What does the Worcester Bosch Greenstar Ri F88 fault code mean?
The F88 fault code indicates a faulty system feedback, which typically means that the boiler is not receiving the correct signals from the system components. This can lead to operational issues and may prevent the boiler from functioning properly.
Common Causes
- Faulty Sensor: A malfunctioning temperature or pressure sensor can disrupt the feedback loop, causing the F88 error.
- Wiring Issues: Damaged or loose wiring connections between the boiler and system components can lead to incorrect feedback signals.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and safety risks. Attempting to fix it yourself could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F88 fault code is around £150-£250, primarily due to the potential need for sensor replacement or wiring repairs, which can be labour-intensive.