This error code indicates the system needs a filter cleaning. This troubleshooting article is for Diamante and Quantum series systems.

<h2 id="introduction"><u>Introduction</u></h2><p>The &quot;CL&quot; error code indicates the system needs a filter cleaning. The code acts as a reminder to clean the filter and disappears after a period of time. This article is for Diamante and Quantum series systems.&#xA0;</p><h2 id="troubleshooting"><u>Troubleshooting</u></h2><p><strong id="isPasted">Note</strong>: An HVAC professional may be required for assistance.</p><ul><li style="font-size: 16px;">Clean the unit&apos;s filters.&#xA0;</li><li style="font-size: 16px;">Reset the system after cleaning the filters to clear the error code.&#xA0;</li><li style="font-size: 16px;">If the code still displays, clear the unit&apos;s memory by resetting the breaker. The code will disappear after resetting the breaker.</li></ul><h2 id="troubleshooting-diagram"><u>Troubleshooting Diagram</u><u><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025111315-14ab9b8c-89fc-4452-b3d0-41554bbaf915-cl_troubleshooting_diagram.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></u></h2>

CL error code

This article explains how to clean the anti-dust filters for the Diamante Essenza and Diamante Pro systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to clean the anti-dust filters for the Diamante Essenza (WYT-17) and Diamante Pro (WYT-20) systems.&#xA0;</p><p>Cleaning the anti-dust filters is part of the maintenance required to ensure the system stays efficient. Inspect the anti-dust filters once every two weeks.&#xA0;</p><p>Before carrying out any sort of maintenance, ensure that the power supply for the system has been turned off for more than 5 minutes. Wear safety gloves when working on the equipment, due to the sharp aluminum fin edges of the coil.</p><p><strong>Note:</strong> Accessorial electrostatic or deodorizing filters are not washable and should be replaced every 6 months.&#xA0;&#xA0;</p><h2 id="steps"><u>Steps</u></h2><p>Follow these steps to properly clean the anti-dust filters:&#xA0;</p><ol><li>Open the front panel by pulling outward and upward at the indicated location.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-8bdb1ca4-4f2c-4972-ac5d-695b4d33761f-wyt17_antidust_filters_1.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-71f373cf-8f25-4323-9962-9107bf3a016b-wyt17_antidust_filters_2.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Keep the front panel raised with one hand, then remove the air filter with the other.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-181e251a-0bd6-462f-a261-77ce4fd7001e-wyt17_antidust_filters_3.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>The filters are washable and should be cleaned with warm water (under 104&#xB0;F/40&#xB0;C).&#xA0;</li><li>Leave the filters to dry in a cool, dry place.&#xA0;</li><li>Keep the front panel raised with one hand, then insert the air filters with the other.&#xA0;</li><li>Close the front panel.&#xA0;</li></ol><h2 id="interior-of-the-indoor-air-handler"><u>Interior of the Indoor Air Handler</u></h2><p>In addition to the filters, inspect the interior of the indoor unit as well as the inner coil every season. Disconnect the front panel and remove the top hinge where the pegs connect. This will offer easier inspections of the interior and behind the air filters.&#xA0;</p><p>Clean the interior with a damp, soft cloth and neutral soaps. Do not use any types of aggressive solvents or detergents. Do not spray water directly near the indoor unit, as it can damage insulation and electrical components.&#xA0;</p>

