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Connections on Ferroli F24 Gas Valve?

Replace a diverter valve?

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i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?

Hi how to increase the water pressure on ferroli optimax 25C?

F40 fault?

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I have a Ferroli FF 77 the pilot light has gone out will not stay on ?

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