For information on disassembling the indoor unit of your WYS system, open the PDF instructions in the article.

<p id="isPasted">For information on disassembling the indoor unit of your WYS system<span style="font-size: 16px;">, use these PDF instructions:</span></p><div class="fr-deletable gorgias-file-attachment__wrapper" contenteditable="false"><div><i class="material-icons">attach_file</i> <a class="gorgias-file-attachment__anchor-name" href="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025060212-4dba8935-fa22-438f-bc24-eaf4e27e7ac8-wys%20series%20pioneer%20mini%20split%20indoor%20air%20handler%20-%20disassembly%20guide.pdf" target="_blank" rel="noopener noreferrer">WYS Series Pioneer Mini Split Indoor Air Handler - Disassembly Guide.pdf</a> <span class="gorgias-file-attachment__span-size">1.3MB</span></div><i class="material-icons gorgias-file-attachment__close-icon">close</i></div><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025060212-5fe14223-b160-4ea4-9257-d977e6421a62-a22505ff-cea8-4068-a545-7dce9a6cc251.png" id="isPasted" class="fr-fic fr-dib" style="width: 400px;"></p><p>In addition to the PDF instructions, you can use this video tutorial to learn how to open the inside unit and replace the fan motor:</p><p><span contenteditable="false" draggable="true" class="fr-video fr-deletable fr-rv fr-fvc fr-dvb fr-draggable"><iframe width="100%" src="https://www.youtube.com/embed/6IE7u6bfJZE?&amp;wmode=opaque&amp;rel=0" frameborder="0" allowfullscreen class="fr-draggable"><span class="fr-mk" style="display: none;">&#xA0;</span><span class="fr-mk" style="display: none;">&#xA0;</span></iframe></span></p><p><br></p>

Disassemble the WYS system inside unit

For information on disassembling the outdoor unit of your WYS system, open the PDF instructions in the article.

<p>For information on disassembling the outdoor unit of your WYS system, use these PDF instructions:</p><div class="fr-deletable gorgias-file-attachment__wrapper" contenteditable="false"><div><i class="material-icons">attach_file</i> <a class="gorgias-file-attachment__anchor-name" href="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025060213-89bcf246-dd19-44e5-8ba7-baa765c03675-wys%20series%20pioneer%20mini%20split%20outdoor%20unit%20-%20disassembly%20guide.pdf" target="_blank" rel="noopener noreferrer">WYS Series Pioneer Mini Split Outdoor Unit - Disassembly Guide.pdf</a> <span class="gorgias-file-attachment__span-size">2.1MB</span></div><i class="material-icons gorgias-file-attachment__close-icon">close</i></div><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025060213-970eeb4f-d426-4d04-a5cc-e22c04997b5c-wys_outdoor_unit_disassembly.png" style="width: 400px;" class="fr-fic fr-dib"></p>

Disassemble the WYS system outdoor unit

The WYS Wall Mounted systems have mechanized up-down (horizontal) louvers, allowing users to manipulate airflow output.

<h2 id="isPasted"><u>Introduction</u></h2><p>The WYS Wall Mounted systems have mechanized up-down (horizontal) louvers, allowing users to manipulate airflow output.</p><p>In addition to the up-down louver, the system usually has 3 to 4 side-to-side (vertical) flaps. You can manually adjust the side-to-side flaps to direct airflow to certain angles.</p><p>If you&apos;re checking for weak airflow, confirm no restrictions are present in the side-to-side flaps. Setting the side-to-side flaps straight or to the middle ensures maximal air output.</p><h2 id="isPasted"><u>Video Tutorial</u></h2><p>Watch this video tutorial demonstrating the adjustable flaps:</p><p><span contenteditable="false" draggable="true" class="fr-video fr-deletable fr-rv fr-fvc fr-dvb fr-draggable"><iframe width="100%" src="https://www.youtube.com/embed/UaTMIWxPpA4?&amp;t=12s&amp;wmode=opaque&amp;rel=0" frameborder="0" allowfullscreen class="fr-draggable"><span class="fr-mk" style="display: none;">&#xA0;</span><span class="fr-mk" style="display: none;">&#xA0;</span><span class="fr-mk" style="display: none;">&#xA0;</span><span class="fr-mk" style="display: none;">&#xA0;</span></iframe></span></p><p>Video length: 0:15</p>

Maximize airflow output for WYS systems

This article explains the difference between Inverter+ and Inverter++ systems.

