Re: Diplomat ADP8520 dishwasher
This is a Haier dishwasher – we do not have a listing for the fault codes on these.
Applying a little logic, the first action on a dishwasher programme is to run the drain pump. As you say that there is water in the machine, it would be reasonable to assume that there is some sort of blockage. Can you hear the drain pump running? If you can, check the sink coupling where the hose joins on. If you can’t hear it running or there is a faint humming noise, the pump itself will be blocked.
You will have to drag the machine out for access from underneath; be warned that this is a very awkward appliance to work on – none of the metalwork is finished, so be careful.
Power off, of course.
Regards,
Penguin45.