Medium
H.02 – .03 on Baxi EP

Your boiler is having a temporary 'handshake' issue where its internal control settings don't quite match what the hardware expects, usually following a power cut or a recent service.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Temporary error- incorrect configuration settings C1/C2.

DIY fix possible

Locate the reset button or selector switch on the front of the control panel.Press and hold the reset button for at least 5 seconds, then release.Wait for the boiler to complete its startup sequence; if the code clears, use the heating as normal.

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