I have a Ferroli HE38c and recently for some reason it has not been working, the display screen is blank with no codes and the boiler keeps on making this rumbling sound every few seconds.
fault on pcb [circuit board ]and needs replacing .if your desparate give boiler 3 sharp hits with back of fist on front of boiler bottom LHS .but call ferroli also 08515592924
ferroli engineer
May 2010
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