Water spraying up at the back top of the dishwasher

see the problems:
Water-inlet valve
test for open or defective and replace
Float switch
test for open or defective see the diagram

Ensure that the spray arm is movable. Inspect the spray holes in the top spray arm. If clogged, clean the openings. If no clog, position the spray arm in a certain position (e.g.: arms facing front and back). Then activate the dishwasher for a minute or so and open the door to determine if the spray arm has moved. If not, there may be an issue with the water feeding to the spray arm (typically via the water pump, etc.).

Some leaking around-under-from the door on dishwashers can be traced back to a split in the spray arm. If the lower spray arm develops a split in it, the spray arm can turn too fast, and shoot water directly at things that it is not suppose to spray water at....sprays water at the door vents or edges and can create water leaks. See if thats the problem

Check your spray arm that nothing got stuck in its holes. make sure the spray arm is turning all the time when using the machine :
put the spray arm in 90 degree position, turn the unit on , open the door after few min check that the spray arm move...
make sure your seal of the door is clean and nothing prevent it to close evenly the door...
good luck 911servicetoday . com

Make sure you get water to the dishwasher. Check to see if the water shut-off valve (located under the sink) is open. If you get water to the dishwasher, but there is still no water inside during the fill cycle, the problem might be with a faulty water valve (located at the bottom of the dishwasher, behind the kick panel, on either side), in which case replace the water valve.

If there is not enough water, the dishes would not get cleaned. This could be caused by a partially closed water shut-off valve (located under the sink), or a faulty dishwasher water valve (located at the bottom of the dishwasher, behind the kick panel, on either side).

There is usually two, sometimes three spray arms in a dishwasher. Make sure there is no debris blocking the holes inside each spray arm.

Have you looked at the spray arm fixing nut at the back top arm as this has just gone on my machine

open machine when running and check both spray arms rotating - you will get a bit of water out. if spray arms not rotating, usual cause is debris in the arms. the spray arms only rotate by water jetting from angled jets at the end of the arms. take them out and make sure all debris removed

The end of the spray arm should plug straight into the hole at the back of you machine when you push the top basket in.

On this model the vent is open and shut by a wax motor. The vent should be closed tight during the entire wash cycle and the first 6 minutes of the drying cycle. Check the operation, make sure there is not a bunch of gunk restricting it. If you are handy with a meter check the resistance of the motor. It should read approx. 2100ohms. Another reason for leaking at the base is oversudzing. Also check the upper spray arm for cracks or splits shooting water into the vent area. Catriver...post back.

Br, couple of things you can look for here. Check the vent, you can just pop this out. Sometimes there is a buildup of gunk which will hold water during wash and leak down between the door. There is a seal there, part number 974782. Another thing is to check the upper spray arm for cracks or splitting. This can send a direct flow of water into the vent. There is also a seal at the bottom of the upper spray arm, part number 3376846. I was fooled by a leak like this once, it turned out to be a clogged vent...Catriver..post back.