What does the Worcester Bosch Greenstar Ri F93 fault code mean?
The F93 fault code indicates that the boiler has detected a problem with the system capabilities, which may affect its ability to operate efficiently. This can be related to issues with the system pressure, flow rates, or other operational parameters.
Common Causes
- Low System Pressure: Insufficient water pressure in the system can trigger this fault code, preventing the boiler from functioning correctly.
- Faulty Sensors: Malfunctioning temperature or pressure sensors may provide incorrect readings, leading to the F93 error.
Can I fix it myself? (DIY)
If you are comfortable, check the system pressure and ensure it is within the recommended range (typically 1-1.5 bar). If the pressure is low, you can top it up using the filling loop. However, for any gas or electrical issues, it is crucial to call a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F93 fault could range from £150 to £300, depending on whether it requires a simple pressure adjustment or replacement of faulty sensors.