Re: diplomat dishwasher adp8221
There is a blockage somewhere, or the pump is jammed/faulty.
Firstly check where the drain hose goes…if it attaches to the plumbing under the sink then you may be able to check there is no blockage at that point. If you can disconnect the hose at that point and put it in a bucket…run the machine and see if it drains. If it does then the blockage is in the drain plumbing, if not then you will need an engineer.