Thomas C Waynesburg , PA April 25, 2017 Appliance: Model 20 YEAR OLD AMANA DOWNDRAFT UNIT F3 & f2 displayed First I changed out the temp sensor, oven still displayed same codes. Then I changed out the bake element which only took minutes with a screwdriver. display still shows f3. On to the next step. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes