What does the Glow-worm Flexicom F88 fault code mean?
The F88 fault code on the Glow-worm Flexicom indicates a failure in the safety checks of the boiler, which may prevent it from operating safely. This could be due to issues with the flue system, air supply, or other critical safety components.
Common Causes
- Blocked Flue: A blockage in the flue can prevent proper ventilation, triggering safety checks to fail.
- Faulty Sensors: Malfunctioning temperature or pressure sensors can lead to incorrect readings, causing the boiler to shut down for safety.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any issues related to gas or electrical components. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F88 fault could range from £150 to £300, depending on whether the issue is a simple sensor replacement or a more complex flue blockage that requires extensive work.