What does the Baxi 600 Series E410 fault code mean?
The E410 fault code indicates that the domestic hot water (DHW) temperature is exceeding safe limits, which can pose a risk of scalding. This fault typically suggests a malfunction in the temperature control system or a blockage in the heat exchanger.
Common Causes
- Faulty Temperature Sensor: A malfunctioning temperature sensor may fail to accurately read the water temperature, leading to overheating.
- Blocked Heat Exchanger: A blockage in the heat exchanger can restrict water flow, causing the water to overheat as it is unable to dissipate heat effectively.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that can be dangerous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E410 fault could be around £150 to £250, depending on whether the temperature sensor needs replacing or if the heat exchanger requires cleaning or replacement.