What does the Worcester Bosch Greenstar 8000 Lifestyle F22 fault code mean?
The F22 fault code indicates a dry fire condition or low pressure within the system. This typically means that the boiler is unable to operate due to insufficient water pressure or a lack of water flow.
Common Causes
- Low Water Pressure: The pressure gauge may read below the recommended level, often due to leaks or insufficient water in the system.
- Blocked or Faulty Components: Issues such as a blocked pump or faulty sensors can prevent proper water circulation, leading to a dry fire condition.
Can I fix it myself? (DIY)
You can attempt to fix low water pressure by checking the pressure gauge and re-pressurising the system if necessary. However, if the issue persists or involves gas or electrical components, it is crucial to call a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F22 fault could range from £150 to £300, depending on whether it requires a simple pressure adjustment or replacement of components like the pump or pressure sensor.