What does the Glow-worm Ultimate F52 fault code mean?
The F52 fault code on the Glow-worm Ultimate indicates a failure of the domestic hot water (DHW) pump. This issue can prevent the boiler from effectively supplying hot water, leading to inconvenience and potential further damage if not addressed promptly.
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 lead to a failure in operation.
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 could lead to further complications or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW pump is around £250 to £350. This includes the cost of the part and labour, reflecting the complexity of the repair and the need for a qualified technician.