How to fix Vaillant ecoFIT pure fault code F30

What does the Vaillant ecoFIT pure F30 fault code mean?

The F30 fault code on a Vaillant ecoFIT pure boiler indicates a malfunction with the fan, which is crucial for proper combustion and ventilation. This issue can lead to the boiler shutting down to prevent unsafe operation.

Common Causes

  • Blocked Fan: Debris or obstructions may prevent the fan from spinning freely, affecting its performance.
  • Electrical Fault: Issues with the wiring or connections to the fan can disrupt its operation, leading to the fault code.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix electrical or gas-related problems without proper training can lead to serious safety risks.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for a faulty fan in a Vaillant ecoFIT pure boiler is around £250 to £350. This includes parts and labour, as the fan replacement requires professional expertise to ensure safe and correct installation.