The Basic Power-On Steps

Most Samsung refrigerators turn on automatically once you plug them in—there is no separate power button to flip. When you first connect the unit to an electrical outlet, the compressor will start running within a few minutes, and the interior lights will come on. If your refrigerator is already plugged in but not running, check that the outlet itself has power by plugging in another appliance, like a lamp.

If the outlet works but the refrigerator still does not start, locate the power switch on the back of the unit, near the bottom where the power cord enters. This switch is small and straightforward to miss. Make sure it is in the ON position (usually marked with a line or the word "ON"). Flip it if needed, wait two to three minutes, and listen for the compressor to hum.

Key Takeaways

  • Samsung refrigerators power on automatically when plugged in; most models do not have a front-facing power button.
  • Check the back of the unit near the power cord for a small power switch and confirm it is set to ON.
  • After switching on or plugging in, wait two to three minutes for the compressor to start—you will hear a humming sound.
  • If the refrigerator still does not run, test the outlet with another device to rule out an electrical problem.
  • The control panel inside may show a demo mode or lock feature that prevents the unit from cooling; check your model's manual for how to disable these.

Checking the Control Panel and Settings

Once the refrigerator is powered on, look at the control panel on the inside of the door or on the front exterior, depending on your model. Some Samsung refrigerators have a demo mode that retailers use in stores—this mode prevents the compressor from running so the unit does not cool. If you see "DEMO" displayed on the screen, press and hold the button labeled "Power Cool" or "Alarm" (the exact button varies by model) for three to five seconds to exit demo mode.

Check whether the child lock or control lock feature is active. This feature disables all buttons to prevent accidental changes. If the screen shows a lock symbol or the buttons do not respond when you press them, consult your model's manual for the unlock sequence—it is usually a combination of two buttons held together for several seconds.

What to Do If the Compressor Does Not Start

If you have confirmed the power switch is ON, the outlet has electricity, and demo mode is off, but the compressor still does not run after five minutes, the unit may need time to stabilize. Samsung refrigerators have a built-in delay that prevents the compressor from starting when ready after power is restored—this protects the motor. Wait at least 30 minutes before assuming there is a problem.

During this waiting period, keep the door closed. Opening and closing the door repeatedly will trigger the compressor to work harder and may delay its initial startup. If the compressor still has not started after 30 minutes, the thermal overload protector may have tripped. This happens when the unit gets too warm. Unplug the refrigerator for 10 minutes, then plug it back in and wait another 30 minutes.

Temperature Settings After Power-On

Once the compressor is running, you can adjust the temperature using the control panel. Most Samsung models have separate controls for the refrigerator and freezer sections. The refrigerator is typically set to 37°F (3°C) and the freezer to 0°F (−18°C) at the factory. Press the up or down arrows on the panel to raise or lower the temperature in one-degree increments.

The interior temperature will not reach the set point when ready. It usually takes 2 to 4 hours for a newly powered-on refrigerator to cool to the target temperature. Do not add food until the unit has cooled completely, or the food may spoil. You can check the current temperature on the digital display if your model has one.

Common Mistakes That Prevent Startup

One frequent mistake is assuming the refrigerator is broken when it is straightforward in demo mode. Retailers set up this mode before shipping, and many owners do not realize it is on. Another common error is plugging the unit into an outlet controlled by a wall switch—if someone turns off the switch, the refrigerator loses power. Always use an outlet that is always live, not one tied to a light switch.

Do not plug the refrigerator into an extension cord or power strip. Samsung refrigerators draw significant current, and extension cords can overheat or cause voltage drops that prevent the unit from starting properly. Plug it directly into a wall outlet. Finally, avoid opening the door repeatedly in the first hour after power-on. Each time you open it, warm air enters and the compressor has to work harder to cool the space again.

When to Check the Manual or Contact Support

If the refrigerator still does not cool after following these steps, your model may have a specific startup sequence or additional settings. Locate your model number on the back of the unit or inside the refrigerator compartment, then search for the manual online using Samsung's support website. The manual will show you the exact location of buttons and explain any model-specific features.

If you cannot find the manual or the steps do not work, contact Samsung customer service with your model number ready. They can walk you through troubleshooting over the phone or arrange a service visit if the unit is defective. Most Samsung refrigerators come with a one-year warranty that covers manufacturing defects.

Frequently Asked Questions

Why is my Samsung refrigerator plugged in but not cooling?

Check the power switch on the back of the unit and confirm it is set to ON. Then look at the control panel for a demo mode or lock symbol. If demo mode is active, hold the Power Cool button for three to five seconds to turn it off. Wait 30 minutes for the compressor to start; it does not run when ready after power is restored.

Is there a power button on the front of the refrigerator?

Most Samsung refrigerators do not have a front power button. Power is controlled by the switch on the back near the power cord. Some newer models with smart screens may have a power option in the menu, but the back switch is the primary control.

How long does it take for a Samsung refrigerator to get cold after turning it on?

The compressor usually starts within two to five minutes of being powered on. The interior temperature reaches the set point in 2 to 4 hours. Do not add food until the unit has fully cooled to prevent spoilage.

Can I use an extension cord to plug in my Samsung refrigerator?

No. Extension cords can overheat or cause voltage drops that prevent the refrigerator from starting or cooling properly. Always plug the unit directly into a wall outlet that is not controlled by a light switch.

What does the demo mode symbol mean on my Samsung refrigerator?

Demo mode is a setting retailers use to display the refrigerator without it cooling. If you see "DEMO" on the screen, the compressor will not run. Press and hold the Power Cool or Alarm button (depending on your model) for three to five seconds to exit demo mode and allow the unit to cool normally.