BoilerFaultCodesBaxi 270 Fault Code
The Baxi 270 fault code means: your boiler has detected that it is heating up very quickly without enough water flowing through it, meaning it is at risk of overheating.. It appears on 2 Baxi models in our database.
Technical description: Dry fire
DIY fix possible
Check if your system water pressure is too low and top it up using the filling loopEnsure all radiator valves are open and not stuck shutTry resetting the boiler using the reset button once pressure is corrected
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Baxi models that show the 270 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi 270 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