What does the Worcester Bosch Greenstar i F86 fault code mean?
The F86 fault code on the Worcester Bosch Greenstar i indicates an issue related to faulty system upgrades, which may affect the boiler’s performance and efficiency. This typically suggests that the boiler’s software or configuration is not aligned with the current system setup.
Common Causes
- Incompatible Software Update: A recent software update may not be compatible with the existing system configuration, leading to the F86 error.
- Incorrect System Settings: Changes made to the system settings or configurations that do not match the boiler’s requirements can trigger this fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to resolve this issue, as it involves system configurations and software updates that require professional expertise. Attempting to fix it yourself may lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F86 fault code is around £150 to £250. This includes the cost of a professional service visit and any necessary software adjustments or reconfigurations.