Re: ignis adl348 dishwasher – non draining. 4 flashes repeat
look to right side of sump with the filter out. you’ll see a ciculat black mesh. is it full of grease etc. behind this mesh is a diafram and a microswitch. this will give a four flash error if its empty and filling and a two flash error if its full and draining. if it does look choked up then remove the sump water with sponge or similar then fill sump with boiling water to clear the gunge. DO NOT poke anything through the mesh.
this is the simplest repair method if not then the switch assembly may have to be removed and replaced. the water in the base may be due to overfilling or the membrane in this switch may have perished.
hope this helps