Fan/Flue LED Green Low

Baxi Fan/Flue LED Green Fault Code

Also written as FANFLUELEDGREEN — same fault.

The Baxi Fan/Flue LED Green fault code means: your boiler has successfully started its fan and confirmed safe airflow, meaning it is currently in its normal startup sequence or operation mode.. It appears on 2 Baxi models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Pressure switch has closed and the fan is running
Typical repair cost £0-120 (including labour)

DIY fix possible

Check that the external flue terminal is not blocked by debris or leavesEnsure the power supply to the boiler is consistentMonitor the boiler to ensure it proceeds to the ignition stage (Burner LED)

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Baxi models that show the Fan/Flue LED Green fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi Fan/Flue LED Green fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026