What does the Viessmann Vitodens 050-W E246 fault code mean?
The E246 fault code on the Viessmann Vitodens 050-W indicates a problem with the drain valve, which may be stuck or malfunctioning. This can lead to issues with the boiler’s drainage system, potentially causing water accumulation and affecting overall performance.
Common Causes
- Blocked Drain Valve: Debris or sediment may be obstructing the drain valve, preventing it from functioning correctly.
- Mechanical Failure: The drain valve itself may have failed due to wear and tear or manufacturing defects, requiring replacement.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to address this issue, as working on boiler components can be dangerous and requires professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for fixing the drain valve on a Viessmann Vitodens 050-W is approximately £150 to £250. This includes the cost of the replacement part and labour, reflecting the complexity of the repair and the need for a qualified technician.