What does the Baxi 600 Series E590 fault code mean?
The E590 fault code on the Baxi 600 Series indicates a blockage in the flue system that is preventing the proper venting of flue gases. This issue can lead to unsafe operating conditions and requires immediate attention to ensure safe boiler operation.
Common Causes
- Blocked Flue Terminal: Debris, snow, or bird nests can obstruct the flue terminal, preventing proper ventilation.
- Internal Flue Blockage: Accumulation of soot or other materials within the flue pipe can restrict airflow and cause the fault code to trigger.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer to diagnose and resolve this issue, as working on flue systems can be dangerous and requires professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E590 fault could range from £150 to £300, depending on whether the blockage is external or internal. If parts need to be replaced, such as the flue pipe, costs may increase accordingly.