What does the Viessmann Vitodens 050-W E201 fault code mean?
The E201 fault code on the Viessmann Vitodens 050-W indicates a malfunction with the circulation pump. This issue can prevent the boiler from effectively circulating water, leading to heating inefficiencies or complete system failure.
Common Causes
- Blocked Pump Impeller: Debris or scale buildup can obstruct the impeller, causing it to fail.
- Electrical Fault: Issues with the pump’s wiring or control board can prevent it from receiving power or functioning correctly.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working on the pump may involve electrical components and gas safety regulations. Attempting repairs without proper qualifications can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty pump on a Viessmann Vitodens 050-W is approximately £300 to £400. This includes the cost of the pump itself and labour, reflecting the complexity of the job and the need for a qualified technician.