What does the Viessmann Vitodens 050-W E350 fault code mean?
The E350 fault code indicates a problem with the ignition electrode in the Viessmann Vitodens 050-W boiler. This issue can prevent the boiler from igniting properly, leading to heating and hot water supply disruptions.
Common Causes
- Faulty Ignition Electrode: The ignition electrode may be damaged or worn out, preventing it from generating the necessary spark for ignition.
- Electrical Connection Issues: Loose or corroded connections to the ignition electrode can disrupt the electrical flow needed for proper operation.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix ignition-related problems without proper training and certification may lead to safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the ignition electrode is around £150 to £250. This includes the cost of the part and labour, as ignition electrodes are typically priced between £50 and £100, with the remainder covering the engineer’s time.