What does the Glow-worm Flexicom F29 fault code mean?
The F29 fault code on a Glow-worm Flexicom boiler indicates a flame detection fault, meaning the boiler is unable to detect a flame during operation. This can prevent the boiler from functioning properly and may require immediate attention.
Common Causes
- Blocked Flue: A blockage in the flue can prevent proper ventilation, leading to flame detection issues.
- Faulty Flame Sensor: A malfunctioning flame sensor may fail to detect the flame, triggering the F29 fault code.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any gas or electrical issues, including those related to flame detection. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F29 fault could be around £150 to £250, depending on whether the issue is a simple cleaning of the flue or requires replacement of the flame sensor.