What does the Worcester Bosch Greenstar CDi F79 fault code mean?
The F79 fault code on the Worcester Bosch Greenstar CDi indicates a warranty issue, typically related to the boiler’s components or installation. This code suggests that the boiler may not be functioning correctly due to a fault that is covered under warranty.
Common Causes
- Warranty Registration Issue: The boiler may not be registered properly for warranty coverage, leading to this fault code.
- Component Failure: A failure in a key component that is covered by warranty could trigger this fault, necessitating a professional assessment.
Can I fix it myself? (DIY)
It is recommended to contact a Gas Safe Engineer to address this issue, as it may involve warranty claims and technical assessments that require professional expertise.
Estimated Repair Cost (2026 UK Prices)
Repair costs can vary, but if a component needs replacement under warranty, the cost may be minimal or covered entirely. However, if registration issues are present, resolving them may incur administrative fees around £50-£100.