В приложении "магазин" откройте файл filters.html
1) и замените там строку:

<b data-feature="{$fid}"><span class="fiwex-feat" data-feat_id="{$filter.id}">{$filter.name|escape}</span><i class="{if in_array($fid, explode(',', $shop_filters))}icon-caret-up{else}icon-caret-down{/if}"></i></b>

строкой:

<b data-feature="{$fid}"><span class="fiwex-feat" data-feat_id="{$filter.id}">{$filter.name|escape}</span><i class="icon-caret-up"></i></b>

2) замените строку:

<p class="{if isset($filter.min)}fslider{/if}{if in_array($fid, explode(',', $shop_filters))} active"{else}" style="display: none;"{/if}>

строкой:

<p class="{if isset($filter.min)}fslider{/if} active">