Is the sound you can hear from the dishwasher alike to a hum?
If you take a pan of water and throw it into the dishwasher, then try again, what happens?
Ok, turn off the dishwasher at the on/off button.
Using a large recepticle, fill the dishwasher with water untill the water is just below the lower seal of the door.
Switch the appliance on and put it into a program
Close the door
Tell me what happens.. exactly.. What noises and for how long
When the light comes on and the beeping starts, is the drain pump still running?
Also, does the red light below include a service code?
When you say the red light on the floor flashes and beeps, how many times does it flash before taking a break to start flashing and beeping again?
If you open the dishwasher you may find that it is also flashing at the top display.
Does your version have the display on it?