How to fix Worcester Bosch Greenstar 8000 Lifestyle fault code E278

What does the Worcester Bosch Greenstar 8000 Lifestyle E278 fault code mean?

The E278 fault code indicates a pump reset error, which typically means that the heating system’s pump has failed to operate correctly. This can lead to inadequate circulation of water within the system, potentially causing overheating or other operational issues.

Common Causes

  • Blocked Pump: Debris or scale buildup can obstruct the pump, preventing it from functioning properly.
  • Electrical Fault: Issues with the wiring or connections to the pump can disrupt its operation, leading to the reset error.

Can I fix it myself? (DIY)

It is advisable to call a Gas Safe Engineer for this issue, as it involves electrical components and potential gas safety risks. Attempting to fix it yourself could lead to further complications or safety hazards.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for addressing the E278 fault code is around £150 to £250, primarily due to the need for a qualified engineer to diagnose and replace any faulty components, such as the pump or electrical connections.