Do you have the following code block in your /includes/templates/your_template/templates/tpl_product_info_display.php?



<!--bof free ship icon -->
<?php if(zen_get_product_is_always_free_shipping($products_id_current) && $flag_show_product_info_free_shipping) { ?>
<div id="freeShippingIcon"><?php echo TEXT_PRODUCT_FREE_SHIPPING_ICON; ?></div>
<?php } ?>
<!--eof free ship icon -->