hi can anyone help please. dishwasher is switched on and can hear motor but nothing else happens. no water nothing. the tablet is still in the dispenser. i have never put salt in the compartment as i was told the tablets already have these in but i opened the salt compartment on bottom on floor and its full of water is it suppose to be? twisted and lifted the bottom filter but nothing in there to clear about 1cm of water in the bottom. kept the filter lid off and added hot water from kettle water would not drain away. had a feel and can feel some kind of valve. when i start a programme and leave the door open this water spins around but nothing comes out of the spray arms and they do not move. twisted off the spray arms and they are not blocked. dont know what else to try