What does the Glow-worm Flexicom F25 fault code mean?
The F25 fault code on the Glow-worm Flexicom indicates an ignition failure, meaning the boiler is unable to ignite the gas to start the heating process. This issue can prevent the boiler from functioning properly, leading to a lack of hot water and heating.
Common Causes
- Blocked Flue: A blockage in the flue can prevent the safe expulsion of gases, causing ignition failure.
- Faulty Ignition Electrode: If the ignition electrode is damaged or dirty, it may not create the necessary spark to ignite the gas.
Can I fix it myself? (DIY)
While some issues may be resolved by checking and resetting the boiler, it is crucial to call a Gas Safe Engineer for any gas or electrical problems to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F25 fault could range from £100 to £250, depending on whether the ignition electrode needs replacement or if the flue requires clearing. This estimate includes parts and labour for a qualified engineer.