Help library: Help library: LG air conditioner heating - The outdoor unit does not operate. After indicating defrosting operation in progress, cooling is suddenly stopped

LG air conditioner heating - The outdoor unit does not operate. After indicating defrosting operation in progress, cooling is suddenly stopped

Troubleshooting Split Air Conditioners 09/15/2025

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<div class="content-service-view">
<p class="info-desc">
Defrosting is a function to thaw frost in the outdoor unit that occurs during heating.<br/>
At the moment, defrosting is switched to cooling for a while to melt the ice stuck in the outdoor unit, and
the fan stops to prevent cold air from entering indoors.<br/>
It is normal, so you can use it with an easy mind.<br/>
If the indoor temperature is higher than the target temperature, the outdoor unit will stop running.
</p>

<h2 class="tit">Try this</h2>
<p>
You can see the phrase [defrosting] on the display window of the air conditioner during the defrosting
operation.<br/>
In addition, during defrosting operation, frosts on the outdoor unit will melt and water will flow to the
floor, and as a result, white steam can be seen. Because frosts are melted instantaneously, you can hear the
ice breaking sounds temporarily.<br/>
If the neighboring temperature drops suddenly, it takes longer to warm the pipe, and as a result, the indoor
temperature will not be changed quickly and on a snowy or wet day, there would be more frosts on the outdoor
unit, thus defrosting operation will take place more frequently and the overall cooling performance will be
degraded.
</p><p class="txt-idt">※ The defrosting and preheating display may differ by model.</p>        <p>
Press the indoor temperature button on the remote controller to check the temperature.<br/>
But, if the outdoor unit does not operate when the target temperature is higher than the indoor temperature,
then inspection is required.
</p>

<div class="img-only">
<img alt="Set temperature and preheat/defrost display screen and star water drop icon display" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=g0EYwJbkd64OtIx1b77f8A&amp;portalId=P1"/>
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<p class="help-txt">This guide was created for all models, so the images or content may be different from your
product.</p>    </div>

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LG air conditioner heating - The outdoor unit does not operate. After indicating defrosting operation in progress, cooling is suddenly stopped

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