What does the Worcester Bosch Greenstar CDi F33 fault code mean?
The F33 fault code on the Worcester Bosch Greenstar CDi indicates a problem with the printed circuit board (PCB), which is crucial for the boiler’s operation. This fault can prevent the boiler from functioning correctly, leading to heating and hot water issues.
Common Causes
- Electrical Faults: Issues such as short circuits or damaged wiring can affect the PCB’s performance.
- 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 handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the PCB on a Worcester Bosch Greenstar CDi is around £300 to £400. This cost reflects the price of the part and the labour involved in the replacement.