What does the Baxi 600 Series E250 fault code mean?
The E250 fault code on the Baxi 600 Series indicates a domestic hot water (DHW) overheat condition. This typically occurs when the temperature of the water exceeds safe operating limits, potentially due to a malfunctioning component.
Common Causes
- Faulty Temperature Sensor: A malfunctioning sensor may incorrectly read the water temperature, causing the boiler to overheat.
- Blocked Heat Exchanger: A blockage can restrict water flow, leading to overheating as the heat cannot dissipate properly.
Can I fix it myself? (DIY)
It is recommended 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 could void your warranty or lead to further damage.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E250 fault could range from £150 to £300, depending on whether the temperature sensor or heat exchanger needs replacement. This cost reflects the price of parts and labour for a qualified engineer.