What does the Worcester Bosch Greenstar Ri F85 fault code mean?
The F85 fault code indicates a problem with the system logging functionality of the boiler. This issue may prevent the boiler from properly recording operational data, which can affect its performance and diagnostics.
Common Causes
- Faulty PCB: A malfunctioning printed circuit board (PCB) can disrupt the logging process, leading to the F85 error.
- Wiring Issues: Damaged or loose wiring connections can interfere with the communication between components, causing logging failures.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and safety risks. Attempting to fix it yourself could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F85 fault could range from £150 to £300, primarily depending on whether the PCB needs replacement or if wiring repairs are necessary.