What does the Worcester Bosch Greenstar i F75 fault code mean?
The F75 fault code on the Worcester Bosch Greenstar i indicates a problem with the system’s performance, often related to low water pressure or a fault in the heating system. This can prevent the boiler from operating efficiently and may require immediate attention.
Common Causes
- Low Water Pressure: Insufficient water pressure in the system can trigger the F75 fault, preventing the boiler from functioning properly.
- Blocked Filters or Pipes: Blockages in the system, such as dirt or debris in filters or pipes, can restrict water flow and lead to performance issues.
Can I fix it myself? (DIY)
If you suspect low water pressure, you can check the pressure gauge on your boiler and top up the system if necessary. However, for any gas or electrical issues, it is crucial to call a Gas Safe Engineer to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F75 fault could range from £150 to £300, depending on whether it involves simply repressurising the system or requires more extensive work such as cleaning blockages or replacing components.