Samsung Dishwasher Not Draining? Troubleshooting Tips

Samsung Dishwasher Not Draining? Troubleshooting Tips

It can be incredibly frustrating when your Samsung dishwasher suddenly stops draining properly. Dirty water sitting in the bottom of the tub, backflowing down the sink drain, and water spots left on dishes are all signs your dishwasher isn't emptying as it should.

Fortunately, most drainage issues are relatively straightforward to diagnose and repair yourself. In this article, we’ll walk through the top reasons a Samsung dishwasher won't drain, along with fixes you can try at home.

Clogged or Kinked Drain Hose

One of the most common reasons a Samsung dishwasher won't drain properly is a blockage in the drain hose. This flexible hose runs from the bottom of the dishwasher to the sink drain or garbage disposal. Over time, debris can accumulate inside the hose, preventing water from emptying out of the dishwasher.

To check for a clogged drain hose:

  1. Locate the drain hose, which is usually near the back of the dishwasher. It connects to the sink drain pipe under the sink.
  2. Remove the hose from both the dishwasher and drain pipe.
  3. Inspect inside the hose for any debris or buildup.
  4. Run water through the hose to flush out any clogs.
  5. Reattach the hose securely.

In addition to debris blockages, a kinked drain hose can also prevent proper drainage. Check that the hose isn’t crimped or bent anywhere between the dishwasher and drain. Straighten out any kinks.

If flushing the hose doesn’t resolve the issue, the entire drain hose may need replacement. Contact Samsung support for assistance replacing drain hoses.

Clogged or Faulty Drain Pump

All Samsung dishwashers have a small drain pump that pushes water out through the drain hose. Over time, this pump can become clogged with debris like broken glass, food particles, grease, and more. A faulty drain pump that’s no longer pumping correctly can also prevent drainage.

To inspect the drain pump:

  1. Locate the pump in the bottom front section of the dishwasher tub. It has a small cover you’ll need to remove.
  2. Check for any obstructions in or around the pump. Try to remove any debris.
  3. Confirm the pump impeller spins freely. If not, the pump may need replacement.
  4. Check for leaks coming from the pump housing, which indicate a failing pump.

Drain pumps on Samsung dishwashers are relatively easy to replace yourself. Make sure to get the specific pump made for your dishwasher model and install it according to Samsung’s directions.

Clogged Dishwasher Filter

All Samsung dishwashers have a filter to catch food particles and prevent them from clogging interior components like the drain pump. Over time, this filter can become saturated with debris and prevent proper drainage.

To clean the filter:

  1. Locate the filter in the bottom of the dishwasher tub. It’s usually near the lower spray arm.
  2. Twist the filter counter-clockwise to unlock and remove it.
  3. Rinse all debris from the filter under running water.
  4. Replace the filter, twisting clockwise to lock it in place.

Be sure to clean the dishwasher filter every few months to prevent drainage issues. Check it immediately if your dishwasher isn’t draining.

Faulty or Stuck Float Switch

The float switch is a small device that prevents overflowing. When the dishwasher tub fills with water, the float rises with the water level. Once the tub is adequately filled, the elevated float triggers the switch to shut off water flow.

If debris clogs the float switch so it doesn’t move up and down freely, this can prevent the dishwasher from draining. A failed float switch that doesn’t raise properly can also cause drainage issues.

To inspect the float switch:

  1. Locate the switch on the bottom of the dishwasher tub. It may be beneath a cover.
  2. Remove any debris blocking the float from moving up and down.
  3. Check that the float moves freely and makes an audible clicking sound as it's raised. If not, the switch may need replacement.

Consult your owner's manual for the switch location and replacement process for your specific model.

Clogged or Improperly Installed Air Gap

Many Samsung dishwashers utilize an air gap, a small plastic device installed near the sink drain. The air gap prevents backflow of dirty water from the drain into the clean interior of the dishwasher.

If debris clogs the air gap, it can block proper drainage. An air gap installed at the incorrect height can also impede drainage.

To inspect the air gap:

  1. Locate the air gap near the sink drain pipe. It has a small plastic cap on top.
  2. Unscrew the cap and confirm water can flow freely through the air gap without obstruction.
  3. Clean away any debris clogging the air gap.
  4. Make sure the air gap is installed at least 4 inches higher than the sink rim. Adjust the height if needed.

