How to fix Baxi 600 Series fault code E190

What does the Baxi 600 Series E190 fault code mean?

The E190 fault code on the Baxi 600 Series indicates a flue gas temperature fault, which suggests that the boiler is unable to properly monitor or control the temperature of the flue gases. This could lead to inefficient operation and potential safety hazards if not addressed promptly.

Common Causes

  • Blocked Flue: A blockage in the flue system can prevent proper ventilation, causing abnormal temperature readings.
  • Faulty Temperature Sensor: A malfunctioning flue gas temperature sensor may provide inaccurate readings, triggering the fault code.

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 an E190 fault could range from £150 to £300, depending on whether the issue is a simple sensor replacement or requires more extensive work on the flue system.