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Nuova Simonelli Oscar Boiler Won't Fill or Heat Up

I've been using a Nuova Simonelli Oscar for about a year now and just recently I've been having trouble getting the boiler to fill and begin heating up when I first turn the machine on. I have to depress the espresso dispensing button first, then cyc

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Nuova Simonelli Oscar Boiler Won't Fill or Heat Up

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