What does the Worcester Bosch Greenstar Si F38 fault code mean?
The F38 fault code indicates a malfunction with the water temperature sensor in the Worcester Bosch Greenstar Si boiler. This sensor is crucial for monitoring and regulating the water temperature, and its failure can lead to inefficient heating or safety issues.
Common Causes
- Faulty Temperature Sensor: The sensor may be damaged or malfunctioning, leading to inaccurate readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt its function and trigger the fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to address this issue, as it involves gas and electrical components that require professional expertise. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the water temperature sensor is around £150 to £200. This includes the cost of the part and labour, reflecting the typical pricing for professional repairs in the UK.