20 Most Recent Maytag MDB8751BWQ 24 in. Built-in Dishwasher Questions & Answers

Hi,
Here is a tip that I wrote that will help you with your problem...

Dishwasher Problems - Water will not drain out
http://www.fixya.com/support/r4078724-dishwasher_problems_water_will_not_drain

heatman101

A clog in the drain line or air gap (if there is one) is the usual reason that a dishwasher won't drain. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. If you remove this line, you can clear any debris from the hose or hose connection. Be sure to reattach the hose before starting the dishwasher again.

Many dishwashers use a drain valve with an electric solenoid. When electricity flows to the solenoid, the valve opens and diverts the water to the drain. Sometimes the solenoid, or the diverting lever, sticks and prevents the dishwasher from draining or filling properly. Try to free up the solenoid to lubricate the lever. Otherwise, you may have to replace the solenoid or pump assembly. With these systems, the motor always rotates in one direction. When it's energized, the drain valve diverts the water.

Other dishwashers simply reverse the direction of the motor to drain the dishwasher. These units don't have a drain valve. Instead, there's a drain hose connected directly to the pump housing.

It's likely to be a defective cycle controller.

Could be aluminum

I would think something is blocking the intake or the pump rotor?

Check whether the pump runs when you start a new cycle as this is the default behaviour for most machines to ensure that they are empty before starting the wash. If the pump runs then it likely that the filter in the bottom of the machine requires cleaning.

The door gasket may have to be replaced, especially if it has become hardened or cracked.

Fault symptoms point to a burnt out element, which will need to be replaced.

It is maybe a belt slipping or it needs new bearings
All best Clive

https://www.youtube.com/watch?v=azgJ6f9XwhU

March of 2015

Daft question but have you checked the tap for the water inlet is on?
if that doesn't fix it, check for blockages in the water inlet pipe (the blue flexible one) and check the waste pipe and filter.

Manufactured March of 2010

Under the unit. It’s a 1/2 inch round disk with 2 wires going to it.