Help Library: Help Library: LG Air conditioner - No warm air during heating (Preheat)

No warm air during heating (Preheat)

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<img style="WIDTH: 48px; HEIGHT: 48px" border="0" alt="check point" src="https://gscs.lge.com/gscs/support/fileupload/downloadFile.do?portalId=P1&amp;fileId=BD_N-1429070571123"/>&nbsp;

Check Point

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<p style="TEXT-ALIGN: left; MARGIN-TOP: 0pt; TEXT-INDENT: -0.32in; unicode-bidi: embed; DIRECTION: ltr; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0.32in; language: ko; mso-line-break-override: none; punctuation-wrap: hanging">

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1. Indoor unit does not blow warm air when heating starts.

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2. The product is preparing for heating. 
<p style="TEXT-ALIGN: left; MARGIN-TOP: 0pt; TEXT-INDENT: -0.32in; unicode-bidi: embed; DIRECTION: ltr; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0.32in; language: ko; mso-line-break-override: none; punctuation-wrap: hanging">

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<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt; mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">Indoor fan will not run until the unit reaches a certain temperature to prevent blowing cold air.
<p style="TEXT-ALIGN: left; MARGIN-TOP: 0pt; TEXT-INDENT: -0.32in; unicode-bidi: embed; DIRECTION: ltr; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0.32in; language: ko; mso-line-break-override: none; punctuation-wrap: hanging">

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<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">. Please check if a preheat icon appears on the remote controller. 
<p style="TEXT-ALIGN: left; MARGIN-TOP: 0pt; TEXT-INDENT: -0.32in; unicode-bidi: embed; DIRECTION: ltr; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0.32in; language: ko; mso-line-break-override: none; punctuation-wrap: hanging">

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<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt; mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">Refer to product display on the wired remote controller. 
<p style="TEXT-ALIGN: left; MARGIN-TOP: 0pt; TEXT-INDENT: -0.32in; unicode-bidi: embed; DIRECTION: ltr; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0.32in; language: ko; mso-line-break-override: none; punctuation-wrap: hanging">

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<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">If an outdoor unit has been left in a cold environment and unused for a long time, preheat may take longer. 
<p style="TEXT-ALIGN: left; MARGIN-TOP: 0pt; TEXT-INDENT: -0.32in; unicode-bidi: embed; DIRECTION: ltr; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0.32in; language: ko; mso-line-break-override: none; punctuation-wrap: hanging">

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family: 돋움; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family: 돋움; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;Installed in an open area&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Rear-side view

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family: 돋움; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (On a support)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (A heat exchanger and grilles)

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: ko; mso-ascii-font-family: Arial; mso-fareast-font-family: 돋움; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: ko; mso-ascii-font-family: Arial; mso-fareast-font-family: 돋움; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - Frost growth&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;- Defrosting, thawing frost&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - Defrosting complete

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: ko; mso-ascii-font-family: Arial; mso-fareast-font-family: 돋움; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;- No frost or residues

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<span style="FONT-FAMILY: Arial; COLOR: #a50034; FONT-SIZE: 12pt; language: en-US; mso-ascii-font-family:맑은 고딕; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12.0pt">Vapor can be observed as frost melts during defrosting.

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">
 
If your LG heating appliance&nbsp; is not producing warm air during the preheat , here's a troubleshooting guide covering potential issues and solutions for various models:

<li>Check Power Supply:

<ul>

<li>Ensure that the appliance is properly plugged in and receiving power. Check the circuit breaker to ensure it's not tripped.</li></ul></li>

<li>Verify Settings:

<ul>

<li>Confirm that you have set the appliance to the correct heating mode and temperature. Refer to the user manual for specific instructions.</li></ul></li>

<li>Clean the Appliance:

<ul>

<li>Ensure that the appliance, especially the vents and filters, is clean and free of obstructions. Dust and debris can impact heating efficiency.</li></ul></li>

<li>Check for Error Codes:

<ul>

<li>Some LG models have digital displays that show error codes. Consult the user manual to decode any error messages and follow the recommended troubleshooting steps.</li></ul></li>

<li>Examine Electrical Connections:

<ul>

<li>Check all electrical connections to make sure they are secure. Loose or damaged wiring can prevent the appliance from heating properly.</li></ul></li>

<li>Check for Blockages:

<ul>

<li>Ensure that air vents and ducts are not blocked. Blockages can prevent proper airflow and heating.</li></ul></li>

<li>Reset the Appliance:

<ul>

<li>Sometimes, resetting the appliance can resolve issues. Turn off the power to the appliance, wait a few minutes, and then turn it back on.</li></ul></li>

</ol>&nbsp;

<span style="FONT-FAMILY: Arial; COLOR: black; FONT-SIZE: 10pt; language: en-US; mso-ascii-font-family: Arial; mso-fareast-font-family:맑은 고딕; mso-bidi-font-family: Arial; mso-color-index: 1; mso-font-kerning: 12.0pt">&nbsp;

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LG Air conditioner - No warm air during heating (Preheat)

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