We have had the exact problem mentioned by many. Samsung customer service was no help and we are out of any service area. We were about to give up and sell the unit for a huge loss when we were very fortunate to find two YouTube videos that were very helpful. Basically you remove the inside panel at the back of the unit, defrost the ice buildup with a hair dryer (ours was totally loaded up with ice), and wrap a small wire (we used small gauge aluminum electric fence wire) around the black heater tube at the bottom of the evaporator and run the wire down into the drain hole. We installed two wires, one on each side of the hole. The factory has a small metal tab over the drain hole. The idea is that the heater element is supposed to heat that tab and keep the drain hole open but it is totally inadequate. The wire we add is supposed to heat up and since it extends into the drain hole it is supposed to keep the drain open. We just did this on 3/29/18 and have high hopes this maddening problem will be solved. Here are the links to the YT videos: https://www.youtube.com/watch?v=rwSSMF6Sj70 and https://www.youtube.com/watch?v=mPJ6xmQGWZQ Also, there is a bulletin on the web from Samsung describing the problem and suggesting relocating the heat sensor to an adjacent tube in the evaporator. I don't see how to add attachments or I would upload it to this site. This confirms that Samsung is aware of the problem even though they will not offer the solution. Apparently there is a class action lawsuit pending using the bulletin as proof that the problem is known. The irony is that the repair is so simple they could have addressed the problem rather than angering so many customers. Also, the nearest repair center (too far to come out to us) said there is a "leakage kit" from Samsung for around $29 to fix the problem. We have ordered one as well and will try to report on it when we get it.
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