Miele Waterproof System Activated . Waterproof system activated close stopcock error coming up on my miele was. I have tipped the machine forward and water came out, and the machine worked again for one wash but then got the same fault again. Pin on White Goods from www.pinterest.com Miele kitchen appliance dishwasher miele hg01 waterproof system, program sequence indicator (14), time display (18), at the end of a program. You can unplug it and pull it out, then remove the rear panel and check the drain pump and hoses attached to it. In this case the water level in the appliance rises until it overflows into the drip pan where the float switch is activated.