Re: Ariston AS150 Dishwasher
Neon one flashing suggests the base is flooded. May be due to the cardboard. UNPLUG and pull the machine out, then surround it with some towels and tilt it backwards or to one side. You will more than likely get water running out of the machine. If it then works you will need to monitor it for a few days. If the fault returns you may have an internal leak that will need investigating, with the plug removed of course.
Chances of getting a service manual are virtually nil.