What does the Glow-worm Flexicom F50 fault code mean?
The F50 fault code on a Glow-worm Flexicom boiler indicates a problem with the safety valve, which is responsible for releasing excess pressure from the system. This fault can prevent the boiler from operating safely and efficiently.
Common Causes
- Blocked Safety Valve: Debris or scale buildup can prevent the safety valve from functioning properly.
- Faulty Safety Valve: The valve itself may be defective or worn out, requiring replacement.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix safety valve issues without proper training can lead to serious safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty safety valve on a Glow-worm Flexicom boiler is around £150 to £250. This includes the cost of the replacement part and labour, as safety valves are critical components that require professional handling.