What does the Glow-worm Energy F31 fault code mean?
The F31 fault code on a Glow-worm Energy boiler indicates a gas valve fault, which typically means the boiler is unable to regulate the gas supply properly. This can lead to issues with ignition or maintaining the desired temperature.
Common Causes
- Faulty Gas Valve: The gas valve may be malfunctioning or completely failed, preventing the correct amount of gas from reaching the burner.
- Electrical Issues: Problems with the wiring or connections to the gas valve can disrupt its operation, leading to the F31 fault code.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any gas-related issues, including those involving the gas valve. Attempting to fix it yourself can be dangerous and is not recommended.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F31 fault code is approximately £250 to £350, which includes the replacement of the gas valve and associated labour costs. This price reflects the complexity of the repair and the need for a qualified technician.