How to fix Viessmann Vitodens 050-W fault code E210

What does the Viessmann Vitodens 050-W E210 fault code mean?

The E210 fault code indicates a malfunction with the outdoor temperature sensor of the Viessmann Vitodens 050-W boiler. This sensor is crucial for the boiler’s operation as it helps regulate heating based on external temperature conditions.

Common Causes

  • Damaged Sensor: The outdoor temperature sensor may be physically damaged or worn out, leading to inaccurate readings.
  • Wiring Issues: Faulty or damaged wiring connections between the sensor and the boiler can disrupt communication and cause the fault code to appear.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer to address this issue, as it involves electrical components and safety regulations. Attempting to fix it yourself could lead to further complications or safety hazards.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for replacing the outdoor temperature sensor is around £150-£200. This includes the cost of the part and labour, as the sensor itself typically costs around £50-£80, with the remainder covering installation by a qualified engineer.