Help library: Help library: LG Air Conditioner Power - The product stops all of sudden, and the lamp blinks. [CH00] appears

LG Air Conditioner Power - The product stops all of sudden, and the lamp blinks. [CH00] appears

Troubleshooting Split Air Conditioners 08/08/2025

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<p class="info-desc">
If the LED lamp blinks, or [CH00] appears on the display, you should check the product.<br/>
Inspection code of the product indicates that temporary error may take place because of unstable power supply, or other electric causes.
</p>

<h3 class="sub-tit">Turn the power cord off or trip the dedicated circuit breaker of the product, and then reset the breaker approximately 5 minutes later.</h3>
<p>If identical symptom or inspection code persists, have the service technician precisely check the product.</p><p class="info-desc idt">➔ How to check error code</p>        <p>
The first LED indicates error at the first digit.<br/>
The second LED indicates error at the 10th digit.<br/>
(Example: The first LED blinking five times at regular interval stands for error CH05.)
</p>

<div class="img-only">
<img alt="Image showing CH05 error on wall mounted air conditioning panel front right display" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=N9AnEBCcZA62QFPRFM9WCA&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 Power - The product stops all of sudden, and the lamp blinks. [CH00] appears

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