What does the Worcester Bosch Greenstar CDi F41 fault code mean?
The F41 fault code indicates a wiring issue within the Worcester Bosch Greenstar CDi boiler. This can result from damaged or loose connections that disrupt the electrical flow necessary for the boiler’s operation.
Common Causes
- Damaged Wiring: Physical damage to the wiring can lead to short circuits or open circuits, causing the F41 fault.
- Loose Connections: Poorly connected terminals or connectors can interrupt the electrical signals, triggering the fault code.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any electrical issues, as working with boiler wiring can be dangerous and requires professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F41 fault due to faulty wiring is approximately £150-£250. This includes the cost of diagnosing the issue and repairing or replacing any damaged wiring or connectors.