beko wm6152m stuck on draining?

Can anyone help, my washing machine is getting stuck when the cycle comes to the draining part.machine sounds like it wants to drain,the little water wheel is spinning but thats it,nothing alse happens. all pipes are clear of any obstacles but the only way to reset it is to manually drain the machine by the plug. I have cleaned all pipes and the problem still persists.

Please help.

Thanks
Mark