fancontrol-gui/plasmoid/package/contents/config/main.xml

<?xml version="1.0" encoding="UTF-8"?>
<kcfg xmlns="http://www.kde.org/standards/kcfg/1.0"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0
      http://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
    <kcfgfile name=""/>

    <group name="General">
        <entry name="Fan" type="Int">
            <default>0</default>
        </entry>
    </group>

</kcfg>