What does the Baxi Duo-tec F44 fault code mean?
The F44 fault code on a Baxi Duo-tec boiler indicates a problem with the central heating temperature sensor. This fault can prevent the boiler from operating efficiently, leading to issues with heating performance.
Common Causes
- Faulty Temperature Sensor: The sensor may be malfunctioning or damaged, causing incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can lead to communication failures between the sensor and the boiler’s control board.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and gas safety regulations. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a central heating temperature sensor on a Baxi Duo-tec is approximately £150. This includes the cost of the part and labour, reflecting the complexity of the repair and the need for a qualified engineer.