMA eTWIST thermostat. The eTWIST thermostat is designed for precise temperature regulation in rooms, estates, or with floor heating systems, offering control via a rotary knob and a Bluetooth-enabled mobile application.
2. Safety Instructions
- Installation and electrical connections must be performed by a qualified electrician in accordance with local regulations.
- Ensure the power supply is disconnected before performing any installation or maintenance work.
- Do not expose the thermostat to moisture or extreme temperatures.
- Do not attempt to open or repair the device yourself. Refer to qualified personnel.
3. Product Features
- Precise temperature regulation for energy saving.
- Suitable for room, estate, or floor heating systems.
- Easy operation via integrated rotary knob.
- Bluetooth 4.2 connectivity for app control.
- Extended functions available through the free ETHERMA eControl app.
- Conforms to Eco Design Guidelines.
4. Setup
4.1. Installation
The ETHERMA eTWIST thermostat is designed for standard flush-mounted installations. Ensure the installation location is free from direct sunlight, drafts, or other heat sources that could affect temperature readings.
- Power Disconnection: Before starting, ensure the main power supply to the circuit is completely disconnected.
- Wiring: Connect the thermostat according to the wiring diagram provided with the product packaging. This typically involves connecting the live, neutral, and load wires from your heating system. Consult a qualified electrician if you are unsure.
- Mounting: Secure the thermostat into the flush-mounted box using the provided screws. Ensure it is level and flush with the wall surface.
- Cover Plate: Attach the decorative cover plate and the rotary knob.
- Power Connection: Once installation is complete, restore power to the circuit.
4.2. Initial Power-On
Upon first power-on, the thermostat will initiate. The display (if applicable, or indicator lights) will show its status. You can then proceed to set the desired temperature using the rotary knob or connect via the app.
5. Operating Instructions
Figure 1: ETHERMA eTWIST Thermostat Front View. The central rotary knob allows for manual temperature adjustment.
5.1. Manual Operation (Rotary Knob)
The eTWIST thermostat features a simple rotary knob for direct temperature control.
- Adjusting Temperature: Rotate the knob clockwise to increase the desired temperature and counter-clockwise to decrease it. The marked values (e.g., 18, 21, 24, max) indicate common temperature settings.
- Frost Protection: Turning the knob to the snowflake symbol activates the frost protection mode, maintaining a minimum temperature to prevent freezing.
5.2. App Control (Bluetooth)
For advanced control and programming, use the ETHERMA eControl app.
- Download the App: Download the free ETHERMA eControl app from your smartphone's app store (iOS or Android).
- Enable Bluetooth: Ensure Bluetooth is enabled on your smartphone.
- Pairing: Open the eControl app and follow the on-screen instructions to discover and pair with your eTWIST thermostat. The app will guide you through the pairing process.
- Advanced Functions: Once connected, you can access extended functions such as setting operation hours, programming temperature schedules, and monitoring energy consumption.
6. Maintenance
- Cleaning: Clean the thermostat's surface with a soft, dry cloth. Do not use abrasive cleaners, solvents, or excessive moisture.
- Inspection: Periodically check for any visible damage or loose connections. If any issues are found, disconnect power and consult a qualified technician.
- No user-serviceable parts are inside.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Thermostat not powering on. | No power supply; incorrect wiring. | Check circuit breaker. Verify wiring connections (consult electrician). |
| Heating not turning on/off. | Temperature setting too low/high; wiring issue; heating system fault. | Adjust desired temperature. Check heating system. Consult electrician for wiring. |
| Cannot connect to app via Bluetooth. | Bluetooth off on phone; app not installed; thermostat too far. | Ensure phone Bluetooth is on. Install ETHERMA eControl app. Move closer to thermostat. Restart phone/thermostat. |
| Inaccurate temperature reading. | Thermostat exposed to drafts or direct heat. | Relocate thermostat if possible, or shield it from external influences. |
8. Specifications
- Model Number: 40517
- Brand: Etherma
- Product Dimensions: 5.5 x 5.5 x 5 cm
- Weight: 210 g
- Voltage: 230 Volts
- Temperature Range: 5-28°C
- Connectivity: Bluetooth 4.2
- Controller Type: Mechanical knob
- Backlight: Yes
- Compliance: Conforms to Eco Design Guidelines
9. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or visit the official Etherma website. Do not attempt to repair the device yourself.
