I'm just pulling your leg really, but I have heard of people returning home to find their kitchen flooded because one of the myriad o-rings or fittings has let go inside the machine. You don't need to worry about your plumbing fittings, if they let go it doesn't matter whether the machine is on or not.
Shouldn't have mentioned it, there's no more risk than leaving your central heating boiler running and nobody ever gives that a second thought.
I'm just pulling your leg really, but I have heard of people returning home to find their kitchen flooded because one of the myriad o-rings or fittings has let go inside the machine. You don't need to worry about your plumbing fittings, if they let go it doesn't matter whether the machine is on or not.
Shouldn't have mentioned it, there's no more risk than leaving your central heating boiler running and nobody ever gives that a second thought.