What does the Viessmann Vitodens 222-F F71 fault code mean?
The F71 fault code on the Viessmann Vitodens 222-F indicates a faulty system reporting issue, which typically relates to communication problems between the boiler and its control system. This can lead to incorrect operation or failure to operate altogether.
Common Causes
- Faulty Sensor: A malfunctioning temperature or pressure sensor can disrupt the system’s reporting capabilities.
- Wiring Issues: Damaged or loose wiring connections can prevent proper communication between components, triggering the fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair the issue, as it may involve gas or electrical components that require professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F71 fault could range around £150 to £300, depending on whether a sensor replacement or wiring repair is needed. This cost reflects the complexity of the issue and the need for professional service.