Help Library: Help Library: New LG Microwave Burning Smell or Noise: Causes and Solutions

New LG Microwave Burning Smell or Noise: Causes and Solutions

Troubleshooting Microwave Ovens 07/08/2026

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<div class="content-service-view" itemtype="HowTo">
    <p class="info-desc description">
      When you first use your LG microwave or oven, you may notice a slight burning smell or hear some noise as the
      internal parts heat up. This is completely normal.<br/>
      This is temporary and completely safe, so there is no need to worry. The smell will naturally fade after a few
      uses, or you can use the Deodorize function to clear it faster.
    </p>    
<div class="img-only">
      <img src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=J8RRLyIugehoU6MVQFtC9g&amp;portalId=P1" alt="Running the microwave for 5 minutes with a lemon inside"/>
    </div>
    
<h2 class="tit mainName">Why is there a slight burning smell during the first use?</h2>
    
<div class="HowToStep">
      
<h3 class="name">1. Internal parts are heating up</h3>
      
<div class="text">
        <p>When you first use the product, new internal parts heat up. This can temporarily cause a slight burning smell
          or minor noise.</p>      </div>
    </div>
    
<div class="HowToStep">
      
<h3 class="name">2. Manufacturing residue is evaporating</h3>
      
<div class="text">
        <p>Small amounts of harmless residue left over from the manufacturing process may evaporate at high
          temperatures, causing an odor during your first few uses.</p>      </div>
    </div>
    
<h2 class="tit">How to clear the smell</h2>
    
<div class="HowToStep">
      
<h3 class="name">Step 1. Let the smell fade naturally </h3>
      
<div class="text">
        <p> Simply use the product normally a few times. The smell will naturally fade on its own.</p>      </div>
    </div>
    
<div class="HowToStep">
      
<h3 class="name">Step 2. Use the [Deodorize] function </h3>
      
<div class="text">
        <p>Press the [Deodorize] button on the control panel to clear the smell more quickly.</p>      </div>
    </div>
    
<div class="HowToStep">
      
<h3 class="name">Step 3. Use a lemon to clear the smell naturally </h3>
      
<div class="text">
        <p>If your model does not have the [Deodorize] function, place a lemon inside and run the microwave for about 5
          minutes. This will help neutralize the odor.</p>      </div>
    </div>
    
<h3 class="warn-tit">Note</h3>
    
<ul class="bul-list">
      
<li>The smell during the first use is temporary and completely safe. This is normal and does not mean your product
        is malfunctioning.</li>
    </ul>
    
<h2 class="tit">FAQ</h2>
    
<div class="qna-list">
      <dl>
        <dt class="name">
          
<span aria-label="Question" role="img">Q.</span> What should I do if the smell persists after a few
          uses?
        </dt>
        <dd>
          
<span aria-label="Answer" role="img">A.</span> The normal smell from heating parts will fade quickly. However,
          if a strong burning smell continues or you see smoke, stop using the product immediately, unplug it, and
          contact LG Customer Support for service.
        </dd>
      </dl>
      <dl>
        <dt class="name">
          
<span aria-label="Question" role="img">Q.</span> Can I use something other than a lemon to neutralize
          the odor?
        </dt>
        <dd>
          
<span aria-label="Answer" role="img">A.</span> If you do not have a lemon, you can place tangerine or orange
          peels with water in a microwave-safe container and run the microwave. This will also help clear the smell.
        </dd>
      </dl>
    </div>
    
<div class="help-txt">
      <p>If these steps don’t resolve the issue, visit the LG Customer Support website for further assistance.<br/>
        You can explore available support options, such as chat support or a technician visit, depending on your region.
      </p>      
<ul class="cause-list">
        
<li>Service fees may apply for technician visits if the product is out of warranty.</li>
        
<li>This guide is based on standard models. Actual settings and menus may vary by model and region.</li>
      </ul>
    </div>
  </div>

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