Clean the Anti-Dust Filters for Diamante Essenza and Pro Systems

This article explains how to clean the anti-dust filters for the Quantum Ultra High Wall-Mount and Quantum Hyperformance systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to clean the anti-dust filters for the Quantum Ultra High Wall-Mount (WYT-24) and Quantum Hyperformance (WYT-25) systems.&#xA0;</p><p>Cleaning the anti-dust filters is part of the maintenance required to ensure the system stays efficient. Inspect the anti-dust filters once every two weeks.&#xA0;</p><p>Before carrying out any sort of maintenance, ensure that the power supply for the system has been turned off for more than 5 minutes. Wear safety gloves when working on the equipment, due to the sharp aluminum fin edges of the coil.</p><p><strong>Note:</strong> Accessorial electrostatic or deodorizing filters are not washable and should be replaced every 6 months. &#xA0;</p><h2 id="steps"><u>Steps</u></h2><p>Follow these steps to properly clean the anti-dust filters:&#xA0;</p><ol><li>Reach for the top area of the interior unit and grasp both the exposed handles.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-e8746c00-f7a6-40bf-a99f-4818cb34e5d2-wyt24_air_dust_filters_1.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Gently remove the single anti-dust filter by pulling upwards and backwards.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-1cbeea09-0241-4afe-985b-55c78575c2b0-wyt24_air_dust_filters_2.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Clean the filters with warm water (under 113&#xB0;F/45&#xB0;C).&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-8b691634-cba6-47d2-8f57-f1f14103d372-wyt24_air_dust_filters_3.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Leave the filters to dry in a cool, dry place.&#xA0;</li><li>Re-insert the filter into the same location after it has sufficiently dried.&#xA0;</li></ol><h2 id="isPasted"><u>Interior of the Indoor Air Handler</u></h2><p>In addition to the filters, inspect the interior of the indoor unit as well as the inner coil every season. Disconnect the front panel and remove the top hinge where the pegs connect. This will offer easier inspections of the interior and behind the air filters.&#xA0;</p><p>Clean the interior with a damp, soft cloth and neutral soaps. Do not use any types of aggressive solvents or detergents. Do not spray water directly near the indoor unit, as it can damage insulation and electrical components.&#xA0;</p>

Clean the Anti-Dust Filters for Quantum Ultra High Wall-Mount and Hyperformance Systems

This article explains how to clean the anti-dust and fresh-air filters for Quantum Fresh systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to clean the anti-dust and fresh-air filters for Quantum Fresh (WYT-FA) systems.&#xA0;</p><p>Cleaning the filters is part of the maintenance required to ensure the system stays efficient. Inspect the filters once every two weeks.&#xA0;</p><p>Before carrying out any sort of maintenance, ensure that the power supply for the system has been turned off for more than 5 minutes. Wear safety gloves when working on the equipment, due to the sharp aluminum fin edges of the coil.</p><p><strong>Note:</strong> Accessorial electrostatic or deodorizing filters are not washable and should be replaced every 6 months. &#xA0;</p><h2 id="steps-for-cleaning-anti-dust-filters"><u>Steps for Cleaning Anti-Dust Filters</u></h2><p>Follow these steps to properly clean the anti-dust filters:&#xA0;</p><ol><li>Open the front panel by pulling outward and upward at the indicated location.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-37b2a547-fc2f-44a5-ba09-d5ad626d1c1e-wyt_fa_anti_dust_filters_1.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Keep the front panel raised with one hand, then remove the air filter with the other.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-ccef60a7-4929-4344-9757-1dbadd7429bf-wyt_fa_anti_dust_filters_2.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>The filters are washable and should be cleaned with warm water (104&#xB0;F/40&#xB0;C).<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-1876b00d-fdfc-4770-9bc7-db680638499a-wyt_fa_anti_dust_filters_3.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Leave the filters to dry in a cool, dry place.&#xA0;</li><li>Keep the front panel raised with one hand, then insert the air filters with the others.&#xA0;</li><li>Close the front panel.&#xA0;</li></ol><h2 id="isPasted"><u>Steps for Cleaning Fresh-Air Filters</u></h2><p>Follow these steps to properly clean the fresh-air filters:&#xA0;</p><ol><li>Open the front panel and remove the filter holder.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-69a9796a-d26b-468e-a9e5-e93332eac2c0-wyt_fa_fresh_air_filter.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Clean the filter using a vacuum or replace with a new one.&#xA0;</li><li>When the usable filter life is less than 20%, the panel will display the remaining lifetime with a blinking icon, indicating that the filter will need to be replaced with a clean one soon.&#xA0;</li><li>After replacing the EPA (Efficient Particulate Air) filter, hold down the Fresh Air button for 5 seconds to reset the memory.&#xA0;</li></ol><h2 id="isPasted"><u>Interior of the Indoor Air Handler</u></h2><p>In addition to the filters, inspect the interior of the indoor unit as well as the inner coil every season. Disconnect the front panel and remove the top hinge where the pegs connect. This will offer easier inspections of the interior and behind the air filters.&#xA0;</p><p>Clean the interior with a damp, soft cloth and neutral soaps. Do not use any types of aggressive solvents or detergents. Do not spray water directly near the indoor unit, as it can damage insulation and electrical components.&#xA0;</p>

