What does the Baxi 600 Series E510 fault code mean?
The E510 fault code on the Baxi 600 Series indicates a fault with the domestic hot water (DHW) temperature sensor. This issue can prevent the boiler from heating water to the desired temperature, affecting hot water availability.
Common Causes
- Faulty Temperature Sensor: The temperature sensor may be malfunctioning or damaged, leading to inaccurate readings.
- Wiring Issues: Damaged or loose wiring connections to the temperature sensor can disrupt its functionality.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that can be hazardous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW temperature sensor on a Baxi 600 Series boiler is around £150 to £200. This includes the cost of the part and labour, reflecting the complexity of the repair.