What does the Baxi 600 Series E240 fault code mean?
The E240 fault code on the Baxi 600 Series indicates a domestic hot water (DHW) temperature fault, which typically means the boiler is unable to heat the water to the required temperature. This can lead to insufficient hot water supply for taps and showers.
Common Causes
- Faulty DHW Sensor: The sensor may be malfunctioning, causing incorrect temperature readings.
- Blocked Heat Exchanger: A blockage can prevent proper heat transfer, leading to inadequate heating of the water.
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 to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E240 fault could range from £150 to £300, depending on whether the DHW sensor needs replacing or if the heat exchanger requires cleaning or replacement.