<p id="isPasted">Understand the difference between Inverter+ and Inverter++ systems.</p><p>Despite both systems being wall-mounted ductless mini split air conditioners and heat pumps, the Inverter++ has a few different features than the Inverter+:</p><ul><li style="font-size: 16px;">While both models are highly efficient, the Inverter++ consumes less electrical power than the Inverter+. Despite consuming less electrical power, the Inverter++ achieves the same capacity and output as the Inverter+, helping you save money. The Inverter++ is Energy-Star rated. The Inverter+ is only Energy-Star rated for 9000 BTU.</li><li style="font-size: 16px;">The Inverter++ models perform better in frigid climates, possessing the ability to continue heating until ambient temperatures reach -13&#xB0;F. The Inverter+ series, which begins losing heating efficiency at around 42&#xB0;F, stops heating at 5&#xB0;F.</li><li style="font-size: 16px;">The Inverter++ is multi-zone capable, while the Inverter+ is not.</li><li style="font-size: 16px;">While both systems are quiet, the Inverter++ is quieter than the Inverter+.</li></ul>

Understand the difference between Inverter+ and Inverter++ systems

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Review these specific technical questions to gain a better understanding of your Pioneer wall-mounted WYS system. Use the Help Center articles and graphics. 

Learn more about your Pioneer WYS wall-mounted system

Products

Quantum Series Systems (WYS/CYB/RYB/UYB/FYB)

Technical Documentation (Quantum Series)

Technical questions regarding WYS wall-mounted systems.

WYS Wall Mounted

Do I need to restart my unit manually after the power goes out?

How can I fix my indoor air handler when the unit is not turning On?

How do I determine which breaker size and wire is needed for my system?

How does my system receive power?

What is the difference between 115V and 230V systems?

Electrical Related General Queries

Does the fan for my system shut Off in Cooling mode?

Does my system include factory pre-charged refrigerant?

How can I check the resistance of a Pioneer temperature sensor?

How can I fix leaks that are difficult to trace?

How can I locate the Pioneer model or serial number for my system?

How do I apply Pioneer Flare Leak Guard during installation?

Is there a Pioneer lineset diameter selection guide?

What are the requirements for installing a mini split?

What type of oil is used for my unit?

Why did my ductless mini split system freeze on the inside air handler?

Are the linesets pre-flared when I buy a mini split?

HVAC Related General Queries

Can a wall-mounted indoor unit be set onto the ceiling instead?

Can I operate the indoor unit without a remote control?

Can I turn Off the LED display for the indoor unit?

Can the lineset exit from the side of the indoor unit?

Does the indoor unit require anything extra in order to be mounted to the wall?

What is the ideal height for mounting indoor units?

What is the indoor unit’s weight and dimensions?

Indoor Unit

Are there recommended resources to find a professional near me?

Can the lineset be angled upward?

What gauge of wire is used for connections between the ductless mini split indoor and outdoor sections?

What hole saw size do I need for drilling walls to accommodate drain and refrigerant lines?

What is the cost and time spent on installing systems?

What torque wrench size do I need?

Where can I find wire-related information?

Who is permitted to install the A/C?

Installation

Why is my mini split leaking water improperly?

Plumbing and Drainage Queries

How can I access manuals and technical documents?

What is the telephone number to receive Tech Support?

Technical Support

General Technical Questions

Can a single-zone mini split be used with multiple indoor units?

Can I buy a Pioneer system that only offers cooling?

Can I order different lineset lengths?

Can I use a mini-split system with fewer indoor units than the outdoor unit's zonal capacity?

Do these split-type systems function as dehumidifiers?

Do you carry hyper-heat units (-22°F)?

Do you offer any discounts?

Do you offer pre-charged linesets?

How can I obtain spare parts?

How do I determine the unit size needed for my space?

How do I find an installer for my Pioneer Mini Split purchase?

How do I make a return?

How do I use my Pioneer Rewards Points when shopping?

How does the Energy-Star Federal Tax Credit work for Pioneer systems?

How do the units receive power?

What does “multi-zone” mean?

What is the difference between Inverter+ and Inverter++ systems?

What is the life expectancy of my system?

What is the Qualified Manufacturer ID for Parker Davis HVAC International?

What types of refrigerants are used in the new models?

Where can I learn more about IRA tax credits?

Which units are rated Energy-Star?

Why do I see multiple charges on my credit card?

Why does the discount code only say "SAMPLE" when trying to refer friends?

Frequently Asked Questions

Process for returning an item

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Start your return

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