so my boiler started to trip the electrics an being an electrician i checked all wiring out an was all looking fine. Water pressure switch was so corrouded it literally just fell to pieces when touched. Ordered a new one an left the boiler of for time being. Took the old one out an put new one in, replaced wires like for like but now when i try to fire the boiler up it only does for 2 seconds an then the water light blinks an so does the electric warning light. Water pressure switch had 2 orange wires which feed com and no and a blank that covers nc. Any ideas guys? Boiler is a ferroli modena 102 combi. Thanks
