What does the Viessmann Vitodens 050-W E364 fault code mean?
The E364 fault code indicates an issue with the condensate trap in the Viessmann Vitodens 050-W boiler. This typically means that the condensate trap is either blocked or malfunctioning, preventing proper drainage of condensate water.
Common Causes
- Blockage: The condensate trap may be blocked by debris or sludge, preventing water from flowing through it.
- Faulty Trap: The condensate trap itself may be defective or damaged, leading to improper functioning.
Can I fix it myself? (DIY)
While you can check for blockages in the condensate trap and clear them if accessible, it is strongly advised to call a Gas Safe Engineer for any repairs or replacements to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty condensate trap is around £150 to £250, which includes parts and labour. This cost reflects the complexity of the repair and the need for a qualified engineer to perform the work safely.