Did you remember to turn the valve back on for the water supply? also did you turn off the breaker while moving it to prevent shorts?

When you say breather cap do you mean aerator? DId you check that for debris inside the cap? That's a common problem with no drain issues because it doesn't take much to clog those. Also some drain hoses have flaps near the motor mount on the hose that prevents backflow sometimes those flaps break off and get stuck in the hose..........Check the drain pump for 120v to the unit after you hit cancel drain if you have 120v and no hum from the motor it's a bad drain pump..........if the motor is humming and turning and working right you have a clog in your drain line or sump pump inside.

Hello
Check out. faboulous
hoodia

Your model number isn't correct your giving a model number to a lawn and garden piece of equipment.....if it's real old then it's probably a whole sump pump which has the drain and sump in one piece and in all honestly to replace that is probably close to just buying a new unit..........you can get dishwashers on sale for 3-400 best bet is to buy a new one if it's really old........