What does the Viessmann Vitodens 100-W F82 fault code mean?
The F82 fault code on the Viessmann Vitodens 100-W indicates a faulty voltage issue, which can affect the boiler’s ability to operate correctly. This may be due to electrical supply problems or internal component failures.
Common Causes
- Electrical Supply Issues: Fluctuations or interruptions in the electrical supply can lead to voltage problems.
- Faulty Components: Internal components such as the control board or sensors may be malfunctioning, causing incorrect voltage readings.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any electrical issues, as working with gas appliances can be dangerous. Attempting DIY repairs without proper knowledge may lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F82 fault could be around £150 to £300, depending on whether it requires a simple electrical check or replacement of faulty components like the control board.