how can i fix my ariston genus he 24 mffi boiler?
when the water runs hot all of a sudden it starts cooling down and shows either E 33 or E 34 code then it clears and runs hot again this keeps happening on and off while the tap is running i looked at the pressure gauge and the marker is on the 2nd blue dot under the black ones if that makes any sense
scruff, September 2010
