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<h1 class="wp-block-heading mb-0 has-text-32-font-size" id="ductless-system-troubleshooting" style="font-style:normal;font-weight:700">Ductless System Troubleshooting</h1>

These are some of the most common issues that your <a href="/residential/en/resources/glossary/what-is-a-ductless-hvac-system/">ductless (mini-split) system</a> might encounter, plus what you can do about them.&nbsp;

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<p class="has-text-16-font-size">These are some of the most common issues that your <a href="/residential/en/resources/glossary/what-is-a-ductless-hvac-system/">ductless (mini-split) system</a> might encounter, plus what you can do about them.&nbsp;</p>

Why won’t my ductless system heat or cool properly?

<h2 class="wp-block-heading mb-0 has-text-22-font-size" id="why-wont-my-ductless-system-heat-or-cool-properly" style="font-style:normal;font-weight:700">Why won’t my ductless system heat or cool properly?</h2>

Your <a href="/residential/en/resources/glossary/what-is-a-ductless-heat-pump/">ductless heat pump</a> or <a href="/residential/en/resources/glossary/what-is-ductless-air-conditioning/">ductless air conditioner</a> might have a problem heating and cooling because the outdoor coil is blocked. Try clearing away leaves or other debris around the unit. Your filters may also be dirty or clogged and need replacing or cleaning to get your mini-split HVAC back up and running. Regular <a href="/residential/en/resources/maintenance-tips/ductless-systems/">ductless system maintenance</a>, like changing the filters, can help prevent multiple issues.

<p class="mt-0 has-text-16-font-size">Your <a href="/residential/en/resources/glossary/what-is-a-ductless-heat-pump/">ductless heat pump</a> or <a href="/residential/en/resources/glossary/what-is-ductless-air-conditioning/">ductless air conditioner</a> might have a problem heating and cooling because the outdoor coil is blocked. Try clearing away leaves or other debris around the unit. Your filters may also be dirty or clogged and need replacing or cleaning to get your mini-split HVAC back up and running. Regular <a href="/residential/en/resources/maintenance-tips/ductless-systems/">ductless system maintenance</a>, like changing the filters, can help prevent multiple issues.</p>

Why isn’t my ductless system blowing hot or cool air?

<h2 class="wp-block-heading mb-0 has-text-22-font-size" id="why-isnt-my-ductless-system-blowing-hot-or-cool-air" style="font-style:normal;font-weight:700">Why isn’t my ductless system blowing hot or cool air?</h2>

This issue might be caused by the blower door being open. Try to close the door securely to restore power to the blower and gas valve. Also, your main gas line might be shut off and need to be turned on. If closing your blower door doesn’t work, contact your gas company to take further action.

<p class="mt-0 mb-0 has-text-16-font-size">This issue might be caused by the blower door being open. Try to close the door securely to restore power to the blower and gas valve. Also, your main gas line might be shut off and need to be turned on. If closing your blower door doesn’t work, contact your gas company to take further action.</p>

<h2 class="wp-block-heading mt-0 has-text-18-font-size" id="more-ac-troubleshooting" style="font-style:normal;font-weight:700">More Ductless System Troubleshooting</h2>

<a href="/residential/en/resources/troubleshooting/ductless-systems/do-mini-splits-have-filters/">Do Mini-Splits Have Filters, and How Do I Care for Them?</a>

<p class="has-text-16-font-size"><a href="/residential/en/resources/troubleshooting/ductless-systems/do-mini-splits-have-filters/">Do Mini-Splits Have Filters, and How Do I Care for Them?</a></p>

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<a href="/residential/en/resources/troubleshooting/ductless-systems/do-mini-splits-turn-off-when-temperature-is-reached/">Do Mini-Splits Turn Off When Temperature is Reached?</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/do-mini-splits-turn-off-when-temperature-is-reached/">Do Mini-Splits Turn Off When Temperature is Reached?</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/how-to-identify-and-fix-mini-split-refrigerant-issues/">How to Identify and Fix Mini-Split Refrigerant Issues</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/how-to-identify-and-fix-mini-split-refrigerant-issues/">How to Identify and Fix Mini-Split Refrigerant Issues</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-compressor-not-turning-on/">Mini-Split Compressor Not Turning On</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-compressor-not-turning-on/">Mini-Split Compressor Not Turning On</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/mitsubishi-mini-split-remote/">Understanding Your Trane/Mitsubishi Mini-Split Remote</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/mitsubishi-mini-split-remote/">Understanding Your Trane/Mitsubishi Mini-Split Remote</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/what-size-mini-split-do-i-need/">What Size Mini-Split Do I Need?</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/what-size-mini-split-do-i-need/">What Size Mini-Split Do I Need?</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-smells/">Why Does My Mini-Split Smell?</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-smells/">Why Does My Mini-Split Smell?</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/why-is-my-mini-split-leaking-water/">Why Is My Mini Split Leaking Water?</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/why-is-my-mini-split-leaking-water/">Why Is My Mini Split Leaking Water?</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-not-cooling/">Why Is My Mini-Split Not Cooling?</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-not-cooling/">Why Is My Mini-Split Not Cooling?</a></p>

<a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-not-working-in-heat-mode/">Why Is My Mini-Split Not Working in Heat Mode?</a>

<p><a href="/residential/en/resources/troubleshooting/ductless-systems/mini-split-not-working-in-heat-mode/">Why Is My Mini-Split Not Working in Heat Mode?</a></p>

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