What does the Viessmann Vitodens 050-W E110 fault code mean?
The E110 fault code on the Viessmann Vitodens 050-W indicates a flame failure, meaning the boiler is unable to detect a flame during operation. This can lead to the boiler shutting down to prevent unsafe conditions.
Common Causes
- Insufficient Gas Supply: A blockage or issue in the gas supply line can prevent the boiler from receiving the necessary fuel to ignite.
- Faulty Flame Sensor: If the flame sensor is dirty or malfunctioning, it may not detect the flame, causing the boiler to shut down.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any gas or electrical issues. However, you can check the gas supply and ensure the boiler’s pressure is within the correct range by referring to the user manual.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty flame sensor is around £150 to £200, including parts and labour. This cost reflects the need for a qualified engineer to safely replace the sensor and ensure proper operation.