if its an auto defrost appliance go around the back and look for a cream plastic box mounted to the back of the fridge on the left hand side of the compressor.there is a little round plastic blanking plug which you need to prize out and then using a flat bladed screwdriver turn the defrost timer over manually (clockwise).IF IT STARTS TO RUN YOU HAVE A FAULT DEFROST TIMER AND WILL NEED TO REPLACE IT
