Help library: Help library: [LG air conditioner error codes] Check codes CH90/91

[LG air conditioner error codes] Check codes CH90/91

Troubleshooting Split Air Conditioners 11/11/2024

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<h2 class="tit"><a href="https://lg.com/support"><img src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=jwbyTbfzUf8F3Mj0COCgBQ&amp;portalId=P1" style=" width:1000px; height:89px; vertical-align:auto; border:none;" border="0" width="1000" height="89"/></a><br/></h2>
<h2 class="tit">Causes and Symptoms</h2>

<li>A CH90 (or CH91) error is displayed.</li>
</ul>
<p class="info-desc">In case of a CH90 or CH91 error, a check code is displayed to protect the product, mainly
at the Test Run stage.</p>

<h3 class="sub-tit">Is the product newly installed?</h3>
<p>
After installation, it is necessary to check the pipe connection status.<br/>
At first, it should be checked by an installation service technician.<br/>
Check if there is contact information for the installation service technician on the business card you
received at the time of installation or on the side of the product.<br/>
Ask the installation service technician for a precise inspection.
</p>

<h3 class="sub-tit">Did CH90 or CH91 occur while using the product rather than on a new installation or
relocation?</h3>
<p class="info-desc idt">➔ Disconnect the power cord of the product or trip the exclusive circuit breaker and
connect the power cord again or reset the circuit breaker again after approximately 5 minutes.</p>        <p>An error code that occurs in the product may be a temporary error due to unstable electricity supply or other
electrical factors.</p><p class="txt-idt">
※ If the same error occurs again after resetting the power, it should be checked by a service technician for
a precise inspection.
</p><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 error codes] Check codes CH90/91

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