These error codes indicate an inverter drive error is present. The error codes are for discontinued Diamante series systems.

<div data-block="true" data-editor="8h0fc" data-offset-key="3tpp7-0-0" id="isPasted" style="box-sizing: border-box; -webkit-font-smoothing: antialiased; color: rgb(34, 34, 34); font-family: Inter, &quot;Helvetica Neue&quot;, Arial, Helvetica, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: pre-wrap; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><h2 id="introduction"><u>Introduction</u></h2><p>The &quot;E9&#x201D; or &#x201C;P0&#x201D; error codes indicate an inverter drive error is present. The error code may display if the compressor or outdoor board is failing. These error codes are for discontinued Diamante series systems (WYT-19 and WYT-22).</p><h2 id="troubleshooting"><u>Troubleshooting</u></h2><ul id="isPasted"><li style="font-size: 16px;">Ensure the outdoor refrigerant valves are backed out all the way counterclockwise to the open position by ohming &#x3A9; out the compressor with a multimeter.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025053013-eea4bf9e-1c84-49b3-a84b-d3b9df88e8b9-outdoor_refrigerant_valves.png" style="width: 300px;" class="fr-fic fr-dib"></li><li style="font-size: 16px;">Remove the top and front panels of the unit to see the compressor.</li><li style="font-size: 16px;">Pull out the sound insulation blanket wrapped around the compressor.</li><li style="font-size: 16px;">Ohm &#x3A9; out 3 compressor lead pairs on the large white Molex plug between the compressor and the board. The plug usually has red, blue, and white (or black) wires, meaning you will test each pin against each other.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025053013-4becf0df-c909-471c-8d75-d0acc0db4c07-molex_plug.png" style="width: 300px;" class="fr-fic fr-dib"></li><li style="font-size: 16px;">Test each wire individually against the ground using the metal casing of the unit or a ground screw. The wires should not have any reading against the ground. The compressor should not be grounded. The multimeter should read &#x201C;0&#x201D; or &#x201C;Open Line.&#x201D;</li><li style="font-size: 16px;">If the compressor works properly, replace the outdoor Inverter Power Module (IPM) board.</li></ul><p><strong id="isPasted">Note</strong>: Contact our Parts and Warranty department for any replacement components. Call 1-800-919-0150; Option #4.</p><h2 id="troubleshooting-diagram"><u>Troubleshooting Diagram</u></h2><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025052818-ba7d4073-910e-4d43-86a6-3af3176b82a2-aebe42f2-3f98-4127-b34e-c11c2bada248.png" id="isPasted" class="fr-fic fr-dib fr-bordered"></p><h2 id="related-resources"><u>Related Resources</u></h2><ul id="isPasted"><li style="font-size: 16px;">Click this link for a general parts diagram of the WYS wall mount. The diagram displays the compressor in the outdoor unit: <a href="https://www.pdhvac.com/site/downloads/wys22_Exploded_Parts_Diagram.pdf">WYS Wall Mount Parts Diagram</a>&#xA0;</li><li style="font-size: 16px;">See page 90 in this manual to learn how to open the outdoor condenser unit: <a href="https://www.pdhvac.com/site/downloads/WYS_SM.pdf" target="_blank" rel="noopener noreferrer">Quantum Inverter Series Service &amp; Troubleshooting Manual</a></li></ul></div><div data-block="true" data-editor="8h0fc" data-offset-key="98m18-0-0" style="box-sizing: border-box; -webkit-font-smoothing: antialiased; color: rgb(34, 34, 34); font-family: Inter, &quot;Helvetica Neue&quot;, Arial, Helvetica, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: pre-wrap; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><br></div>

E9/P0 error codes

The “0A” code indicates the Diamante series system has been placed into “Generator” or “Gen” mode. The code is for discontinued Diamante series systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>The &#x201C;0A&#x201D; code indicates the system has been placed into &#x201C;Generator&#x201D; or &#x201C;Gen&#x201D; mode. The &#x201C;0A&#x201D; code is not an error code. The code is for discontinued Diamante series systems (WYT-19 and WYT-22).</p><p>Generator mode is helpful for unstable net power areas. The air conditioner operates in Generator mode.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025053013-61eb6df6-1995-49ec-8152-b0b6f935c6c2-generator_mode_details.png" style="width: 450px;" class="fr-fic fr-dib"><span contenteditable="false" draggable="false"><br></span></p><p><strong>Note</strong>: Diamante Series systems enter Generator mode after holding the &#x201C;Mute&#x201D; button on the remote for 3 seconds.</p><h2 id="isPasted"><u>Exit Generator Mode</u></h2><ol><li style="font-size: 16px;">Turn on the indoor unit.</li><li style="font-size: 16px;">Press and hold the &#x201C;Mute&#x201D; button for at least 3 seconds. The remote will enter the setting interface of &#x201C;Generator&#x201D; mode.</li><li style="font-size: 16px;">Press the &#x201C;Mute&#x201D; button consecutively until &#x201C;OF&#x201D; displays on the remote.</li><li style="font-size: 16px;">Wait until the &#x201C;OF&#x201D; symbols on the remote blink.</li></ol><p><strong>Result</strong>: The indoor unit will exit &#x201C;Generator&#x201D; mode.</p><p><strong>Note</strong>: Use the Pioneer Airlink App to fully control &#x201C;Generator&#x201D; mode, including turning the system on or off.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025053013-62f15a00-e74f-4bca-937f-a186c78ed663-generator_mode_app.png" style="width: 300px;" class="fr-fic fr-dib">&#xA0;</p><h2 id="isPasted"><u>Video Tutorial</u></h2><p>Watch this video tutorial to learn how to exit generator mode:</p><p><span class="fr-video fr-deletable fr-rv fr-fvc fr-dvb fr-draggable fr-active" contenteditable="false" draggable="true"><iframe width="100%" src="https://www.youtube.com/embed/tUjc9UxfqDc?&amp;wmode=opaque&amp;rel=0&amp;autoplay=1" 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><span class="fr-mk" style="display: none;">&#xA0;</span><span class="fr-mk" style="display: none;">&#xA0;</span></iframe></span></p><p>Video length: 0:16</p>

Indoor unit displaying 0A code

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Use these troubleshooting guides to resolve errors for Diamante WYT-19 and WYT-22 systems.

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Pioneer Airlink App

Diamante Series Systems (WYT-19, WYT-22)

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Ducted Central Split DYR Series

NetHome Plus

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E0 error code

E1 or E2 error codes

E3, E7, or E8 error codes

E4 error code

E6 error code

E9 error code

EF error code

EU error code

FY error code

P0 error code

P1 error code

P2 error code

Troubleshooting (Diamante Series)

CL error code

PA error code for multi-zone Quantum Ultra systems

Troubleshooting (Quantum Series)

E1/EL 01/EL01 error codes

E3/EH 03/F5/EC 07 error codes

EC/EL 0C error codes

F4/EC51 error codes

LCAC error codes

P0/PC00 error codes

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PC 03/PC03 error codes

P4/PC 04/PC04 error codes

Troubleshooting (WYS, CYB, RYB, UYB, & FYB)