What does the Glow-worm Energy F88 fault code mean?
The F88 fault code on the Glow-worm Energy boiler indicates a central heating combustion fault, which typically means the boiler is unable to ignite or maintain combustion. This can lead to a lack of heating and hot water in the system.
Common Causes
- Insufficient Gas Supply: A blockage or issue in the gas supply line can prevent the boiler from receiving the necessary gas for combustion.
- Faulty Ignition Components: Problems with the ignition electrode or the gas valve can hinder the ignition process, leading to the F88 fault.
Can I fix it myself? (DIY)
It is highly recommended 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 with the gas supply or requires replacement of ignition components. This estimate includes parts and labour for a qualified engineer.