Anybody know what the pressure gauge on an Ariston Combi should read?
Son has just bought his first house and the boiler gauge is at 3 bar and
the water constantly drips from the overflow / expansion pipe when
running. Also the fill loop valve appears to be constantly open.
I am guessing the gauge should read between 0.5 and 1.5 bar, but it is
only a guess.
Many thanks


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