What does the Baxi 600 Series E580 fault code mean?
The E580 fault code indicates that the domestic hot water (DHW) is overheating, which can pose a risk of scalding and indicates a malfunction within the boiler’s heating system. This fault requires immediate attention to ensure safe operation and prevent further damage to the unit.
Common Causes
- Faulty Temperature Sensor: A malfunctioning temperature sensor may incorrectly read the water temperature, causing the boiler to overheat.
- Blocked Heat Exchanger: A blockage in the heat exchanger can restrict water flow, leading to overheating as the water cannot circulate properly.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous if handled improperly. Attempting to fix it yourself may void any warranty and could lead to safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E580 fault could range from £150 to £300, depending on whether the temperature sensor needs replacing or if the heat exchanger requires cleaning or replacement. This cost reflects the complexity of the repairs and the need for a qualified technician.