For a Samsung dishwasher to work effectively, clean water must flow in, and dirty water must be able to drain out without any problems. However, there are times when the appliance will fail to drain the water inside.
If your Samsung dishwasher isn’t draining, it will display error codes indicating a draining problem. The problem could be caused by clogs in the drain hose, a fine filter, drain pump, or water inlet assembly. Besides that, parts like the check valve and drain solenoid could also fail to open, thereby preventing any water from flowing out of the dishwasher.
Let’s take a closer look at why your Samsung dishwasher isn’t draining and what you can do to fix it.
Before performing any repairs on your Samsung dishwasher, always disconnect the appliance from its power supply. Doing this will eliminate the danger of electrocution and reduce any injury risk.
Working with dishwashers also involves dealing with water. So, shut off the water supply to the appliance and prepare towels to wipe up any spills.
Lastly, be sure to keep your user manual and any available technical sheet nearby. These documents are helpful references to help with locating and identifying essential components.
“No Drain” Error Codes
Some Samsung dishwasher models will display error codes to inform you of draining problems. Among the codes that you might come across include:
- OC or 0C
- DELICATE light flashing
To know which error codes apply to your Samsung dishwasher model, refer to the user manual. There, you’ll find standard error codes and what they mean.
False Error Codes
In some cases, you might also experience false error codes. That’s when the dishwasher displays any of the error codes listed above, suggesting a draining issue, even though the appliance continues to function and drain normally.
While this issue is happening, the dishwasher may also stop mid-cycle after 9 minutes for no apparent reason.
If that’s the case, then the problem might not be with the drain, but the Drain Sensor or Samsung Dishwasher ECS Sensor instead. Unfortunately, over time, these sensors experience wear and tear and might get dirty or fail.
So, you’ll need to locate and clean these sensors. If that doesn’t work, you’ll need to replace it entirely.
So, What are the Possible Reasons?
Suppose your Samsung dishwasher is not draining. Here are six reasons why that might be the case and what you can do about it.
Drain Hose Clogged
What it is: The drain hose allows all of the dirty and used water from your dishwasher to flow out into your household plumbing. Since the dishwasher is typically located in the kitchen, the drain hose is connected to the same drain as the sink, or it might share one with the garbage disposal.
How it fails: Your Samsung dishwasher will have a challenging time draining all of the water out if there’s something preventing water from flowing through the drain hose.
Firstly, the hose might be kinked and therefore restricting the flow of water. That tends to happen when the dishwasher shares a drain with the sink.
However, if the appliance shares the same drain as the garbage disposal, check to ensure that the drain isn’t clogged with food bits or other junk.
How to fix: To fix this, start by inspecting the entire length of the dishwasher’s drain hose. Make sure that no part of the hose is kinked. Then, remove the hose to check that there are no blockages, such as a buildup of food bits or other items coming from the garbage disposal.
Lastly, check to ensure that you’ve removed the knockout plug, especially if you’ve just installed new garbage disposal. The knockout plug will prevent the dishwasher from draining down the same drain.
Check Valve Worn Out
What it is: At some point along the length of the dishwasher drain hose, you’ll find a check valve. This valve ensures that water only flows one way, i.e. away from the dishwasher. In doing so, it prevents any dirty water from back flowing into the dishwasher instead.
How it fails: When a check valve becomes faulty, it will get stuck either in the open or closed position. When it gets stuck in the closed position, none of the water being drained out of your Samsung dishwasher will be able to flow out into your household plumbing.
That will result in your dishwasher failing to drain and displaying the relevant error codes.
How to fix: When faced with a faulty check valve, you can start by cleaning the valve and putting it back. That might clean away any dirt or debris that’s causing the valve to be stuck in the closed position.
However, if the check valve still causes problems even after you’ve cleaned it, then you’re better off replacing it with a new part. Check valves are inexpensive, and a new one will last you for a long time to come.
Drain Fine Filter Clogged
What it is: Inside your Samsung dishwasher, there’s a drain filter. This part is located towards the bottom of the appliance, where water pools before it’s removed through the drain hose.
