Aquarius FDW70 showing code AO3?

hi a03 is a drainage fault.check outlet pipe for kinks or where it goes to for a blockage.if all appears ok you will have to remove and inspect the pump for a foreign object jamming the pumps impeller.firstly unplug dw,bail out as much water as you can.remove the right hand side panel,although space is limited.I prefer to lay the dw on its back and remove the bottom.hands too big lol,the drainage pump is on the end of the pipe you previously checked for a kink etc.have some towels ready for water when you remove the pump.if all appears ok and the impeller turns freely then the problem could be a faulty pump.but these pumps seldom fail.meter the pump for a/c voltage.if no reading then the problem is the thermistor.on your model the thermistor is part of the pcb.you will have to purchase the whole card.it is not uncommon for this model to take out the thermistor when the pump gets jammed.hope its just the pump in your case but the duel fault does present itself most frequently.anyway good luck with it.

ozone
November 2011