1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Viessmann Vitotrol 200 A Control Module. The Vitotrol 200 A is designed to enhance the control of your heating system, offering convenient adjustments for daily temperature and operating programs. Please read this manual thoroughly before using the device to ensure proper function and longevity.

Figure 1: The Viessmann Vitotrol 200 A Control Module. It features a digital screen displaying an outdoor temperature of -14°C and an indoor temperature of 20.5°C, along with heating and hot water symbols. To the right of the screen are control buttons including plus, minus, OK, and directional arrows, as well as dedicated buttons for party mode (cocktail glass icon) and economy mode (piggy bank icon). The Viessmann logo is visible at the bottom.
2. Product Overview
The Viessmann Vitotrol 200 A is a control module designed for heating circuits. It is compatible with Vitotronic control units that utilize a KM bus. Key features include:
- Daily temperature adjustment and operating program settings.
- Party and economy functions for flexible heating control.
- Integrated display for showing outdoor temperature, room temperature, and operational status.
- Room temperature sensor for activating room temperature control (applicable only for heating circuits with a mixing valve).
- Seamless parameter transfer between the Vitotrol 200 A and the Vitotronic module.
The 145 connection plug is included with the remote control for installation.
3. Setup and Installation
The Vitotrol 200 A module connects to Vitotronic control units via the KM bus. A maximum of two Vitotrol modules can be connected per Vitotronic unit.
3.1 Connection
- Ensure the main power supply to the heating system is turned off before beginning installation.
- Connect the Vitotrol 200 A using the provided 145 connection plug to the designated KM bus port on your Vitotronic control unit.
- Mount the control module in a suitable location, typically in the main living area, ensuring it is not exposed to direct sunlight or drafts, which could affect temperature readings.
3.2 Initial Configuration
After physical connection, the Vitotrol 200 A requires configuration within the Vitotronic control unit. This may involve:
- Accessing code level 2 settings on the Vitotronic controller.
- Manually adjusting required codes to recognize and integrate the Vitotrol 200 A.
- Correctly identifying your heating circuit (e.g., circuit 1 or 2) within the Vitotronic settings.
Note: For older Vitotronic boiler types, direct 'plug and play' functionality may not be available. Manual configuration of specific codes in the Vitotronic controller is often necessary. Consult your Vitotronic manual or a qualified technician for detailed programming instructions.
4. Operating Instructions
The Vitotrol 200 A allows for intuitive control of your heating system.
4.1 Display Information
The integrated display provides real-time information:
- Outdoor Temperature: Indicated by a snowflake or sun icon.
- Room Temperature: The current temperature detected by the internal sensor.
- Operating Status: Icons or text indicating heating mode, hot water production, etc.
4.2 Adjusting Settings
Use the control buttons to navigate and adjust settings:
- Plus (+) / Minus (-) Buttons: Adjust temperature setpoints or navigate menu options.
- OK Button: Confirm selections.
- Arrow Buttons: Navigate through menus or adjust values.
- Party Button (Cocktail Glass Icon): Activates an extended comfort heating period.
- Economy Button (Piggy Bank Icon): Activates an energy-saving heating period.
All adjustments made on the Vitotrol 200 A are transferred to the Vitotronic module, and vice versa. The most recent settings applied will always be active for your heating circuit.
5. Maintenance
The Vitotrol 200 A Control Module requires minimal maintenance.
- Cleaning: Wipe the surface of the module with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Inspection: Periodically check for any visible damage or loose connections.
For any internal maintenance or repairs, contact a qualified Viessmann service technician.
6. Troubleshooting
If you encounter issues with your Vitotrol 200 A, consider the following:
- Module Not Responding: Check the power supply to your Vitotronic unit and ensure the KM bus connection is secure.
- Incorrect Temperature Readings: Ensure the module is not placed near heat sources, direct sunlight, or drafts.
- Functionality Issues with Older Boiler Types: If the module does not function as expected with an older Vitotronic controller, it may require manual configuration of specific codes within the Vitotronic's code level 2 settings. This is not always a 'plug and play' device for all older systems. Consult your Vitotronic manual or a professional for assistance with these advanced settings.
- Parameter Transfer Problems: Verify that both the Vitotrol 200 A and the Vitotronic unit are powered on and correctly communicating via the KM bus.
If problems persist after basic troubleshooting, contact Viessmann customer support or a certified technician.
7. Specifications
| Feature | Detail |
|---|---|
| Model | Vitotrol 200 A |
| Manufacturer Part Number | Z008341 |
| Compatibility | Vitotronic with KM bus (max. 2 Vitotrol per Vitotronic) |
| Included | 145 connection plug |
| Room Temperature Sensor | Yes (for heating circuits with mixing valve) |
| Batteries Required | No |
| ASIN | B07BVD6PCH |
8. Warranty and Support
For information regarding product warranty, please refer to the documentation provided with your purchase or visit the official Viessmann website. For technical support, service, or spare parts, please contact your local Viessmann representative or authorized service partner.





