ETHERMA ET-14A Wireless Electronic Thermostat User Manual

1. Introduction

Thank you for choosing the ETHERMA ET-14A Wireless Electronic Thermostat. This device is designed to provide precise and efficient temperature control in various indoor environments such as living rooms, offices, and hotel rooms. Its wireless design simplifies installation by eliminating the need for complex cable laying.

This manual provides detailed instructions for the setup, operation, and maintenance of your ET-14A thermostat. Please read it thoroughly before using the device to ensure safe and optimal performance.

2. Safety Information

WARNING: Please observe the following safety precautions to prevent injury or damage to the device.

• Read all instructions carefully before installation and operation.
• Installation should only be performed by qualified personnel in accordance with local electrical codes and regulations.
• Do not expose the thermostat to water, excessive humidity, or extreme temperatures.
• Ensure the power supply (AAA micro batteries) is correctly inserted with the correct polarity.
• Do not attempt to disassemble or repair the thermostat yourself. Contact qualified service personnel for assistance.
• Keep the device out of reach of children.
• Dispose of used batteries responsibly according to local regulations.

3. Product Overview

The ETHERMA ET-14A thermostat features a clear LCD display and intuitive controls for easy temperature management.

Figure 3.1: Front view of the ETHERMA ET-14A Wireless Electronic Thermostat. This image shows the large LCD screen displaying time and temperature, along with the control buttons below the screen and the rotary dial at the bottom.

3.1 Components

• LCD Display: Large, backlit screen showing current time, temperature, operating mode, and programming.
• Control Buttons: Buttons located below the display for navigating menus and making selections.
• Rotary Dial: Used for adjusting temperature settings and navigating through options.
• Battery Compartment: Located on the rear for AAA micro batteries.
• Mounting Points: For wall or flush-mounted box installation.
• Support Foot: Detachable foot for standalone placement.

4. Setup

4.1 Battery Installation

1. Locate the battery compartment on the back of the thermostat.
2. Open the compartment cover.
3. Insert the AAA micro batteries (included), ensuring correct polarity (+/-).
4. Close the battery compartment cover securely.
5. The LCD display should power on.

4.2 Mounting Options

The ET-14A offers flexible installation:

• Wall Mounting: Use the provided screws and anchors to secure the thermostat to a wall at an appropriate height (typically 1.5m from the floor) and away from direct sunlight or drafts.
• Flush-Mounted Box Installation: The thermostat can be mounted directly onto a standard flush-mounted electrical box.
• Standalone Placement: Attach the support foot to the back of the thermostat for placement on a table, shelf, or desk.

4.3 Initial Pairing (if applicable)

If your ET-14A thermostat needs to be paired with a receiver (e.g., LAVA-F or ET-111A), refer to the specific instructions provided with your receiver unit for the pairing process. Generally, this involves putting both devices into a pairing mode.

5. Operating the Thermostat

The ET-14A thermostat features 5 operating modes and comprehensive programming options.

5.1 Setting Time and Date

Upon first power-up or after battery replacement, you may need to set the current time and day. Use the control buttons and rotary dial to navigate the settings menu and adjust these parameters. Consult the on-screen prompts for guidance.

5.2 Operating Modes

The thermostat offers five distinct operating modes to suit your needs:

• Comfort Mode: Maintains a comfortable, user-defined temperature.
• Setback Mode: Maintains a lower, energy-saving temperature (e.g., during absence or at night).
• Frost Protection Mode: Prevents the temperature from dropping below a critical point (e.g., 5°C) to protect pipes from freezing.
• Automatic Mode: Follows the programmed weekly or daily schedule.
• Stop Mode (Off): Turns off heating control.

Switch between modes using the dedicated mode button or through the menu.

5.3 Weekly and Daily Programming

The ET-14A allows for detailed programming to optimize energy consumption and comfort.

1. Access the programming menu via the control buttons.
2. Select whether to program for the entire week or specific days.
3. Define time periods and the desired temperature for each period (e.g., Comfort during the day, Setback at night).
4. Save your settings. The thermostat will then operate in Automatic Mode according to your schedule.

5.4 Window Contact Integration (ET-14A-FK)

For enhanced energy efficiency, the ET-14A can be combined with the ET-14A-FK window contact. When an open window is detected, the thermostat will automatically adjust the heating to prevent unnecessary energy loss. Refer to the ET-14A-FK manual for pairing and operation details.

Figure 5.1: Examples of heating applications. The left image shows an under-desk heating solution, while the right image illustrates a wall-mounted heating panel, both benefiting from precise temperature control by the ET-14A.

6. Maintenance

The ETHERMA ET-14A thermostat requires minimal maintenance.

• Cleaning: Wipe the thermostat's surface with a soft, dry cloth. Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the plastic and electronic components.
• Battery Replacement: Replace the AAA micro batteries when the low battery indicator appears on the display. Ensure proper polarity during replacement.
• Avoid Obstructions: Ensure that the thermostat's temperature sensor (usually a small opening on the casing) is not obstructed by furniture, curtains, or other objects, as this can affect temperature readings.

7. Troubleshooting

If you encounter issues with your ET-14A thermostat, refer to the table below for common problems and their solutions.

If the problem persists after trying these solutions, please contact ETHERMA customer support.

8. Specifications

Technical specifications for the ETHERMA ET-14A Wireless Electronic Thermostat:

• Model: ET-14A (40595)
• Product Type: Wireless Room Thermostat with Clock
• Dimensions (L x W x H): 135 x 80 x 23 mm
• Weight: 239 grams
• Color: Pure White (RAL 9010)
• Material: Plastic
• Power Supply: AAA Micro Batteries (included)
• Temperature Range: 5 °C to 30 °C
• Protection Class: IP 30
• Frequency: 868 MHz
• Range: 100 to 300 m (depending on environment)
• Operating Modes: Comfort, Setback, Frost Protection, Automatic, Stop
• Programming: Weekly and Daily
• Display Type: LCD
• Connectivity Technology: Wi-Fi (for communication with receiver)
• Compliance: Eco-design directives
• Country of Origin: Germany

9. Warranty & Support

9.1 Warranty Information

ETHERMA products are manufactured to high quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official ETHERMA website. Keep your proof of purchase for warranty claims.

9.2 Customer Support

If you have any questions, require technical assistance, or need to report a problem that cannot be resolved using the troubleshooting guide, please contact ETHERMA customer support.

Contact Information:

• Visit the official ETHERMA website for contact details and FAQs.
• Refer to your product packaging for regional support numbers.

When contacting support, please have your product model (ET-14A) and serial number (if applicable) ready.