What does the Viessmann Vitodens 050-W E396 fault code mean?
The E396 fault code indicates a problem with the flame sensor in the Viessmann Vitodens 050-W boiler. This issue typically arises when the flame sensor fails to detect the flame, which can prevent the boiler from operating safely and efficiently.
Common Causes
- Dirty Flame Sensor: A buildup of soot or debris on the flame sensor can impede its ability to detect the flame properly.
- Faulty Flame Sensor: The flame sensor may be malfunctioning or damaged, requiring replacement to restore proper function.
Can I fix it myself? (DIY)
While cleaning the flame sensor can be a DIY task, it is highly recommended to call a Gas Safe Engineer for any gas or electrical issues to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a flame sensor in a Viessmann Vitodens 050-W is approximately £120. This includes the cost of the part and labour, reflecting the specific nature of the repair and the expertise required.