What does the Viessmann Vitodens 050-W E317 fault code mean?
The E317 fault code on the Viessmann Vitodens 050-W indicates a problem with the system burner, which may prevent the boiler from igniting or operating correctly. This issue can lead to heating and hot water supply disruptions.
Common Causes
- Faulty Ignition Electrode: The ignition electrode may be damaged or dirty, preventing proper ignition of the burner.
- Gas Supply Issues: Insufficient gas supply or pressure can lead to burner malfunction, causing the boiler to fail to ignite.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any issues related to gas or electrical components. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E317 fault could range from £150 to £300, depending on whether the ignition electrode needs replacement or if there are gas supply issues that require further investigation.