I watched a YouTube the guy put weather stripping along the inside of the back wall / the part that comes off, he also put spray foam over the n shape pipes where there was ice he said it fixed his. Mine also does this, but there are Manual defrost buttons you can Google for instructions but on my ice maker I push fridge & freezer hold them down til it beeps & keep pushing freezer til it says RD refrigerator defrost & it will melt the ice itself. But should do this every wk or 2 to prevent bad ice build up & melt it before it gets to much. That’s what I’ve been doing lol