What does the Worcester Bosch Greenstar Si F94 fault code mean?
The F94 fault code indicates a problem with the system user interface of the Worcester Bosch Greenstar Si boiler. This typically means that the control panel or display is malfunctioning, preventing proper communication between the user and the boiler.
Common Causes
- Faulty Control Panel: The control panel may have developed a fault, leading to incorrect readings or a complete failure to respond.
- Wiring Issues: Damaged or loose wiring connections between the control panel and the boiler can disrupt functionality, causing the F94 error.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components that can be hazardous. Attempting to fix it yourself may void warranties or lead to further damage.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F94 fault code is around £150 to £250. This includes the potential replacement of the control panel and associated labour costs, which are necessary for ensuring safe and proper operation.