What does the Glow-worm Energy F57 fault code mean?
The F57 fault code indicates a fault with the domestic hot water (DHW) pump in the Glow-worm Energy boiler. This issue can prevent the boiler from effectively circulating hot water, leading to inadequate hot water supply.
Common Causes
- Blocked DHW Pump: Debris or scale buildup can obstruct the pump, preventing it from functioning properly.
- Electrical Fault: Issues with the wiring or connections to the pump can disrupt its operation, leading to the fault code being triggered.
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 repairs without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a DHW pump replacement is around £250 to £350, including parts and labour. This cost reflects the complexity of the repair and the need for a qualified technician.