What does the Worcester Bosch Greenstar i F31 fault code mean?
The F31 fault code on the Worcester Bosch Greenstar i indicates a problem with the printed circuit board (PCB), which is essential for the boiler’s operation. This fault typically suggests that the PCB is either malfunctioning or has failed, affecting the boiler’s ability to function correctly.
Common Causes
- Electrical Faults: Issues such as short circuits or damaged wiring can lead to PCB failure.
- Component Failure: Components on the PCB, like relays or capacitors, may wear out over time, causing the fault.
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 handled incorrectly. Attempting to fix it yourself may void warranties and pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the PCB on a Worcester Bosch Greenstar i is around £300 to £400. This cost includes the price of the part and labour, reflecting the complexity of the repair and the expertise required.