What does the Viessmann Vitodens 050-W E213 fault code mean?
The E213 fault code indicates a problem with the modulation sensor in the Viessmann Vitodens 050-W boiler. This sensor is responsible for regulating the boiler’s output based on heating demand, and a fault can lead to inefficient operation or failure to heat.
Common Causes
- Faulty Modulation Sensor: The sensor may be defective or malfunctioning, leading to incorrect readings and boiler performance issues.
- Wiring Issues: Damaged or loose wiring connections to the modulation sensor can disrupt communication between the sensor and the boiler control unit.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and gas safety regulations. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the modulation sensor is around £250 to £350. This includes the cost of the part and labour, as the sensor itself typically costs between £100 and £150, with the remainder covering installation by a qualified engineer.