What does the Baxi 600 Series E860 fault code mean?
The E860 fault code indicates a problem with the domestic hot water (DHW) chamber temperature, suggesting that the temperature is either too high or too low for safe operation. This fault can prevent the boiler from providing hot water effectively.
Common Causes
- Faulty Temperature Sensor: The temperature sensor may be malfunctioning, leading to incorrect readings and triggering the fault code.
- Blocked Heat Exchanger: A blockage in the heat exchanger can restrict water flow, causing temperature discrepancies and resulting in the E860 error.
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 require professional expertise. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E860 fault could range from £150 to £300, depending on whether the temperature sensor needs replacement or if the heat exchanger requires cleaning or servicing.