What does the Worcester Bosch Greenstar CDi F49 fault code mean?
The F49 fault code indicates a problem with the thermostat in the Worcester Bosch Greenstar CDi boiler. This typically means that the thermostat is either faulty or not communicating correctly with the boiler’s control system.
Common Causes
- Faulty Thermostat: The thermostat may have failed due to wear and tear or internal component failure.
- Wiring Issues: Damaged or loose wiring connections between the thermostat and the boiler can disrupt communication.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that require professional expertise to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty thermostat on a Worcester Bosch Greenstar CDi is around £150 to £250. This includes the cost of the part and labour, as thermostats can vary in price and installation complexity.