Clean the Anti-Dust Filters for Quantum Fresh Systems

This article explains how to clean the anti-dust filters for the Quantum Ultra Ceiling Cassette systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to clean the anti-dust filters for the Quantum Ultra Ceiling Cassette (CYT-24) systems.&#xA0;</p><p>Cleaning the anti-dust filters is part of the maintenance required to ensure the system stays efficient. Inspect the anti-dust filters once every two weeks.&#xA0;</p><p>Before carrying out any sort of maintenance, ensure that the power supply for the system has been turned off for more than 5 minutes. Wear safety gloves when working on the equipment, due to the sharp aluminum fin edges of the coil.</p><p><strong>Note:</strong> Accessorial electrostatic or deodorizing filters are not washable and should be replaced every 6 months. &#xA0;</p><h2 id="steps"><u>Steps</u></h2><p>Follow these steps to properly clean the anti-dust filters:&#xA0;</p><ol><li>Reach for the top area of the interior unit and grasp both the exposed handles.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-f7feae04-6781-4241-b7e9-36c5ee3ab4fc-cyt_24_anti_dust_filters_1.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Gently remove the single anti-dust filter by pulling upward and backwards.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-4a78b8f6-54ed-440a-bd26-bc2a25ab03f4-cyt_24_anti_dust_filters_2.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Clean the filters with warm water (under 113&#xB0;F/45&#xB0;C).<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112516-1534ab8a-fa7f-428b-b866-7e15db63b7ff-cyt_24_anti_dust_filters_3.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Leave the filters to dry in a cool, dry place.</li><li>Re-insert the filter into the same location after it has sufficiently dried.&#xA0;</li></ol><h2 id="isPasted"><u>Interior of the Indoor Air Handler</u></h2><p>In addition to the filters, inspect the interior of the indoor unit as well as the inner coil every season. Disconnect the front panel and remove the top hinge where the pegs connect. This will offer easier inspections of the interior and behind the air filters.&#xA0;</p><p>Clean the interior with a damp, soft cloth and neutral soaps. Do not use any types of aggressive solvents or detergents. Do not spray water directly near the indoor unit, as it can damage insulation and electrical components.&#xA0;</p>

