What does the Worcester Bosch Greenstar Ri F40 fault code mean?
The F40 fault code on the Worcester Bosch Greenstar Ri indicates a problem with the control board, which is responsible for managing the boiler’s operations. This fault can lead to the boiler being unable to function properly, resulting in heating and hot water issues.
Common Causes
- Electrical Faults: Issues such as short circuits or damaged wiring can affect the control board’s performance.
- Component Failure: Components on the control board may fail due to age or manufacturing defects, leading to the F40 error.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for this issue, as working with the control board involves electrical components that can be dangerous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the control board on a Worcester Bosch Greenstar Ri is around £300 to £400. This includes the cost of the part and labour, reflecting the complexity of the repair and the need for a qualified technician.