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Samsung Oven Not Heating? FIXED

Your Samsung oven won’t heat up because of a faulty igniter, a broken spark electrode, an insufficient power supply, a faulty safety valve, or a faulty fuse. To resolve this issue, check that the power supply is up to the required 120V/240V for gas and electric ovens, respectively. If the problem persists, call a professional for help or carefully follow the steps provided in this guide.

A Samsung Oven not heating is a rare problem you can expect, but these issues are inevitable over time. For example, I was recently embarrassed by my Samsung oven when I had colleagues over for dinner. The device just refused to heat up. It turns out the fuse was faulty, and all I had to do was replace it (the following day).

This is your ultimate troubleshooting guide for a Samsung oven that doesn’t heat. Some of the issues are simple to fix, but others need more work and effort, and sometimes even the expertise of a professional. So let’s tackle them from simple to complex.

Why is my Samsung oven not heating up?

Why Is My Samsung Oven Not Heating Up?

Here are the most common reasons why your Samsung oven won’t heat up:

  •  The oven door is open.
  •  Insufficient power supply
  • The oven ‘demo’ mode is activated
  •  The broil spark electrode isn’t working
  • The oven gas pressure is too high.
  • A faulty igniter.
  •  The safety valve isn’t working
  • The bake element is damaged.
  • Faulty thermal fuse

Insufficient Power Supply

If your Samsung Oven doesn’t heat up, the power supply is the first place to check. An insufficient power supply is the most common reason an oven would not heat up. There’s a minimum supply needed to heat up the oven.

Standard Samsung ovens require 240V (electric ovens) and 140V (gas ovens). So whether you’re using an electric or gas oven, check the power supply to see that it meets the required voltage for your case. 

How To Fix a Samsung Oven Insufficient Power Supply

Ensure your oven power cable is plugged into a 240V wall outlet. You can test the outlet for voltage by following these steps:

  • Set a multimeter to the AC function (voltage range).
  •  Insert the black probe of the multimeter into the ‘Neutral’ slot first and the red probe into the ‘Hot’ slot next. (Wall outlets have ‘Hot’ (Left), ‘Neutral’ (Right), and ‘Ground’ (Lower/Upper) slots.)
  • Check the reading on the multimeter. It should indicate a value of around 240V. Instead, the value is more toward the 110/120 volts; the outlet has a lower voltage than your oven requires, so that the appliance won’t heat up.
  • Call in an electrician to install the correct wall outlet for your oven.

If you need visual help with the steps, watch this video by AMRE Supply’s Repair and Replace

Caution! A wall outlet is tested for voltage with power flowing into the outlet. If you are not sure you can do the test safely, call a trained electrician to perform the test and fix any power outlet issues. 

The Oven “Demo” Mode Is Activated

This problem is common with NEW ovens.

Appliance retailers use the Samsung oven “Demo” mode for display purposes. When the oven is in this mode, the oven elements do not heat, but the gas cooktop will ignite. Depending on the model, the control panel will display tESt (tE5t), DEMO, or a ‘d’.

If your Samsung oven is new and you’re using it for the first time, the appliance may have accidentally been left in Demo mode. You’ll need to deactivate this function to get your oven to start heating.

 My Samsung oven not heating up?

How To Deactivate Samsung Oven “Demo” Mode

The steps for deactivating the Samsung oven “Demo” mode vary from model to model. Therefore, you may want to try both approaches to find what works for your device.

Approach 1:

  • Press the Timer icon on the control panel and hold it for 3 seconds.
  • Tap the ‘Up’ or ‘Down’ arrow to set the value to zero.
  • Hit the Start/Set button.
  • Use the ‘Up’ and ‘Down’ arrows again to select OFF or ON.
  • Tap the Start/Set button to save the changes.

Approach 2:

  • Tap the Options button.
  • Press the number ‘9’ pad.
  • Press number ‘1’ to activate the OFF option.
  • Hit the Start/Set button to save the changes.

You can check your model’s User Manual for the precise steps to take. If your User Manual does not have the instructions, contact Samsung through their Support Page. Ensure you have your model number.

