BoilerFaultCodesBaxi neon flashing (Burner lights) Fault Code
Also written as NEONFLASHINGBURNERLIGHTS — same fault.
The Baxi neon flashing (Burner lights) fault code means: your boiler is trying to start but cannot light the gas flame, meaning you will not have any heating or hot water.. It appears on 3 Baxi models in our database.
Technical description: Burner fails to light; refer to Section F.
DIY fix possible
Check that your gas emergency control valve is in the 'on' positionIf you have a prepaid gas meter, check that you have sufficient creditCheck if other gas appliances in your home, like a hob, are working correctlyReset the boiler by turning the selector switch to the 'R' position for at least five seconds
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like neon flashing (Burner lights): no call-out fees, no surprise bills.
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Baxi models that show the neon flashing (Burner lights) fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi neon flashing (Burner lights) 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 7 July 2026