What does the Viessmann Vitodens 200-W F79 fault code mean?
The F79 fault code on the Viessmann Vitodens 200-W indicates a problem with the remote control unit, which may be malfunctioning or not communicating properly with the boiler. This can prevent the user from effectively controlling the heating system.
Common Causes
- Faulty Remote Control Unit: The remote control may be damaged or defective, leading to communication issues with the boiler.
- Interference or Signal Issues: There may be interference from other electronic devices or obstacles that disrupt the signal between the remote control and the boiler.
Can I fix it myself? (DIY)
While some users may attempt to troubleshoot by replacing batteries or resetting the remote, it is recommended to call a Gas Safe Engineer for any electrical or gas-related issues to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty remote control unit is around £150 to £250, which includes the cost of a new remote and potential labour charges for installation and testing.