BoilerFaultCodesBaxi 270 Fault Code
The Baxi 270 fault code means: your boiler has detected that water isn't moving through the system properly, which is causing it to overheat too quickly and shut down for safety.. It appears on 3 Baxi models in our database.
Technical description: Circulation Fault (Dry Fire)
DIY fix possible
Check that your radiator valves and isolation valves are fully openEnsure the system pressure is between 1.0 and 1.5 bar on the gaugeBleed your radiators to remove any trapped air pocketsReset the boiler by turning the selector switch to 'R' for five seconds
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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 31 August 2026