What does the Worcester Bosch Greenstar i F58 fault code mean?
The F58 fault code indicates an issue with the system venting, which can lead to improper combustion and potential safety hazards. This fault typically suggests that the boiler is unable to vent exhaust gases effectively, which may require immediate attention.
Common Causes
- Blocked Flue: A blockage in the flue system can prevent proper venting of exhaust gases, triggering the F58 fault code.
- Incorrect Installation: If the boiler was not installed according to manufacturer guidelines, it may lead to venting issues.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer to diagnose and repair this fault, as it involves gas and safety regulations. Attempting to fix venting issues without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F58 fault code is around £150 to £300, depending on the specific cause. This includes potential flue cleaning or reinstallation costs if the issue is due to improper setup.