How to fix Vaillant ecoTEC exclusive fault code F69

What does the Vaillant ecoTEC exclusive F69 fault code mean?

The F69 fault code on the Vaillant ecoTEC exclusive indicates a problem with the system reset function. This typically means that the boiler is unable to reset itself due to a fault in the control system or a communication issue.

Common Causes

  • Control Board Failure: A malfunctioning control board can prevent the boiler from executing a reset properly.
  • Wiring Issues: Damaged or loose wiring connections can disrupt communication between components, leading to the F69 error.

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 complex electrical components that require professional expertise.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the F69 fault could range from £150 to £300, depending on whether the control board needs replacing or if wiring repairs are necessary.