What does the Worcester Bosch Greenstar Ri F74 fault code mean?
The F74 fault code indicates that there are faulty user settings within the boiler’s control system. This can prevent the boiler from operating correctly and may require adjustment or reset of the settings.
Common Causes
- Incorrect Temperature Settings: The user may have set the temperature too low or too high, causing the boiler to malfunction.
- Faulty Control Panel: A malfunction in the control panel or user interface can lead to incorrect readings and settings being displayed.
Can I fix it myself? (DIY)
If you are comfortable with basic troubleshooting, you can try resetting the boiler by turning it off and on again. However, for any gas or electrical issues, it is strongly advised to call a qualified Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F74 fault could be around £120 to £180, primarily for recalibrating the control panel or replacing it if necessary. This cost reflects the complexity of the control systems in modern boilers.