What does the Worcester Bosch Greenstar 8000 Lifestyle E204 fault code mean?
The E204 fault code indicates that the pump within the boiler is overheating, which can lead to potential damage if not addressed promptly. This issue typically arises due to a lack of water flow or a malfunctioning pump.
Common Causes
- Blocked System: Debris or sludge in the heating system can restrict water flow, causing the pump to overheat.
- Faulty Pump: A malfunctioning or worn-out pump may not operate efficiently, leading to overheating.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer to diagnose and repair the issue, especially if it involves gas or electrical components. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E204 fault could range from £150 to £300, depending on whether the pump needs to be replaced or if the system requires flushing to remove blockages.