Water is leaking into the bottom freezer, and then freezing. This prevents the door from closing all the way and then the whole freezer starts ice crystalling. There is no water lin nor ice maker hooked up. I opened back panel, vacuumed everything out. The fan is working, the drain pan is dry. What should I check next? (Also I could not find specific diagram for the coils and drain lines, plugs. I was going to check for a clog.)
LG LFX25976ST