What does the Worcester Bosch Greenstar Ri F55 fault code mean?
The F55 fault code indicates a malfunction in the safety device of the boiler, which is crucial for ensuring safe operation. This fault typically suggests that the boiler has detected an unsafe condition that prevents it from functioning properly.
Common Causes
- Faulty Pressure Switch: The pressure switch may be stuck or malfunctioning, preventing the boiler from detecting the correct pressure levels.
- Blocked Flue: A blockage in the flue system can trigger safety devices, leading to the F55 fault code being displayed.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any issues related to gas or electrical components. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F55 fault code is around £150 to £250, depending on whether the pressure switch needs replacement or if the flue requires clearing. This cost reflects the need for professional service and parts.