What does the Worcester Bosch Greenstar i F55 fault code mean?
The F55 fault code indicates a problem with the system temperature, which may be due to incorrect readings from the temperature sensors or issues with the boiler’s control system. This can lead to inefficient heating or potential safety concerns if not addressed promptly.
Common Causes
- Faulty Temperature Sensor: The temperature sensor may be malfunctioning, providing inaccurate readings to the boiler’s control system.
- Control Board Issues: A fault in the boiler’s control board can lead to incorrect temperature management, triggering the F55 error code.
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. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F55 fault could range from £150 to £300, primarily depending on whether the temperature sensor or control board needs replacement. This cost reflects the complexity of the repair and the need for professional service.