What does the Baxi Duo-tec F29 fault code mean?
The F29 fault code on a Baxi Duo-tec 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 to ensure safe operation.
Common Causes
- Faulty Flame Sensor: The flame sensor may be dirty or malfunctioning, preventing it from detecting the flame accurately.
- Gas Supply Issues: Insufficient gas supply or pressure problems 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 any issues related to gas or electrical components. Attempting to fix these issues without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F29 fault could range from £100 to £200, primarily depending on whether the flame sensor needs cleaning or replacement, as well as any potential gas supply adjustments.