I have a whirlpool gold and there is water in the bottom after the cycle. i cleaned everything out and didn't see any blockage.

Run the cleaning cycle on the machine and clean the filter at the bottom front of the machine. You can put bleach in the dispenser during the cycle to sanitize the drum of the machine. Have a small bucket when you take the filter out as it will still have some water in it.

Check the drain tube on the rear bottom of the freezer for blockage.

Check for blockages in the base of the dishwasher under filter etc.
Also make sure the kitchen drain is clear and if you have garbage disposer run it prior to running the dishwasher.

Also need to confirm if the dishwasher pump is actually operating during the drain cycle. If the pump is faulty then it will not drain. Provide full model number of dishwasher if you need further assessment of the problem. Good luck.

Have installer come back to you, sounds like a pump problem, blockage, timer, ...is outlet hose kinked at all? It usually goes into the kitchen sink drain below.

if it is just affecting the upper rack i doubt it is just a plugged spray arm (though i could be wrong). more likely than not you have a blockage on the intake of your spray pump motor. a series of bones, toothpicks, foreign material, etc could be blocking the entrance of the pump causing it to starve for water so to speak.
you will more than likely need to remove the lower rack and spray arm to be able to disassemble the strainer and gain access to the sump.
a complete model number would help bunches to.. alas

Heating element may fail. This will lead to the machine stopping part way through its cycle

Pumps. There are 2 pumps in most dishwashers. The drain pump,( which describes itself -it pumps the water out of the machine.)
The recirculating pump which forces the water at high pressure through the spray nozzles and arms. (This is how the cleaning action is performed)
These pump may either leak, or burn out. Either way, the only solution is replacement.

there is a PROBLEM with the pump.it is most likely clogged,in which case,it must be removed and cleaned.the pump might also be faulty,and so must be replaced.

Insure the drain hose is not kinked which sometime happens when you install a new diskwasher back into the hole. Also check to make sure there is no packing material in the bottom like Styrofoam or plastic.

Check the drain for clogging and also the water pump.

Test by restarting the cycle and see if water drains if it does not then there is either a blockege in the pipe ,pump,or in the machine where the water passes out normally through a filter if you have checked and cleaned out filter and drain pipe and there is still no draining then listen to the pump if you can hear a humming niose then there is something in the pump itself and you need to take it out and inspect the impelar houseing remove what ever is there put back and enjoy if there is no noise and pump is clean then it is proberly fualty and nedd replaceing.