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Maytag Dishwasher Won't Drain

MDB6650AWW

The 8 most common part(s) or condition(s) which cause the symptom Dishwasher won't drain are listed below starting with the most likely. Check or test each item and watch any available videos.

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Drain Impeller - Part # 1487486 Mfg Part # 6-903304

Drain Impeller

RepairClinic Item # 1487486

The drain impeller is attached to the pump and pushes the water out of the dishwasher, through the drain tube and into the garbage disposer or drain line. If the dishwasher won't drain, the drain impeller might be broken or worn out. Replace both the impeller and seal at the same time.

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Pump and Motor Assembly - Part # 1469472 Mfg Part # 6-915415

Pump and Motor Assembly

RepairClinic Item # 1469472

If the dishwasher won't drain, the pump and motor assembly might be defective. If the motor runs during the drain cycle, check for a blockage in the drain line. If the motor won't run during the drain cycle or if it just hums when it should be running, the pump and motor assembly might need to be replaced.

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Pump and Motor Assembly - Part # 1469539 Mfg Part # 6-917112

Pump and Motor Assembly

RepairClinic Item # 1469539

If the dishwasher won't drain, the pump and motor assembly might be defective. If the motor runs during the drain cycle, check for a blockage in the drain line. If the motor won't run during the drain cycle or if it just hums when it should be running, the pump and motor assembly might need to be replaced.

$206.95

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Other Causes and Conditions

Clogged or Improperly Installed Garbage Disposer

If the dishwasher won't drain and the garbage disposer was installed recently, the installer might have forgotten to knock out the drain plug from this disposer. All garbage disposers are sold with a solid plug in the drain tube for situations where a dishwasher isn't connected. However, if the dishwasher is connected, the plug will need to be removed. If the disposer wasn't replaced recently, remove the dishwasher drain hose from the disposer and clean out both the fitting on the disposer and the end of the drain hose. These are the most common places to find an obstruction if the dishwasher won't drain.

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Drain Hose - Part # 1470 Mfg Part # 99001782

Drain Hose

RepairClinic Item # 1470

If the dishwasher won't drain the drain hose might be clogged. Remove the drain hose from both the dishwasher and the sink drain to clean it out. The most common place for an obstruction is at the garbage disposer.

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Drain Hose - Part # 779817 Mfg Part # 99002175

Drain Hose

RepairClinic Item # 779817

If the dishwasher won't drain the drain hose might be clogged. Remove the drain hose from both the dishwasher and the sink drain to clean it out. The most common place for an obstruction is at the garbage disposer.

$36.55

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Check Valve - Part # 752098 Mfg Part # 99001799

Check Valve

RepairClinic Item # 752098

If the dishwasher won't drain the check valve might be stuck closed. The check valve is a device which prevents water from returning to the dishwasher after it has drained. If the valve gets stuck closed, it will prevent the water from draining. The check valve is located in or at the outlet of the pump that the drain hose attaches to. Sometimes the check valve is accessed from the inside of the unit depending on the model.

 

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Check Ball - Part # 786065 Mfg Part # 99002281

Check Ball

RepairClinic Item # 786065

If the dishwasher won't drain the check ball might be stuck. The check ball is a small plastic ball in the check valve which prevents water from returning to the dishwasher after it has drained. If the ball gets stuck, it will prevent the water from draining also. The check valve is the device that the drain hose is attached to on the dishwasher.

$4.50

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