What does the Glow-worm Energy F97 fault code mean?
The F97 fault code indicates a fault with the domestic hot water (DHW) control board in the Glow-worm Energy boiler. This issue can prevent the boiler from properly regulating hot water supply, leading to inconsistent or no hot water availability.
Common Causes
- Faulty DHW Control Board: The control board may have developed a fault due to electrical issues or component failure.
- Wiring Issues: Damaged or loose wiring connections to the DHW control board can disrupt its functionality.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and gas safety regulations. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW control board is around £250 to £350, including parts and labour. This cost reflects the complexity of the repair and the need for a qualified technician to ensure safety and compliance.