What does the Worcester Bosch Greenstar CDi F31 fault code mean?
The F31 fault code indicates a problem with the fan in the Worcester Bosch Greenstar CDi boiler. This typically means the fan is either not functioning correctly or has failed, preventing the boiler from operating safely.
Common Causes
- Blocked Fan: Debris or obstruction can prevent the fan from spinning properly.
- Electrical Fault: Issues with the wiring or connections to the fan can lead to malfunction.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any repairs related to the fan, as it involves gas and electrical components that can be dangerous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty fan in a Worcester Bosch Greenstar CDi boiler is approximately £250 to £350. This includes the cost of the replacement part and labour, reflecting the complexity of the work involved.