What does the Glow-worm Flexicom F66 fault code mean?
The F66 fault code on a Glow-worm Flexicom boiler indicates a problem with the main burner, which may be failing to ignite or maintain a flame. This can lead to the boiler not providing heating or hot water as required.
Common Causes
- Blocked Burner: Debris or soot accumulation can obstruct the burner, preventing proper ignition.
- Faulty Ignition Electrode: If the ignition electrode is damaged or malfunctioning, it may not create the necessary spark to ignite the gas.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous if handled improperly. Attempting to fix it yourself could lead to safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F66 fault could range from £150 to £300, depending on whether the burner needs cleaning or if the ignition electrode requires replacement. This cost reflects the complexity of the repair and the need for a qualified technician.