What does the Worcester Bosch Greenstar CDi F75 fault code mean?
The F75 fault code indicates a problem with current monitoring within the boiler, which can affect its ability to operate efficiently. This issue typically arises from electrical faults or component failures that disrupt the normal functioning of the boiler.
Common Causes
- Electrical Connection Issues: Loose or damaged wiring can prevent proper current flow, leading to the F75 fault.
- Faulty Components: Components such as the pump or fan may be malfunctioning, causing the boiler to detect an abnormal current draw.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for this issue, as it involves electrical components that can be dangerous to handle without proper training. Attempting DIY repairs could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F75 fault could range from £150 to £300, depending on whether wiring repairs or component replacements are necessary. This estimate includes labour and parts, reflecting the complexity of diagnosing and fixing electrical issues in boilers.