Check your owner’s manual to determine if your Samsung dishwasher model uses an air gap. Follow Samsung's instructions for proper installation positioning.

Drainage System Backups

In some cases, the issue may lie not with the dishwasher itself, but with clogs or backups in household drainage pipes. If your kitchen sink is also slow to drain, there may be a wider drainage problem.

Check for clogs in:

Eliminate clogs throughout the drainage system before assuming the dishwasher alone is the issue. Severe drainage backups may also require a plumber to resolve.

How to Fix a Samsung Dishwasher Not Draining

If your Samsung dishwasher is not draining at the end of the wash cycle, first try the following quick fixes:

  1. Cancel and restart the cycle - Interrupting and restarting the cycle may clear any temporary glitches.
  2. Clean the filter - Remove debris clogging the filter at the bottom of the tub.
  3. Check for kinks - Straighten any kinked hoses stopping water drainage.
  4. Inspect the air gap - Clean debris from the plastic air gap near the sink.

If restarting and simple fixes don't solve the drainage problem, you'll need to dive a little deeper:

Diagnose the Issue

First, pinpoint exactly where the clog or malfunction is occurring. Check these key Dishwasher parts:

Drain hose
Disconnect and clean debris from the drain hose. Replace if damaged.
Drain pump
Remove and clean out the drain pump and make sure the impeller spins.
Float switch
Clean and ensure the float raises/lowers properly to activate the switch.
Air gap
Clean and ensure the plastic air gap isn't blocked.

Identifying the problem area will lead you to the proper solution.

Call a Technician for Help

For complex drainage issues not resolved by DIY troubleshooting, don't hesitate to call in a professional:

Dishwashers are complex appliances with several parts working in unison during the wash and drain cycles. With attention and care, identify and resolve the specific issue preventing your Samsung dishwasher from draining properly. Using the diagnostic tips above will get your dishwasher emptying completely once more.

Why is My Samsung Dishwasher Not Draining? Lights Flashing

Seeing flashing lights on your Samsung dishwasher can be confusing and concerning. But these indicator lights are actually designed to diagnose problems with your dishwasher. By counting the blinks and identifying which lights flash, you can often pinpoint why a Samsung dishwasher is not draining and troubleshoot the cause.

Common Samsung Dishwasher Light Signals

Samsung dishwashers display two common indicator lights that alert owners to issues:

Check your owner's manual for the specifics on your model. But in general, these light codes can indicate drainage problems:

If the dishwasher won't drain and these lights blink, the drain system is likely blocked or malfunctioning.

Check Key Components

When diagnostic lights indicate drainage issues, methodically check these dishwasher parts:

Drain hose
Disconnect and inspect for kinks or debris blockages.
Drain pump
Remove any built up debris around the impeller. Replace if faulty.
Clean debris from internal filters so water can drain out.
Float switch
Ensure float raises and lowers properly to activate the switch.
Air gap
Clean away any debris blocking the plastic air gap.

Repair or replace parts as needed. Follow Samsung troubleshooting advice for your model.

Drain Manually

If lights indicate the dishwasher isn’t draining fully, try manually draining it:

  1. Turn off power to the dishwasher at the circuit breaker.
  2. Lay towels under the front panel.
  3. Locate the drain pump and drain hose.
  4. Disconnect the drain hose and allow water to drain into towels.
  5. Reattach hose once tub is empty.
  6. Replace the front panel, reconnect power, and test a cycle. Lights should no longer flash if draining works.

Use caution when draining manually. Contact Samsung support for guidance specific to your model. Proper drainage should prevent further light flashing.

Reset and Recheck

After any maintenance or draining procedure, reset the dishwasher:

  1. Press the Power button to turn off the dishwasher.
  2. Hold down Start for 3 seconds.
  3. Power the dishwasher back on.
  4. Run a test cycle.

The indicator lights should no longer blink once you’ve resolved the underlying drainage problem. Letting the dishwasher fully reset can also clear error codes.

Flashing dishwasher lights are designed to protect your appliance while alerting you to issues. By understanding the cause behind common Samsung indicator light patterns, you can diagnose and fix draining problems leading to blinking dishwasher lights.


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