What does the Glow-worm Betacom F49 fault code mean?
The F49 fault code on a Glow-worm Betacom boiler indicates a fault with the heat exchanger. This typically means there is an issue with the flow of water through the heat exchanger, which can affect the boiler’s ability to heat effectively.
Common Causes
- Blocked Heat Exchanger: Debris or scale buildup can restrict water flow, leading to overheating and triggering the fault code.
- Faulty Temperature Sensor: A malfunctioning sensor may incorrectly read temperatures, causing the boiler to shut down for safety reasons.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair the issue, as working on gas appliances can be dangerous. Attempting DIY repairs may void warranties and pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F49 fault could be around £300 to £500, depending on whether the heat exchanger needs cleaning or replacement. This cost reflects the complexity of the repair and the need for professional expertise.