What does the Worcester Bosch Greenstar Si F93 fault code mean?
The F93 fault code indicates a problem with the system interface of the Worcester Bosch Greenstar Si boiler. This typically suggests a communication issue between the boiler and its control panel or other components.
Common Causes
- Faulty Control Panel: The control panel may be malfunctioning, preventing proper communication with the boiler.
- Wiring Issues: Damaged or loose wiring connections can disrupt the signals between the boiler and its components.
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 dangerous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F93 fault code is around £150 to £250. This includes potential replacement of the control panel or repair of wiring, which are common issues associated with this fault.