What does the Glow-worm Flexicom F79 fault code mean?
The F79 fault code on the Glow-worm Flexicom indicates a faulty network connection, which can prevent the boiler from communicating with external controls or the internet. This issue may affect the boiler’s ability to operate efficiently and respond to commands.
Common Causes
- Network Connectivity Issues: Problems with the Wi-Fi signal or router settings can disrupt the connection between the boiler and the network.
- Faulty Control Board: A malfunctioning control board may fail to process network signals correctly, leading to the F79 error.
Can I fix it myself? (DIY)
If you are comfortable with basic troubleshooting, check your Wi-Fi connection and ensure the router is functioning properly. However, for any gas or electrical issues, it is crucial to call a Gas Safe Engineer to avoid safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F79 fault could range from £150 to £300, primarily depending on whether the issue is a simple network reset or requires replacement of the control board, which can be more expensive.