1. Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your BUDERUS Ecomatic/Logamatic ERC Room Controller with AM 1 Module. Please read this manual thoroughly before attempting any installation or operation to ensure safe and efficient use of the device. The ERC room controller is designed to manage your heating system, providing comfortable indoor temperatures and energy efficiency.

Image 1.1: The BUDERUS Ecomatic/Logamatic ERC Room Controller shown within its packaging, alongside its accompanying installation manual. This image illustrates the product as it would appear upon unboxing, highlighting the controller's white casing and the included documentation.
2. Safety Information
WARNING: Improper installation or maintenance can lead to serious injury, death, or property damage. Always adhere to the following safety guidelines:
- Installation and removal of modules must only be performed by a qualified professional.
- Before any installation work, switch off the wall-mounted boiler or heating system.
- The control unit contains electrostatically sensitive components. Avoid touching the circuit board directly to prevent damage.
- Ensure all electrical connections are secure and comply with local regulations.
- Do not expose the device to moisture or extreme temperatures.

Image 2.1: The cover of the "Montageanweisung Regelgerät ERC" (Installation Instructions Control Unit ERC) manual. It prominently features a warning triangle symbol, indicating important safety information regarding the installation and handling of the device.
3. Product Overview
The BUDERUS Ecomatic/Logamatic ERC is a room controller designed for precise temperature management within your living space. It features a clear display, a rotary knob for temperature adjustment, and mode selection buttons.

Image 3.1: A close-up front view of the BUDERUS Ecomatic/Logamatic ERC Room Controller. The image clearly shows the digital display, the central rotary knob for temperature settings (ranging from 10 to 30 degrees Celsius), and the mode selection buttons labeled "Nacht" (Night), "Man" (Manual), and "Auto" (Automatic).
3.1. Components
- Digital Display: Shows current temperature, operating mode, and other relevant information.
- Rotary Knob: Used to set the desired room temperature.
- Mode Buttons:
- Nacht (Night): Activates night setback temperature.
- Man (Manual): Allows continuous manual temperature setting.
- Auto (Automatic): Operates according to a programmed time schedule.
- AM 1 Module: An integrated module for enhanced functionality (specific functions depend on the heating system).

Image 3.2: The cover of the "REGELGERAET ERC LOGAMATIC RAUM CONTROLLER" manual, displaying a schematic illustration of the room controller. This image provides a general visual representation of the device's form factor and primary controls.
4. Setup and Installation
The installation of the BUDERUS Ecomatic/Logamatic ERC Room Controller should only be carried out by a certified heating technician. This ensures proper wiring, safe operation, and compliance with all relevant electrical and building codes.
4.1. Mounting Location
Choose an interior wall in a main living area, away from direct sunlight, drafts, or heat sources (e.g., radiators, lamps, televisions). The recommended mounting height is approximately 1.5 meters (5 feet) from the floor for accurate temperature sensing.
4.2. Electrical Connection
The controller connects to your heating system via specific terminals. Refer to the detailed wiring diagrams provided in the professional installation manual for your specific boiler model. Ensure the main power supply to the heating system is disconnected before making any electrical connections.

Image 4.1: The rear view of the BUDERUS Ecomatic/Logamatic ERC Room Controller. This perspective highlights the mounting holes for wall installation, the terminal block area for electrical connections, and a label indicating "SOFTWARE SV-1.4". This view is crucial for professional installers.
4.3. Initial Configuration
After installation and power-up, the controller may require initial configuration, such as setting the date, time, and basic heating parameters. Follow the on-screen prompts and refer to the specific instructions for your heating system's integration with the ERC controller.
5. Operating Instructions
5.1. Setting the Temperature
To adjust the desired room temperature, rotate the large central knob. The current setting will be displayed on the screen. Turning the knob clockwise increases the temperature, and counter-clockwise decreases it. The range is typically from 10°C to 30°C.

Image 5.1: A front view of the BUDERUS Ecomatic/Logamatic ERC Room Controller, with its digital display showing a series of 'A' characters, indicating a potential test mode or initial power-up sequence. The rotary knob is set to approximately 18 degrees Celsius.
5.2. Selecting Operating Mode
Use the buttons below the display to select the desired operating mode:
- Nacht (Night): Activates a pre-set night setback temperature for energy saving.
- Man (Manual): The heating system will maintain the temperature set by the rotary knob continuously, overriding any programmed schedules.
- Auto (Automatic): The controller follows the programmed time schedule for heating and temperature settings.
5.3. Advanced Settings
For advanced settings such as programming time schedules, holiday modes, or specific system parameters, refer to the comprehensive operating manual provided with your heating system or consult a qualified technician. These settings are typically accessed through specific button combinations or menu navigation on the display.
6. Maintenance
The BUDERUS Ecomatic/Logamatic ERC Room Controller requires minimal maintenance to ensure optimal performance.
- Cleaning: Gently wipe the exterior of the controller with a soft, dry, or slightly damp cloth. Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the casing or electronic components.
- Inspection: Periodically check for any visible damage or loose connections. If any issues are observed, contact a qualified technician.
- Software Updates: Software updates are typically handled by qualified service personnel during routine heating system maintenance. The current software version is 1.4.
7. Troubleshooting
If you encounter issues with your ERC Room Controller, consider the following basic troubleshooting steps. For complex problems, always contact a qualified heating technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank | No power supply; loose connection. | Check power to the heating system. Ensure connections are secure (professional assistance recommended). |
| Heating not responding to settings | Incorrect operating mode; system fault; external thermostat interference. | Verify operating mode (Auto, Man, Nacht). Check boiler status. Consult technician if problem persists. |
| Inaccurate temperature reading | Controller located near heat source/draft; sensor fault. | Ensure controller is not exposed to direct heat or cold drafts. If problem persists, contact technician. |
| Error codes on display | System malfunction. | Note the error code and consult your heating system's main manual or contact a qualified technician for diagnosis. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | BUDERUS |
| Model | Ecomatic/Logamatic ERC |
| Manufacturer | BUDERUS |
| Color | White |
| Software Version | 1.4 |
| Batteries Required | No |
| ASIN | B01BBTBB0G |
| First Available Date | January 15, 2020 |
9. Warranty and Support
Specific warranty details for the BUDERUS Ecomatic/Logamatic ERC Room Controller are typically provided at the point of purchase or within the main documentation of your complete heating system. As this product is often sold as a component of a larger system, warranty terms may vary.
For technical support, warranty claims, or service, please contact your authorized BUDERUS dealer or a qualified heating technician. Ensure you have your product model number (Ecomatic/Logamatic ERC) and any relevant purchase information available when seeking support.
You can find more information on the official BUDERUS website: www.buderus.com





