Neff Dishwasher. Hi; I have a Neff slimline Dishwasher that won't fill with water but works ok if

Question

Hi; I have a Neff slimline Dishwasher that won't fill with water but works ok if I fill with a bucket. I have searched the net and found that it probably has either a stuck float or a faulty inlet valve. The probelm is I can't find these things. Should I pull it out and turn it upside down or what? And if I do need to replace one of these where can I get them from? I have tried a search online but can't find them.