Ariston Microsystem 21 RFFI - Failure to Reset from lockout

17 Dec 2009
Reaction score
United Kingdom
Please help - The boiler locked out after the gas supply ran out. Since then the reset button will not reset and the light remains on constantly. I have run through the diagnostics and followed flow charts (which are useless) I replaced PCB2 this made no difference, I have now replaced PCB1 only to find this hasn't worked either. The detection electrode, ignition electrodes, spark generator have also been replaced, to no avail.

Can anyone out there please put me out of my misery and help - my wallet is taking a battering as a result and I am no further forward in getting the boiler to re start!! :rolleyes:
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