What does the Worcester Bosch Greenstar Si F61 fault code mean?
The F61 fault code indicates a communication issue within the boiler’s internal components, often related to the control board or sensors. This can prevent the boiler from operating correctly and may require professional diagnosis.
Common Causes
- Faulty Control Board: A malfunctioning control board can disrupt communication between the boiler’s components.
- Loose or Damaged Wiring: Poor connections or damaged wiring can lead to communication failures, affecting the boiler’s performance.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components that can be dangerous to handle without proper training.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F61 fault could be around £150 to £250, primarily due to the potential need for a new control board and associated labour costs.