Answer to "Why is the "F dl" light come on"This board saved me money. I tried several of the above suggestions. I had the error code fdl and I remembers seeing f11 at some point in the last month. I ran a diagnosis which you can find how to do in the manual when you detach the bottom front panel it is lcoated in a pocket on the side of the machine. I proceeded to check the connectors on the cpu and clean them with air then make sure I reconnected very tightly. I also check the connectors on the door latch it self and made sure they were tight as well. I ran the diagnostic again and everything now works. I made sure to make the machine level so that it will not happen as quickly next time.