I actually watched a YouTube video for LG refrigerators. The hardest part was taking the wire harness out. Mine was really stuck in there. But got it, put the new switch in and viola it worked. Yay!
The refrigerator had the above code and when I check on YouTube, it explained that the defrosting was not working properly. It was taking more than 80 minutes to defrost. I ordered the Temperature Sensor first and it was not the issue. I also ordered the Defrost Temperature fuse or the Thermistor. I had to defrost the refrigerator first by using a portable heater to get it done quickly. (See Youtube on how to get to the Defrosting Unit inside the freezer). The Thermistor was the wrong part. I called the Partselect and explained that the part with the heating element is one piece. (Heating Coil Thermistor or Heating Coil). By replacing that piece solved the Error Code issue. I listened to Youtube for the instructions on how to replace the Heater Coil. So if you see the Error Code dH F, you need to replace the Heating Coil, which comes in one piece and sits on the bottom of the Defrost Element.
I popped the old switch out of place and then disconnected the wire harness from the switch with a pair of needle nose pliers. I then inserted the harness into the new switch and popped the switch into place. Super easy and fast.