What does the Glow-worm Energy F98 fault code mean?
The F98 fault code on the Glow-worm Energy boiler indicates a fault with the central heating (CH) control board. This typically means that the control board is not functioning correctly, which can prevent the boiler from operating as intended.
Common Causes
- Electrical Issue: A short circuit or loose connection in the wiring can disrupt the control board’s operation.
- Component Failure: A failure of the control board itself or associated components can lead to this fault code being displayed.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and safety risks. Attempting to fix it yourself may void warranties and could be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty control board on a Glow-worm Energy boiler is around £300 to £400. This includes the cost of the replacement part and labour, reflecting the complexity of the repair and the need for a qualified technician.