What does the Viessmann Vitodens 222-F F31 fault code mean?
The F31 fault code on the Viessmann Vitodens 222-F indicates a malfunction with the circulation pump. This can lead to inadequate water flow, affecting the boiler’s heating efficiency.
Common Causes
- Blocked Pump: Debris or scale buildup can obstruct the pump, preventing it from operating correctly.
- Electrical Fault: Issues with the pump’s electrical connections or the control board can lead to a failure in pump operation.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any repairs related to the pump, as it involves gas and electrical components that require professional handling.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty pump on a Viessmann Vitodens 222-F is approximately £300 to £450. This includes parts and labour, as the pump itself can cost around £150 to £250, with the remainder covering installation and diagnostics.