BoilerFaultCodesWhat the manual says
Manufacturer manualButton fault — verify all control buttons function; check PCB
Shared across the Murelle EV HE range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
DIY fix possible
Carefully press and release every button on the control panel to ensure none are physically stuck in the 'down' positionGently wipe the control panel with a dry cloth to remove any debris or sticky residueTurn the electrical power to the boiler off and back on to reset the control board
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Related fault codes
All 71 fault codes on the Murelle EV HE Combi
Seeing a different code? Every code this model can display, in one place.