5 Reasons Samsung Fridge Not Cooling

If your Samsung Fridge stops cooling, I don’t think we can call it a fridge anymore, can we?

(Forgive the corny joke. we just thought in a situation like this, you are probably frustrated enough as it is, so a little light heartedness could help you ease the tension and focus on solving the problem at hand).

In this article, we’ve put together the most common reasons that your Samsung refrigerator might not be cooling. But first let’s dig into some checks you should carry out to assess the cooling problem on your Samsung refrigerator prior to more complex tasks.

Samsung Refrigerator not cooling? Check these things first


In most cases, the reason that your Samsung fridge is not cooling to the desired temperature is rarely related to more complex things like the electrical components of the refrigeration system.

Many times, simply ensuring the doors are sealed correctly and that overstuffed fridge compartments are decluttered can resolve the issue. No tools needed.

Here are some additional checks to make prior to evaluating other more in-depth issues.

  • Make sure the refrigerator is plugged in properly. Also, check the socket by plugging another item to make sure it is not faulty. Reset the circuit breaker if the socket is not working.
  • Make sure no cold air is leaking out through any gaps when you close the door. Dirty and broken door seals can also let the cool air out. Clean the seals and gasket if there is any frost build-up. Allow the fridge 24 hours to return to optimal cooling temperature.
  • Replace the damaged seals with the help of a professional.
  • Relocate the appliance if it is in close vicinity of a heat source or falls under direct sunlight.
  • Fix the temperature settings that may be too high or too low for easy maintenance. The ideal temperature setting for a Samsung fridge is 37 degrees, and the same for the freezer is 0 degrees.
  • Make sure your Samsung refrigerator is at least 1 inch away from the wall to allow ventilation.
  • Make sure you haven’t blocked the air vents and, ultimately, air circulation by cramming in too much food in the refrigerator. Allow unrestricted airflow for better cooling.
  • Make sure your Samsung fridge is not in Demo Mode. If so, the words OF- OF will display, and the compressor will be closed. Switching from Demo Mode will depend on the Samsung refrigerator model. Check your manual book for Demo Mode or Cooling-Off to follow specific instructions.

Suppose the checks mentioned above do not resolve the issue of your refrigerator not cooling enough below are diagnostic checks on refrigerator components to carry out to fix the problem.

1. Dirty Condenser Coils

evaporator coils

The most common reason your Samsung fridge is not cooling could be right under your nose… actually, right under your fridge.

Condenser coils play a vital role in the cooling system of a Samsung refrigerator. When the refrigerant passes through the coils, they dissipate heat and, thus, cool the fridge.

If these coils are dirty, then the fridge will most likely not cool up to standard, leaving you at the risk of spoiling your food.

Access the condenser coils from the back. First, you have to pull the fridge to get down and access the back panel. The coils will be under the refrigerator. All the while, make sure the Samsung fridge is unplugged.

Over time, the condenser coils can get extremely dirty, thereby hindering the cooling ability of your Samsung refrigerator.

If the coils are dirty, go in with a brush and thoroughly clean the coils. Once done, allow the fridge time to restart and set the cooling temperature.

In most cases, this simple exercise is enough to fix the problem.

2. Frosted Evaporator Coils

If you’ve had your Samsung refrigerator for several years, you may notice that frost has developed on the evaporator coils. The evaporator coils are designed to hold refrigerant and are therefore always cold. The temperature difference between the chilled coils and ambient air causes the frost to occur. Opening and closing the refrigerator frequently can increase the chance that your evaporator coils develop frost.

But what happens when the evaporator coils get frosted? When your evaporator coils are frosted, it disturbs the cold airflow in the fridge as the evaporator fan is unable to draw sufficient air over the coils. The air doesn’t get adequately cooled and fails to maintain the cool temperature when circulating back into the refrigerator.

You can replace the defrost temperature sensor to stop frost from forming on the evaporator.

You can then locate the defrost temperature sensor on the right side of the fridge, with a white connector attached to it.

