What does the Glow-worm Energy F29 fault code mean?
The F29 fault code on the Glow-worm Energy boiler indicates a flame detection fault, meaning the boiler is unable to detect a flame when it should be firing. This can prevent the boiler from operating safely and efficiently.
Common Causes
- Faulty Flame Sensor: The flame sensor may be dirty or malfunctioning, preventing it from detecting the flame correctly.
- Gas Supply Issues: Insufficient gas supply or pressure can lead to the flame not being established, triggering the fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous if not handled properly. Attempting to fix it yourself could void your warranty and pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F29 fault could range from £100 to £250, depending on whether the flame sensor needs cleaning or replacement, as well as any additional diagnostics required.