What does the Viessmann Vitodens 050-W E261 fault code mean?
The E261 fault code indicates a problem with the system flame sensor, which is responsible for detecting the presence of a flame during operation. If the sensor fails or malfunctions, the boiler will not operate safely and will shut down to prevent any hazards.
Common Causes
- Dirty Flame Sensor: A buildup of soot or debris on the flame sensor can prevent it from accurately detecting the flame.
- Faulty Flame Sensor: The sensor itself may be defective or worn out, requiring replacement to restore proper function.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to address this issue, as working with gas appliances can be dangerous. Attempting to fix electrical or gas-related problems without proper training can lead to serious safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty flame sensor on a Viessmann Vitodens 050-W is around £150 to £200. This includes the cost of the part and labour, as the flame sensor is a specific component that requires professional installation.