Dishwasher fills with water then hums - KitchenAid KUDS50FVSS Builtin Dishwasher

Sounds like your main wash motor is bad or locked up.

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Sounds like water-level sensor is ok as it stops filling then 'hums'. I'd (carefully) check the connections to the connections between the level-sensor and the wash motor start relay. Could be motor is bad or something is causing it to become 'jammed'. Before you begin opening the appliance, I'd attempt to vacuum out the water or try putting the control in the last position to cause it to try to pump out the water.

Check the drain pump it is located in the front of you unit .Disconnect power or flip breaker .Remove the front kick plate then there is a metal plate above that is held on with 4 screws remove that and reach in and press lever on pump and turn counter clockwise it will come right out .Then check for items in the pump area could be glass. Hope it is helpfull

Hello,

Welcome to FixYa.

It sounds like you may have a faulty fill valve or a stuck motor impeller. I guess the first obvious question is, Does the unit fill with water ? If no and it hums, faulty fill valve or water supply is off.

If it does fill with water does the humming begin after it has filled, and if so has the unit recently been idle for a period of time...say a couple of weeks or so ? If yes, the wash impeller has become stuck and there is a simply resolution for Bosch dishwashers, it's a common occurrence.

These are relevant questions and can point directly to the problem if you want to reply I can help you move forward.

Let me know what you find and I'll try to assist you in any manner I can going forward.

Regards,

Macmarkus :)

Hi. this is a failed timer device. simply replacing the timer control module will eliminate these issues you are having.

motor is locked up.. if you let it hum faintly for a couple min it will cut out most likely.. thats the thermal trip built into the motor.. the motor assm needs to be replaced..

sounds like it could be furring in your water piping. may need a plumber to check it out.

Check to see if something is caught in pump or in bottom of dishwasher stopping the arm.

Sounds like a motor problem. Behind the chopper is an access to the impeller, try turning the impeller or the chopper blade and see if the motor will rotate. If it doesn't, then something is stuck preventing the motor from running.

Favorite for bosch is the water inlet modual which monitors the water flow in could be faulty, If incorrect pulses take place the motor wont proceed. Otherwise listen for a hum after water stops filling. If there is a hum, the main wash pump is jambed and has to be sorted out.