How to fix Viessmann Vitodens 200-W fault code F24

What does the Viessmann Vitodens 200-W F24 fault code mean?

The F24 fault code indicates a flame detection fault in the Viessmann Vitodens 200-W boiler. This means that the boiler is unable to detect the flame during operation, which can prevent it from functioning correctly.

Common Causes

  • Faulty Flame Sensor: The flame sensor may be dirty or malfunctioning, preventing it from detecting the flame properly.
  • Gas Supply Issues: Insufficient gas supply or pressure problems can lead to the flame not being established, triggering the fault code.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous to handle without proper training.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving a F24 fault could be around £150 to £250, primarily for replacing a faulty flame sensor or addressing gas supply issues, depending on the specific cause and parts needed.