What does the Worcester Bosch Greenstar Ri F94 fault code mean?
The F94 fault code indicates that the boiler has detected a limitation in the system, which may prevent it from operating correctly. This could be due to issues such as low water pressure or a fault in the heating system.
Common Causes
- Low Water Pressure: Insufficient pressure in the system can trigger the F94 fault, preventing the boiler from functioning properly.
- Faulty Sensors: Malfunctioning temperature or pressure sensors can incorrectly signal system limitations, leading to the F94 error.
Can I fix it myself? (DIY)
If the issue is related to low water pressure, you can attempt to repressurise the system by following the manufacturer’s instructions. 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 F94 fault could range from £150 to £300, depending on whether it involves repressurising the system or replacing faulty sensors. This estimate reflects the cost of labour and parts required for the repair.