What does the Worcester Bosch Greenstar i F29 fault code mean?
The F29 fault code indicates that the flue gas temperature is too high, which can lead to overheating and potential damage to the boiler. This fault typically suggests issues with the flue system or the boiler’s internal components that require immediate attention.
Common Causes
- Blocked Flue: A blockage in the flue can prevent proper ventilation, causing the flue gases to overheat.
- Faulty Temperature Sensor: A malfunctioning temperature sensor may incorrectly read the flue gas temperature, triggering the fault code.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous if handled improperly. Attempting DIY repairs could lead to safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F29 fault could range from £150 to £300, depending on whether the issue is a blocked flue or a faulty temperature sensor. This estimate includes diagnostic fees and potential parts replacement.