What does the Worcester Bosch Greenstar Ri F66 fault code mean?
The F66 fault code on the Worcester Bosch Greenstar Ri indicates a problem with the boiler’s reset function, often related to the control board or electrical connections. This fault can prevent the boiler from operating correctly, requiring attention to restore normal functionality.
Common Causes
- Faulty Control Board: A malfunctioning control board may fail to process reset commands, leading to the F66 error.
- Electrical Connection Issues: Loose or damaged wiring can disrupt communication between components, causing the reset function to fail.
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. Attempting repairs without expertise may lead to further complications or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F66 fault could range around £150 to £300, primarily depending on whether the control board needs replacement or if wiring issues are present. This cost reflects the complexity of diagnosing and repairing electrical faults in boilers.