Samsung Washer NF Code but Full of Water – Fixed

My Samsung washer worked predictably well until it recently had an NF (no-fill) code. Fortunately, I found out the cause and was able to fix it.

Samsung washer NF code but full of water may be because of a defective water inlet valve, a faulty pressure switch, or the water level sensor may not be working. The problem may also be an overloaded washer, a defective water level switch, or only one entry point is filling the washer. 

The NF code means that the washer is not filling as it should. In my case, the washer had enough water, but I was still getting the NF code. I’ll explore the possible reasons and what you can do to fix them to get rid of the error code. 

washer showing code

1. Water Is Filling the Washer From One Entry Point

A well-functioning washer gets water from two entry points, cold and hot, even when using cold water. If water is not coming from one entry point, the washer will still be full from the water from the other entry point. 

The washer will show an NF error because one inlet is not bringing in water. This video gives possible reasons behind the NF error code on the Samsung washer.

How To Fix

Check the splitter to find out if it connects to both entry points. If one end is unattached, it is probably the reason you are getting the NF code. Attach the splitter and restart your washer. In the winter, you may want to check for frozen fill lines to ensure smooth water flow. 

2. Defective Water Inlet Valve

The NF code may also result from a defective water inlet valve. When you start the wash cycle, the water inlet valve opens up to allow water to fill the washer. If the solenoid coils in the valve fail to work correctly, the electrical path may be disrupted, resulting in the NF code. 

You may need a specialist to look at the water inlet valve. If you’re checking it yourself, disconnect the power before checking the condition of the water inlet valve. You can access the water inlet valve in the top loader after removing the control panel and lifting the washer’s top. 

How To Fix

It is normal for the solenoid coils in the inlet valve to fail, mainly if you use the washer regularly or have used it for a long time. Once the continuous electrical path is affected, it will affect the normal functions of the washer. So, you need to replace the water inlet valve. 

This video gives tips on how to diagnose and repair a defective water inlet valve.

3. Overloaded or Unevenly Loaded Washer

If the washer is unevenly loaded or overloaded, the washer may give an NF error. This is because the load may be interfering with the water flow into the washer. So, even though your washer has water, the flow may not be continuous. 

unevenly loaded washer

How To Fix

If the washer is overloaded, reduce the load and wash them in the next cycle. If the load is within the required limit, move the clothes around to distribute the weight evenly. Sometimes, the load may be unevenly distributed because the washer is tilted. 

This Samsung Leg Adjust (available on is a replacement for a faulty or broken washer leg which may cause tilting. It will help stabilize the washer and keep the load evenly distributed. You’ll also have an easier time moving the washer when cleaning. 

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4. Faulty Inlet Hoses

Even though your washer has water, it may display the no-fill error code because the water flow is not as it should be. Sometimes a bent or clogged inlet hose is the problem. Check the hose for dirt, wear, or kinks. 

Sometimes the water may have dirt that clogs the hose. A worn-out hose may also have blisters or cracks. Manufacturers recommend replacing the hose every five years. 

How To Fix

To clean the hose:

  1. Unscrew the water hose and tilt the ends to drain any water in the lines in a bucket or sink.
  2. Soak the hose in a sink or bucket filled with warm, soapy water for a few minutes to loosen the stuck debris within the hose.
  3. Lift one end of the hose and drain the water from the other end. 
  4. Repeat the process of immersing and draining until the hose is clean.
  5. Remember to clean the lint screen. Use a toothbrush or paintbrush to clean the screen.
  6. Drain the dirty water from the sink and fill it with clean water, then immerse the hose, allow it to sit for a few minutes, and drain the hose.
  7. Wipe the hose and place it back in the washer. 

5. Faulty Lid Switch

The NF error code may be due to a miscommunication between the lid switch and the water inlet valve. Electricity may not be flowing in the wire connecting the lid switch to the water inlet valve. You’ll need to test your lid switch to understand the source of the problem. 

How To Fix

Do the following to test the lid switch. 

  1. Unplug the washing machine before removing the lid.
  2. Lift the lid switch after removing the screws that hold it in place. 
  3. Find the wire connecting the switch to the water inlet valve. 
  4. Perform the continuity test.
  5. If the power supply to the water inlet valve is absent, you’ll need to replace the wire. 
  6. If the power supply is continuous, you need to check the timer. 

If the power supply and timer are working well, you will need to check other possible causes of the NF code.

6. Defective Water Pressure Switch

A defective water pressure switch may be why your washer is full of water but displays an NF code. The Samsung Washing Machine performs best when the water pressure is 20 – 116 psi

Sometimes, the water pressure is within the acceptable range, but the water pressure switch on the washing machine is defective. The washer may be filling with water, but when the pressure switch malfunctions, it will not send a signal to open or close the valve. 

pressure switch

How To Fix

Unplug your washer and check the pressure switch (located behind the control panel). Check if the switch has continuity with the multimeter. If it doesn’t, then you should replace the pressure switch. Ensure that the air tube to the pressure switch is free of debris before making any changes. 


The NF code signals a problem with the water flow into the washer. Sometimes, the problem may be easy to diagnose, such as a poorly connected splitter. Some of the issues may be more complex and require a technician to troubleshoot and fix the problem.