BoilerFaultCodesBaxi E1 Fault Code
The Baxi E1 fault code means: your boiler has become too hot and has shut down as a safety precaution to prevent damage.. It appears on 1 Baxi model in our database.
Technical description: Overheated – try bleeding your radiators
DIY fix possible
Turn off the boiler and allow it to cool down completely.Bleed all radiators using a radiator key to remove trapped air.Check that your system pressure is at the correct level (usually 1.0 to 1.5 bar).Press the reset button on the boiler control panel.
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Baxi models that show the E1 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi E1 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