How to fix Worcester Bosch Greenstar Si fault code F69

What does the Worcester Bosch Greenstar Si F69 fault code mean?

The F69 fault code indicates a firmware issue within the Worcester Bosch Greenstar Si boiler. This typically means that the boiler’s software is malfunctioning or has become corrupted, affecting its operational capabilities.

Common Causes

  • Corrupted Firmware: This can occur due to power surges or improper updates that disrupt the normal functioning of the boiler’s software.
  • Hardware Malfunction: A failure in the control board or related components may lead to communication issues, triggering the F69 fault code.

Can I fix it myself? (DIY)

It is highly recommended to call a Gas Safe Engineer for this issue, as firmware problems often require specialized knowledge and tools to diagnose and rectify safely.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the F69 fault code is around £150 to £250. This includes potential software reprogramming or replacement of the control board, which are common solutions for firmware issues.