A Faulty or Weak Oven Igniter

The oven igniter is a tiny device that lights up the gas to heat up your oven. It’s some sort of gas lighter. A faulty igniter completely prevents your oven from heating up. Although this isn’t common with Samsung ovens, checking and replacing your igniter when your oven stops to heat is worth checking. A faulty igniter could be caused by a build of grease or grime inside your oven.

Note that only gas ovens have igniters. So if you have an electric oven, you can ignore this step.

The weak igniter thing is a Samsung oven issue. Usually, the igniter on a standard gas oven takes 3 minutes or more to ignite the burners. If the igniter is weak or not strong enough to get the flame to the burners, the safety gas valve will not open to allow the burners to light. Also, the igniter may stay on with a low flame or go off entirely after some time.

So, while you’ll assume you’ve lit your oven, the oven doesn’t heat because the igniter has not lit the burners. Therefore, a weak gas oven igniter needs to be replaced.

How To Replace a Weak Oven Igniter

First, observe the oven igniter and check if the flame is too low or the burners do not turn on after three minutes. If that’s the case, follow these steps to replace the igniter:

  • Turn off gas and electricity to the range.
  • Release the bottom panel inside the oven by removing the screws, then take it out of the oven.
  • Unscrew the igniter from the mounting bracket on the burner.
  • Press the tabs on the connector to remove the igniter plug from the harness.
  • Fix the new igniter into the harness. Be careful not to touch the carbide electrode, which could cause it to fail before use.
  • Screw back the igniter on the burner bracket.
  • Place back the bottom panel and replace the screws.
  • Turn on gas and electricity and test to see if the igniter lights the burners and the oven starts to heat.

If you prefer working with a visual aid, this video by Sears can demonstrate the above steps:

The Broil Spark Electrode Isn’t Working

If you’re using a Samsung gas oven, you may also want to check your broil spark electrode for an oven that doesn’t heat. The broil spark electrode is a component that ignites the gas in the broiler burner by generating a spark. The ignited gas then heats up the oven. Your oven won’t heat up if it has a faulty spark electrode.

How To Fix Spark Electrode Not Working

Consider replacing your spark electrode to have your oven back to normal. Here’s how:

  • Turn off the power to the oven. Easy: Unplug the device. 
  • Find the broil spark electrode: You’ll locate the spark electrode near the broil burner. Consult your oven’s user manual if you’re unsure.
  • Test the electrode by turning on the broiler function and observing. If there’s a spark, then the electrode is working correctly. If it doesn’t, you may need to replace the electrode.
  • Remove the broil spark electrode from the oven. Be careful not to damage any wires or connections.
  • Clean grease and grim buildup on the electrode. Use a soft, dry cloth.
  • Check the electrode’s wire connections: Loose connections can prevent the electrode from working correctly.
  • Replace the electrode: If it still doesn’t spark after the above steps, you may have to replace it. Visit your installation manual, or call a Samsung professional.

The Oven Door Is Open

For safety, Samsung ovens are programmed to stop heating if the doors are left open for over a minute. So the oven will not heat unless your oven’s door is completely closed, the oven will not heat.

So quickly check the door to see if it’s completely closed. If the door gasket is worn-out or broken such that it stops the door from closing correctly, call a professional to have the door repaired.

Why is my Samsung oven not heating up?

Oven Gas Pressure is Too High

Again, this problem only exists with gas ovens. Skip to step 6 if you have an electric oven.

If you’ve set a gas range and the oven will not heat when the cooktop is off, then the gas pressure is too high. 

It is advisable not to try troubleshooting oven gas issues. Instead, Samsung recommends contacting a professional installer or gas company if you use your range oven for the first time. Alternatively, you can visit Samsung Support and seek help from an agent. 

The Bake Element is Damaged

The bake element is a major heating component of electric ovens, so feel free to skip this tip if you’re using a gas oven. 

Electricity flows through the Bake element to produce heat for the oven. So a damaged Bake element will prevent your oven from heating. The best fix here is to find and replace the Bake element. Locate the Bake element at the bottom of your oven.

