BoilerFaultCodesWhat the manual says
Manufacturer manualButton fault — verify all control buttons function; check PCB
Shared across the Murelle Pro 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 check each button on the front panel to see if any are stuck in the pressed position.Gently press and release every button several times to ensure they move freely and click.Try resetting the boiler by turning the power off at the fused spur switch for 30 seconds and then back on.
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Related fault codes
All 45 fault codes on the Murelle Pro HE R MkII System
Seeing a different code? Every code this model can display, in one place.