The purpose of the drain filter is to catch any of the solid food bits once they’ve been washed off of your dishes. That way, none of it will be recirculated back throughout the dishwasher, and none of it will clog up the drain hose or your household plumbing.
How it fails: Over time, the drain filter will get saturated with food waste. The more waste builds up, the harder it will be for water to drain out of the appliance. If the filter is not cleaned and the buildup becomes worse, the dishwasher will fail to drain any water.
At that point, your Samsung dishwasher will begin displaying the relevant error codes, bringing your attention to the draining problem.
How to fix: Thankfully, fixing this is very straightforward. What you’ll need to do is remove the drain filter from the bottom of your dishwasher and clean it thoroughly.
Before you remove the filter, first remove as much of the waste buildup as possible. That will prevent the waste from clogging other parts of the drain system as you take out the filter.
Once the filter is cleaned, reinstall it the same way as before.
Drain Pump Failed
What it is: At the bottom of your Samsung dishwasher is a drain pump. This electrical component forces all of the used water out of the dishwasher using an impeller. In doing so, it pushes the water through the drain hose towards your household plumbing.
How it fails: Draining problems can be caused by a faulty drain pump. This component can fail in two ways: electrically and mechanically.
For instance, the pump could short out due to an electrical fault, or it could burn out from excessive wear and tear over the years. Mechanically, a foreign object could jam the impeller. A stuck impeller will not be able to drain the water inside.
How to fix: To troubleshoot and fix the drain pump, first check it for any blockages. Clean the drain pump and remove any foreign objects or buildups of food there.
A multimeter will help you troubleshoot it for an electrical fault. If there is one, you’ll need to replace the pump with a new one.
Drain Solenoid Failed
What it is: Some older Samsung dishwashers rely on a drain solenoid. That is an electrical component that opens and closes to control the draining of water out of the appliance.
How it fails: A faulty solenoid will prevent the dishwasher from draining if it gets stuck in a closed position. As a result, no water will drain out, and the appliance will display the relevant error codes.
How to fix: Fixing this will require a new drain solenoid replacement. You’ll find the solenoid on the bottom of the dishwasher, near the other draining components (i.e. near the drain pump and drain hose).
Water Inlet Assembly Clogged
What it is: When draining your Samsung dishwasher, the water will flow through the water inlet assembly on the way to the drain hose and out of the appliance.
How it fails: Assuming you’ve ruled out all the other possibilities, then it’s likely that your dishwasher draining problem is happening at the water inlet assembly.
Remember: water flows through the water inlet assembly on its way to the drain hose and out of the machine. So, naturally, blockages can occur at the water inlet assembly, consisting of food bits or other particles.
The longer this blockage is left unresolved, the more severe it will become until no water can flow through. That’s when your Samsung dishwasher will begin flashing the relevant error codes.
How to fix: To fix this, you’ll need to clear the blockage. First, remove the left-hand panel on the dishwasher that covers the water inlet assembly. Next, you’ll see several grey hoses attached to the assembly, which you’ll want to remove as well.
With the hoses removed, you’ll be able to clean out any blockages using your fingers or a small brush.
How To Check The Drain Pump Of Samsung
- Pull the lower rack out.
- Remove the cylindrical microfilter.
- Wipe any moisture or water from the filter.
- Remove the drain-pump cover by pushing its handle in the up direction and pulling it out.
- Check the impeller to make sure its in good condition and try to spin the impeller by finger. Then, remove any dirt from the pump.
- Put the drain-pump cover back into place, and then press down until you hear a clicking sound.
What To Do If Drain Error Light Shows Up, But No Drain Issue?
Do you have Samsung dishwasher DW80F600UTS or a similar model, that has a “Drain error” message, which is 5C, SC, 5E, SE or ND , sometimes during mid-cycle, but at the same time, it might running and draining absolutely fine?
Or maybe the dishwasher stops every 9 minutes?
You might have an issue with Drain Sensor or Samsung Dishwasher ECS Sensor.
This sensor over time gets dirty and all that you can do is to clean it or replace it with a new one. You can get it here