What does the Worcester Bosch Greenstar i F83 fault code mean?
The F83 fault code on the Worcester Bosch Greenstar i indicates a problem with the system’s water pressure or a fault in the system’s components. This can lead to the boiler not operating efficiently or shutting down entirely.
Common Causes
- Low Water Pressure: Insufficient water pressure in the system can trigger the F83 fault code, often due to leaks or insufficient filling.
- Faulty Components: Issues with internal components such as the pressure sensor or the expansion vessel can also cause this fault code to appear.
Can I fix it myself? (DIY)
If you are comfortable, you can check the water pressure gauge and attempt to refill the system if the pressure is low. However, for any gas or electrical issues, it is crucial to call a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F83 fault code could range from £150 to £300, depending on whether it involves simply refilling the system or replacing a faulty component like the pressure sensor.