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Hi all, For those suffering from similar problems I would suggest disconnecting all the cables from the PCB and reconnect them again. It appears that over a period of time the contacts tend to get slightly corroded and therefore the contacts are week. Reconnecting them again makes a firmer...

Hi all, With the heating in off position and all hot water taps in the closed position, indicator lights 1 and 4 are on. When any of the hot water taps are opened only lights 1 and 2 are on. This indicates that the problem is not the flowmeter but either the sensor or another problem...

Please help. I have a Ferroli combi boiler model Optima 801 and have an intermittant fault on the hot water side. When running the hot water tap or having a shower the hot water regularly goes cold and I have to switch the heating on and leave it for a few minutes before the water gets hot...