What does the Glow-worm Energy F58 fault code mean?
The F58 fault code indicates a central heating (CH) pump fault in the Glow-worm Energy boiler. This typically means that the pump is either not operating correctly or has failed, preventing the circulation of hot water through the heating system.
Common Causes
- Blocked Pump: Debris or sludge in the system can obstruct the pump, leading to failure.
- Electrical Fault: Issues with the pump’s wiring or connections can prevent it from receiving power.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and potential gas safety risks. Attempting to fix it yourself may void warranties or lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a central heating pump replacement is around £300 to £400. This includes parts and labour, as the pump itself typically costs between £150 and £250, with the remainder covering the engineer’s time and expertise.