What does the Worcester Bosch Greenstar i F94 fault code mean?
The F94 fault code indicates that the boiler has detected a fault with the system reports, which may suggest issues with the communication between the boiler and the system components. This can lead to operational inefficiencies or complete shutdown of the heating system.
Common Causes
- Faulty Sensor: A malfunctioning sensor may fail to provide accurate readings, causing the system to report errors.
- Wiring Issues: Damaged or loose wiring connections can disrupt communication between the boiler and its components, leading to fault codes.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair the issue, as it may involve gas or electrical components that require professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F94 fault could range from £150 to £300, depending on whether a sensor replacement or wiring repair is needed. This estimate includes parts and labour costs associated with a qualified engineer’s service.