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ferolli boiler problem?

why does the pump run all the when not calling for heating or hot water i have ferolli boiler
madman, April 2010
may be faulty circuit board with pump overrun circuit stuck on.
are you sure it's the pump? on some ferrolli's the fan runs constantly, at low rate when no demand

Ian, April 2010
link Click here to see other fixes for Ferroli.