What does the Worcester Bosch Greenstar Ri F90 fault code mean?
The F90 fault code on the Worcester Bosch Greenstar Ri indicates a problem with the system upgrades, which may affect the boiler’s performance and efficiency. This fault typically arises from issues related to the software or configuration settings of the boiler.
Common Causes
- Software Glitch: A temporary malfunction in the boiler’s software can lead to the F90 error, often resolved by resetting the system.
- Incorrect Configuration: If the boiler has been recently upgraded or serviced, incorrect settings may trigger this fault code.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer for this issue, as it involves software and configuration that require professional expertise. Attempting to fix it yourself may lead to further complications or safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F90 fault code is around £150 to £250. This includes the cost of a professional service visit and potential software updates or reconfigurations needed to rectify the issue.