Hi,
You can modify in blocklayered.php in function ajaxCall() and before $smarty->assign( ) global $currency;
and in $smarty->assign() will be like this
$smarty->assign( array( 'homeSize' => Image::getSize('home'), 'nb_products' => $nb_products, 'category' => (object)array('id' => Tools::getValue('id_category_layered', 1)), 'pages_nb' => (int)($pages_nb), 'p' => (int)$p, 'n' => (int)$n, 'range' => (int)$range, 'start' => (int)$start, 'stop' => (int)$stop, 'n_array' => ((int)Configuration::get('PS_PRODUCTS_PER_PAGE') != 10) ? array((int)Configuration::get('PS_PRODUCTS_PER_PAGE'), 10, 20, 50) : array(10, 20, 50), 'comparator_max_item' => (int)(Configuration::get('PS_COMPARATOR_MAX_ITEM')), 'products' => $products, 'products_per_page' => (int)Configuration::get('PS_PRODUCTS_PER_PAGE'), 'static_token' => Tools::getToken(false), 'page_name' => 'category', 'nArray' => $nArray, 'currencySign' => $currency->sign, / 'currencyRate' => $currency->conversion_rate, 'currencyFormat' => $currency->format, 'currencyBlank' => $currency->blank, ) );
Need to add the last 4 lines.