What does the Glow-worm Energy F24 fault code mean?
The F24 fault code on the Glow-worm Energy boiler indicates an overheating issue, which can lead to potential damage if not addressed promptly. This fault typically occurs when the boiler’s temperature exceeds safe operating limits, triggering a safety mechanism to prevent further overheating.
Common Causes
- Blocked Heat Exchanger: A buildup of debris or limescale can restrict water flow, causing the boiler to overheat.
- Faulty Thermostat: If the thermostat is malfunctioning, it may not accurately read the water temperature, leading to overheating.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous to handle without proper training. Attempting to fix it yourself may void your warranty and pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F24 fault could range from £150 to £300, depending on whether the issue is a simple thermostat replacement or a more complex heat exchanger cleaning or replacement.