A defective defrost heater could also be the reason for your Samsung refrigerator not cooling to the set temperature. A defrost heater gets rid of any frost on the evaporator coils. Use a multimeter and make a continuity test. Replace if necessary.

3. Frosted Over Evaporator Fan

As discussed earlier, the evaporator fan takes cooled air from the coils and then circulates it into the refrigerator and freezer compartments.

If the evaporator fan is not running properly, it will cause your freezer to defrost. A simple trick to see if your evaporator fan motor is working is to open the freezer door. In most cases, the evaporator fan motor does not work if the freezer doors are not closed. The motor should start working once the door is closed.

If there is ice obstructing the fan blades, switch off the fridge for a few hours allowing it to defrost, and then turn it back on again.

4. Defective Temperature Sensor

The temperature sensor plays a vital role in the refrigeration system of your fridge. A faulty thermistor can be one reason for your Samsung fridge not cooling up to the set temperature.

To understand how a defective temperature sensor is responsible for your appliance not cooling properly, you need to know its primary function.

A thermistor is a sensor that sends the overall temperature reading inside the refrigerator to the main control board. In case of an increase or decrease in the temperature, the thermistor sends signals to the control board. The control board manages the compressor and the fan’s power, and hence the required cold air is maintained.

When the temperature sensor is faulty, it can send false readings to the main control board or not send any readings at all. As a result, the compressor may not work as needed, and this could result in your Samsung fridge not cooling.

Check if the thermistor resistance is changing when you test it using a multimeter. If not, you should replace it.

5. Compressor Not Running


Another reason for your Samsung refrigerator not cooling properly can be a malfunctioning compressor. However, before you set out to replace the compressor (as it can be pretty expensive), you can -and should- check the parts responsible for running the compressor smoothly.

Check the start relay and the start capacitor.

The first thing to check is the start relay since a defective one would not allow the compressor to run correctly, if at all.

Use a multimeter to test between the start and run terminal socket. Replace it if you don’t see continuity.

You can also shake it to see if nothing rattles, and there is no burning smell. If yes, then you should install a new starter relay.

In most fridges, the start relay works with a start capacitor to provide enough power to run the compressor. Use a multimeter to test it for continuity again. If you do not see a reading, the capacitor has become inoperative.

Check the condenser coils.

Dirty condenser coils also affect the performance of a compressor. However, this should be one of the first checks you make when your Samsung refrigerator is not cooling enough. Make sure the condenser coils are clean, as discussed above.

With all your checks done, if the fridge is still giving you trouble, the problem could likely be a defective compressor. Live voltage is used for this check. However, we recommend you call the Samsung service center to inspect it for you.

If the technician determines the compressor needs changing, it would probably be better to get a new Samsung fridge, especially if you own an old model.

Overall, if your fridge is not cooling to your liking, there can be many faulty parts that you can quickly check to fix and replace. However, please be aware of when you need to talk to a professional or call the service center for a thorough check-up once all your checks are done and you still cannot find the source of the problem.

Frequently Asked Questions

Is there a reset button on a Samsung refrigerator?

The simplest way to reset your Samsung fridge is to unplug it or turn off the circuit breaker. Please wait for 1 to 5 minutes for the electric charge to dissipate and then plug it in again.

If you do not want to go for the Hard Reset, for most Samsung models, you should hold the “POWER FREEZE” and “POWER COOL” buttons simultaneously for 5 seconds or until you hear a chime.

Some fridges also have reset switches located on top of the fridge door. Look for a small panel that can flip up. Under the panel, you will find a button or a flip switch labeled “reset.” Flip the switch to rest the fridge.

How do I reset my Samsung refrigerator ice maker?

To reset your Samsung refrigerator ice maker:

1. Locate the TEST button after removing the ice bucket. Depending on the model, the rectangular button will be in the ice maker’s front, side, or bottom. The button is usually labeled TEST or has an arrow pointing towards it.

2. Press and hold the button for up to 10 seconds until you hear a chime.

3. Put the ice bucket back in and wait for the ice maker to sump the ice in the bucket

This test usually takes about 6 minutes.

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