What does the Worcester Bosch Greenstar CDi F57 fault code mean?
The F57 fault code indicates a problem with the gas supply to the boiler, which may prevent it from operating correctly. This issue can arise from various factors affecting the gas flow or pressure.
Common Causes
- Blocked Gas Supply: A blockage in the gas line can restrict the flow of gas to the boiler, triggering the fault code.
- Faulty Gas Valve: If the gas valve is malfunctioning, it may not open or close properly, leading to insufficient gas supply.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for any issues related to gas supply or electrical components, as these can be dangerous if not handled correctly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F57 fault code could range from £150 to £300, depending on whether the issue is a simple blockage or requires replacement of the gas valve.