How To Deactivate Samsung Oven

How To Replace a Damaged Samsung Oven Bake Element

The procedure for replacing a Samsung oven Bake element can vary depending on whether you’re working with a wall oven or a free-standing range. Follow the steps below to replace a faulty Samsung oven Bake element for free-standing ranges. 

  • Turn off the power to the oven and unplug it. 
  • Pull the range away from the wall to make space for working.
  • Remove the screws holding the back panel and set it aside.
  • Locate the spade terminals of the element and unplug them.
  • Use a multimeter to test the element for resistance by placing each probe of the multimeter on one of the element terminal plugs. The multimeter will show a reading between 10 to 50 Ohms if the element is sound. Otherwise, it is defective and needs to be replaced.
  • Proceed to remove the bake element by first taking out the power cord from the block assembly. You need to first take off the screws before sliding out the cord.
  • Remove the screws going into the terminal block and remove it.
  • Remove the plate to which the terminal block was attached.
  • Put the rest of the oven wiring to the side to access the insulation running across the assembly. Using a penknife, cut through the insulation. You will see the screws holding the bake element in place.
  • Remove the two screws and carefully pull the element out. You may need to push down the insulation to pull out the element easily.
  • Push in the new element where you’ve removed the old one and fix back the holding screws.
  • Follow the reverse steps to put back all the parts. 
  • Power the range and test to see if the bake element resumes heating.

Note: If you’re new to this, we recommend calling a trained Samsung oven technician for the replacement. 

This video by can help make things a little easier: 

Faulty Thermal Fuse

A faulty thermal fuse is another common reason your Samsung oven won’t heat up. The thermal fuse is a temperature-sensitive device that prevents overheating in the oven. It is also found at the back of the oven. The thermal fuse will interrupt the power supply to the oven if the temperature exceeds a certain maximum value.

So a faulty thermal fuse could infringe on your oven’s power supply and prevent it from heating or even turning ON.

Samsung Oven Not Heating? Here’s Why (+ How To Fix)

How to replace a damaged Samsung thermal fuse.

Follow the steps below to remove and replace a damaged thermal fuse.

  1. Turn off the power supply to the oven.
  2. Remove the back panel with the help of a screwdriver – to reach the thermal fuse.
  3. Remove the thermal fuse by carefully disconnecting the two wires attached to it.
  4. Set up a new thermal fuse in the same location. Use a screwdriver to put the fuse in place.

Note: We recommend consulting a professional to find and replace your oven’s fuse.

A Faulty Safety Valve

The safety valve is a component only for gas ovens, so again, ignore this fix if you’re using an electric oven. 

The valve is a safety oven element that regulates gas flow to the oven’s burners. It ensures that gas doesn’t continue to flow if the flame goes out. Now, when your valve malfunctions, it can stop gas from flowing as it normally should, preventing your oven from heating.

How to replace a faulty safety valve in a Samsung oven

  1. Turn off the gas supply.
  2. Open the oven door and locate the hinges that attach it to the oven. Lift the locking tabs on the hinges and pull the door off.
  3. Remove the lower panel to find the safety valve. Use a screwdriver to remove the screws holding the oven’s lower panel. 
  4. Disconnect the safety valve (It is usually connected to the gas line): Use a wrench to disconnect the gas line from the safety valve. Use a screwdriver to remove any screws holding the safety valve in place. Carefully disconnect any wires or connectors that are attached to the safety valve.
  5. Install the new safety valve following the reverse procedure.
  6. Reattach the oven’s lower panel.

It’s best to consult your oven’s user manual or contact a professional for assistance.


A Samsung oven that doesn’t heat up is a rare issue, but it can happen anytime. If your oven suddenly doesn’t heat up, apply the fixes, we’ve discussed in this article, depending on whether you’re using an electric or gas oven. 

Always start by checking the power supply, then check if the oven’s door is completely closed before anything else. When applying a fix, always turn off the power supply first. And consult your user manual or call a professional if you’re unsure about a specific fix.


  • Steve Rajeckas

    Steve Rajeckas is an HVAC hobbyist with an avid interest in learning innovative ways to keep rooms, buildings, and everything else at the optimal temperature. When he's not working on new posts for Temperature Master, he can be found reading books or exploring the outdoors.

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