Diplomat Dishwasher ADP 8132?

We bought a intergrated Diplomat Dishwasher ADP8132 off of Ebay recently, however we do not have a manual, finally got it connected, last week only to find when i turn it on the 4th Light (super) flashes and i cant get it too work. Never had a dishwasher before so i am scared i have bought a dud! Have looked in the salt thing and it is full of liquid but i have no idea if that is good or bad!!

Any help would be greatly appreciated i have tried the press the p button four times in 3 secs but to no avail is there a correct time to press the button?? i.e after the beeps or before the light starts flashing?