Replace default Entypo Fontello SVG icons in Easy Slider and Content Slider

you can find the defintions of standard icons on enfold/includes/config-enfold/init-base-data.php

Easy Slider is on default using:

'svg__next_big'  	=> array( 'font' => 'svg_entypo-fontello', 'icon' => 'right-open-big' ),
'svg__prev_big'  	=> array( 'font' => 'svg_entypo-fontello', 'icon' => 'left-open-big' ),

The Filter you can use to change these icons is: avf_default_icons

you can use it like this in your child-theme functions.php:

function avia_replace_default_icons($icons){
// e.g.: changed by uploaded svg files - using the ID's and the font-name is svg_wp-media-library
	$icons['svg__prev_big'] =  array( 'font' =>'svg_wp-media-library', 'icon' => '50913');
	$icons['svg__next_big'] =  array( 'font' =>'svg_wp-media-library', 'icon' => '50591');     
	return $icons;
}
add_filter('avf_default_icons','avia_replace_default_icons', 10, 1);

but: What is the font-name of your uploaded icon-set

you find that information on :

now f.e. if you like to replace these standard icons by icons of the iconset : medical

function avia_replace_default_icons($icons){
	$icons['svg__prev_big'] =  array( 'font' =>'medical', 'icon' => 'uf101');
	$icons['svg__next_big'] =  array( 'font' =>'medical', 'icon' => 'uf135');     
	return $icons;
}
add_filter('avf_default_icons','avia_replace_default_icons', 10, 1);

you can find those font icon codes f.e. on trying to place that icon you like to have and hover it :
( it is the value inside the brackets – without that backslash)