What does the Worcester Bosch Greenstar Si F92 fault code mean?
The F92 fault code indicates a communication failure within the heating system of the Worcester Bosch Greenstar Si boiler. This can prevent the boiler from operating correctly, leading to heating and hot water issues.
Common Causes
- Faulty Wiring: Damaged or loose connections in the wiring can disrupt communication between components.
- Defective PCB: A malfunctioning printed circuit board (PCB) may fail to process signals properly, causing communication errors.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and safety risks. Attempting DIY repairs could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F92 fault code is around £150 to £300, depending on whether wiring repairs or a PCB replacement is needed. The PCB replacement tends to be more expensive due to the part cost and labour involved.