I have a Hotpoint FDW70 dishwasher (by 2 users)

Disconect POWER at breaker or fuse panel which should be on a seperate braker. if not find the power sorce and unplug the device.

FOR SAFTEY Kneel on a thick doormat if you have to disconect power which has a plug. Wait for a an hour so to let all circuits, timers and motors to cool ... with diswasher in the OFF position,

Re-establish POWER. then go ahead and start washer as sugessted by the Manufacturer.

Make sure to notice any other codes that may appear. Or any peculiar noises.
Most default codes appear if water pressure is too low.

Top loaders are natorious for plugged drain lines and can be flushed by the home-ownwr.

Make sure to check that water strainer is not cloged or restricted.

Hotpoints CODES change from year to year, You can contact a Hotpoint Dealer in your area ... Give him the Make, Model, and any Series numbers to him. MOST will tell you what the CODES ARE FOR THAT MODEL OR EVEN E-MAIL ALL OF THEM TO YOU.

Good Luck ... Be Safe

Joe Rex