My Samsung Cool n Cool fridge freezer has regally and over time repeatedly frozen up under the bottom freezer draw. So much so that a thick sheet of ice would form covering the freezers bottom space. To solve this I would turn OFF the power. Remove all the draws and ice cube tray. Then unscrew the 4 screws holding the back panel in place. Gently nudging the panel free and tilt the bottom up ever slightly to expose the drainage pathway at the back and bottom, which was also frozen. As a result all the water was unable to escape via the back of the freezer drainage hole. Using boiling water and a turkey baster I would irrigate the ice filled drainage pathway until it flowed freely. This would take several applications of boiling water. To soak all the excess water, during the application of the boiling water, I would place a large folded towel at the bottom of the fridge.
Once deiced I would clean out the bottom of the fridge replace the back panel and all the interior workings of the freezer then turn the power back ON. This procedure would have to be repeated over and over again . I noticed that the fridge was constantly running after about 6 weeks had passed. This would alert me to the need for another deicing.
Recently I removed the wasted drip tray/reservoir at the back of the unit, the plastic one that sits above the motor and evaporates any waste water that accumulates there. I noted that the exit rubber piping from the fridge was whistle tipped and thought that this was preventing the waste water to flow freely. So I cut a piece of clear plastic tubing, you can purchase it from any hardware store, about the size of a weeding ring and placed it inside the waste exit pipe. This made sure that the exit was always open and allowing for the free passage of any waste water. This is no easy task and one has to do it blind and by feel/touch only. So be prepared to get all hot and sweaty preforming this small bit of adjustment but once in place your frozen ice problems are solved.
I have had no problems with frozen ice blocking the exit channel at the back of the freeze ever since. The fridge now is working well.
Daunting, February 2019