How to fix Viessmann Vitodens 222-F fault code F68

What does the Viessmann Vitodens 222-F F68 fault code mean?

The F68 fault code on the Viessmann Vitodens 222-F indicates a faulty system alert, which typically suggests that the boiler has detected an issue with its operation or safety mechanisms. This may involve problems with sensors, electrical components, or system pressure.

Common Causes

  • Faulty Sensors: Malfunctioning temperature or pressure sensors can trigger the F68 fault code, leading to incorrect readings and system alerts.
  • Electrical Issues: Problems with wiring or connections within the boiler can cause communication failures, resulting in system alerts being activated.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for any issues related to gas or electrical components. Attempting to fix these problems without proper training can be dangerous.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for addressing the F68 fault code could range from £150 to £300, depending on whether sensor replacements or electrical repairs are needed. This estimate includes parts and labour for a qualified technician.