No water coming in

I am guessing that the cereal has expanded and is blocking the drain below the dish washer hose outlet
use drain cleaner or call a plumber
if the dishwasher hose is above the sink "S" bend remove the bend and clean it out
call a plumber

If the pump is running but noisy then that indicates a loose pump impeller (new pump I am afraid) if running (no noise) but failing to remove water, then I would be checking that drain hose is clear, or even that your machine is not syphoning water from waste disposal, a quick check would be to disconnect waste hose from waste disposal and see if it will then drain into a bucket, hope this is helpful.

sounds like blocked pipe. if you cannot unblock yourself you will need to call a plumber

We had this problem and found out that the pipe leading away from the house was clogged. Have a plumber look (with a camera) down your clean out, and see if that is the problem. They can snake it from the clean out and clear out tree roots or whatever is the problem.

Is there a chance the plumber turned off the inlet water connection under the kitchen sink when clearing the drain?

Sounds like your sink drain trap or line is clogged. When the dishwasher drains, the sink drain can't keep up, the water backs up, then backs down the dishwasher drain line into the dishwasher. You may not notice the slow line when you run a little water into the sink, but with the amount of water coming from the dishwasher the problem is worse. You can try taking off the trap under the sink and making sure it's clear. If the problem is farther down the drain line, you can try snaking it yourself, or call a plumber. I don't recommend using Liquid Plumr or Drano because if those don't work, they leave the line full of caustic chemicals for the next person who works on it. That can be dangeerous.

Suggest the problem may be a plumbing issue - likely substantially blocked drain system, so the dirty wash water cannot properly pump out but rather remains in the dishwasher.

Suggest getting a plumber in to "snake" out your kitchen drain system. You will probably notice your sink drains will suddenly work much better too...

hi just try this Is the door open or unlatched?
Make sure the door is completely closed and latched.
Was the selected cycle interrupted before completing?
The Clean light will come on when the cycle is complete. Wait until the Clean light comes on before trying to manually drain dishwasher. Press Cancel/Drain to try and drain the standing water.
Is the water level just covering the pump module?
This is normal. A small amount of water will be seen in the bottom of the sump area at the base of the pump. This is to ensure that the pump seal does not dry out.
Is the dishwasher drain hose connected to a garbage disposal?
For many dishwashers, the drain hose is connected to the disposal and the knockout plug must be removed from the disposer inlet.
Is the drain system blocked?
Run the disposer to clear the drain system.
Do you have an air gap at your sink?
Check to see if the air gap is blocked by foreign material. To clean the drain air gap, follow the cleaning instructions provided by the manufacturer. With most types, you lift off the chrome cover, unscrew the plastic cap, and then check for any soil buildup. Clean if necessary.
Is there a loop in the drain hose less than 20" (50.8 cm) above the floor?
Make sure the drain hose is looped up so that it touches the underside of the counter before connecting to the sink drain or disposer.
Is there a kink in the drain hose?
Replace a kinked drain hose.
Did you reuse an existing drain hose?
Make sure to use the new drain hose that came with the dishwasher.
Is the sink drain clogged?
If the sink is not draining well, a plumber may need to be contacted. Most dishwashers connect to the sink drain. If the sink drain is clogged, the dishwasher can't pump out water.
Is the drain hose too long?
If the supplied drain hose was replaced with a longer one it must be shorter than 12' (3.7m).

Your drain is clogged! Start with a good drain cleaner (I like "Works", but Liquid Plumber is fine). if it doesn't clear with te drain cleaner (for goodness sakes, please follow the directions on the bottle to the letter) then call the plumber.

you will almost certainly have a build up of water in the base. remove the water and retry. check to see if limit switch is not sticking or has possibly gone faulty.failing this, your board is faulty.