Those who have a residential refrigerator in your Landmark have you had an issue with the condensation opening to the drain line freezing? I discovered the problem due to a wet floor. During the defrost cycle water was leaking to the bottom of the freezer then to the floor. Upon investigation I discovered that the condensation line opening in the freezer was frozen over. After thawing the freezer I was able to determine that the line is patent ( I poured water into it and observe it coming out of the exit port).