BoilerFaultCodesBaxi 151 R Fault Code
Also written as 151R — same fault.
The Baxi 151 R fault code means: your boiler is failing to light the flame or keep it burning, which means your heating and hot water have stopped working.. It appears on 2 Baxi models in our database.
Technical description: Flame Failure
DIY fix possible
Check that your gas supply is turned on and other gas appliances like your hob are workingReset the boiler by turning the selector switch to 'R' and holding for at least five secondsEnsure the condensate pipe (the white plastic pipe outside) hasn't frozen in cold weather
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Baxi models that show the 151 R fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi 151 R 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