What does the Glow-worm Ultimate F37 fault code mean?
The F37 fault code on the Glow-worm Ultimate boiler indicates a fault with the printed circuit board (PCB). This issue can disrupt the boiler’s operation, leading to heating and hot water failures.
Common Causes
- PCB Failure: The PCB may have developed a fault due to age, wear, or electrical issues, preventing it from functioning correctly.
- Electrical Connections: Loose or damaged electrical connections to the PCB can cause communication errors, triggering the F37 fault code.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for this issue, as working on the PCB involves electrical components that can be dangerous. Attempting repairs without proper training can lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F37 fault due to a PCB replacement is approximately £300 to £400. This includes the cost of the new PCB and labour, as it requires professional installation to ensure safety and compliance.