Low
Fan/Flue LED Green on Baxi Solo 3 40 PF

Your boiler is correctly sensing that the fan is pushing air through the system, which is a normal part of the startup sequence.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

DIY fix possible

Check that the external flue pipe is not blocked by debris or nestsEnsure the electricity supply to the boiler is stableIf the light stays on but the boiler doesn't fire, try resetting the power at the fused spur

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