What does the Worcester Bosch Greenstar i F44 fault code mean?
The F44 fault code on the Worcester Bosch Greenstar i indicates a problem with the diverter valve, which is responsible for directing hot water to either the heating system or the hot water taps. This fault can lead to issues such as no hot water or heating, requiring attention to restore proper function.
Common Causes
- Stuck Diverter Valve: The diverter valve may be stuck in one position, preventing it from switching between heating and hot water.
- Electrical Fault: There could be an electrical issue, such as a faulty actuator or wiring problem, affecting the diverter valve’s operation.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix the diverter valve without proper training may lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty diverter valve on a Worcester Bosch Greenstar i is around £250 to £350. This includes parts and labour, as diverter valves typically cost between £100 and £150, with the remainder covering the engineer’s time.