Hobart AM14 display shows fill. I have changed the float switch but still the same problem. It works on manual but not automatic.

SOURCE: am14 initial fill

lift **** basket out and lift out samle stailees plate drain and look for stailess probe coming out of side of tank half way down there should be a white pprobably yellowed plastic ball it is a float they get old and fill fith water and don't flote telling maching I have no water keep the water coming. the float is sometimes even missing fell off andf thrown out. 10 bucks and a clip your off and running. call hobart its 110.00 and your off and running.

SOURCE: Kitchenaid Dishwasher KUDIO1DL Dead?

could have a bad start button

SOURCE: Maytag MDB6650AWW will not fill

My Maytag MDB6650AWW dishwasher would not fill. The lights on the panel were on when I tried the wash cycle. I tested the water valve but no voltage was found during the cycle. I thought it may be the timer/control circuit. I traced the power from the door switch and found no power going to the float switch leg. I found two wires completely cut through (one going to the Water Valve) and three others partially sliced.

SOURCE: hobart am14 water runs through it all the time

I asume you are referring to water running from the rinse arms all the time.
You will need to check the fill/rinse solenoid. It may have debris holding it open, or is worn out. For the correct parts, have your machine ML number and look on www.hobartservice.com in the parts section. Use the ML to get your specific drawings and part numbers. Call 1-800-444-4764 to reach the nearest Hobart officeand ask for parts. There are quite a few variations of solenoids throughout the AM14 build span, but all have a repair kit if the body is not worn. Check the rubber end of the piston for wear. It comes in the kit.

SOURCE: What soap is recommended for this washer, Hobart

any auto warewashing soap will work for the am models