Cleaning the Anti-Dust Filters for Quantum Ultra Ceiling Cassette Systems

This article explains how to clean the anti-dust filters for the Quantum Ultra Ducted Ceiling Concealed systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to clean the anti-dust filters for the Quantum Ultra Ducted Ceiling Concealed (RYT-24) systems.&#xA0;</p><p>Cleaning the anti-dust filters is part of the maintenance required to ensure the system stays efficient. Inspect the anti-dust filters once every two weeks.&#xA0;</p><p>Before carrying out any sort of maintenance, ensure that the power supply for the system has been turned off for more than 5 minutes. Wear safety gloves when working on the equipment, due to the sharp aluminum fin edges of the coil.</p><p><strong>Note:</strong> Accessorial electrostatic or deodorizing filters are not washable and should be replaced every 6 months. &#xA0;</p><h2 id="steps"><u>Steps</u></h2><p>Follow these steps to properly clean the anti-dust filters:&#xA0;</p><ol><li>For rear return-air configurations, remove the two screws to dislodge the return air filter.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112517-45d3718e-66f1-474d-932a-29a9c8ede8e0-ryt24_anti_dust_filters_1.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>For bottom return-air configurations, push the filter upward and withdraw it at a slight angle.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112517-cebe9728-6d7c-4764-93fd-fbe58966e786-ryt24_anti_dust_filters_2.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Clean the filters with warm water (under 113&#xB0;F/45&#xB0;C).&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112517-1d53de67-8fc5-4d42-9c35-a6869e294623-ryt24_anti_dust_filters_3.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Leave the filters to dry in a cool, dry place.&#xA0;</li><li>Re-insert the filter into the same location after it has sufficiently dried.&#xA0;</li></ol><h2 id="isPasted"><u>Interior of the Indoor Air Handler</u></h2><p>In addition to the filters, inspect the interior of the indoor unit as well as the inner coil every season. Disconnect the front panel and remove the top hinge where the pegs connect. This will offer easier inspections of the interior and behind the air filters.&#xA0;</p><p>Clean the interior with a damp, soft cloth and neutral soaps. Do not use any types of aggressive solvents or detergents. Do not spray water directly near the indoor unit, as it can damage insulation and electrical components.&#xA0;</p>

Clean the Anti-Dust Filters for Quantum Ultra Ducted Ceiling Concealed Systems

This article explains how to clean the anti-dust filters for the Quantum Ultra Floor-Ceiling Flex systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to clean the anti-dust filters for the Quantum Ultra Floor-Ceiling Flex (UYT-24) systems.&#xA0;</p><p>Cleaning the anti-dust filters is part of the maintenance required to ensure the system stays efficient. Inspect the anti-dust filters once every two weeks.&#xA0;</p><p>Before carrying out any sort of maintenance, ensure that the power supply for the system has been turned off for more than 5 minutes. Wear safety gloves when working on the equipment, due to the sharp aluminum fin edges of the coil.</p><p><strong>Note:</strong> Accessorial electrostatic or deodorizing filters are not washable and should be replaced every 6 months. &#xA0;</p><h2 id="isPasted"><u>Steps</u></h2><p>Follow these steps to properly clean the anti-dust filters:&#xA0;</p><ol><li>Approach the interior unit to reach the filter area and unlatch the grille to swivel outward.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112517-1b7b82eb-26b8-426f-bc1d-cf6553021aae-uyt24_anti_dust_filters_1.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112517-69b336ba-4a7f-4642-9277-5f2f442f4145-uyt24_anti_dust_filters_2.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Gently remove the single anti-dust filter along with the panel grille by sliding it out to the side.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112517-889fdb91-ea6f-46ef-b905-11be5a8a88b6-uyt24_anti_dust_filters_3.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Clean the filters with warm water (under 113&#xB0;F/45&#xB0;C).&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112517-81831ab8-cc74-462b-a1c3-da3451df7148-uyt24_anti_dust_filters_4.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Leave the filters to dry in cool, dry place.&#xA0;</li><li>Re-insert the filter into the same location after it has sufficiently dried.&#xA0;</li></ol><h2 id="isPasted"><u>Interior of the Indoor Air Handler</u></h2><p>In addition to the filters, inspect the interior of the indoor unit as well as the inner coil every season. Disconnect the front panel and remove the top hinge where the pegs connect. This will offer easier inspections of the interior and behind the air filters.&#xA0;</p><p>Clean the interior with a damp, soft cloth and neutral soaps. Do not use any types of aggressive solvents or detergents. Do not spray water directly near the indoor unit, as it can damage insulation and electrical components.&#xA0;</p>

Clean the Anti-Dust Filters for Quantum Ultra Floor-Ceiling Flex Systems

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Learn about filter cleaning methods and the CL code by reading these Help Center articles.

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