What does the Worcester Bosch Greenstar Ri F45 fault code mean?
The F45 fault code on the Worcester Bosch Greenstar Ri indicates a problem with the hot water sensor, which is responsible for monitoring the temperature of the water. This issue can lead to inadequate hot water supply or overheating, affecting the boiler’s performance.
Common Causes
- Faulty Hot Water Sensor: The sensor may be malfunctioning or damaged, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt its functionality, causing the fault code to appear.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to address this issue, as it involves electrical components and safety risks. Attempting DIY repairs could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the hot water sensor on a Worcester Bosch Greenstar Ri is approximately £150 to £200. This includes the cost of the part and labour, reflecting the complexity of the repair and the need for a qualified technician.