My frigidaire dryer goes on, and gets hot, but the clothes don't get dry. I also need the manual as I may not be putting it on the right setting. There is a switch that can slide, and the diagram shows a fully colored blue sun on one side, and half colored on the other side, I don't know what this means. The filter is clean. The model number is 39P450 Simpson P/L 4.5 Kg.