What does the Glow-worm Flexicom F33 fault code mean?
The F33 fault code on a Glow-worm Flexicom boiler indicates a problem with the printed circuit board (PCB), which is responsible for controlling various functions of the boiler. This fault can lead to the boiler not operating correctly or failing to ignite.
Common Causes
- Electrical Faults: Issues such as short circuits or damaged wiring can affect the PCB’s functionality.
- Component Failure: Components on the PCB may fail due to age or manufacturing defects, leading to the F33 error.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for this issue, as working with the PCB involves electrical components that can be dangerous if not handled properly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty PCB in a Glow-worm Flexicom boiler is around £250 to £350. This includes the cost of the part and labour, as PCB replacement requires technical expertise.