I have an LG LFCS31626S that I purchased in June 2016 and the ice maker isn't producing ice. I tried replacing ice maker itself, water control valve thing (??), and then thawed it out. I got one round of ice after thawing it out. I had a technician come out and diagnosed the problem as the "water heater" that prevents it from freezing is broken and not repairable since it's inside the unit. The compressor already has been replaced. Is there a "heater" so the water doesn't freeze up the line? If so, and it's broken - is there really nothing that can be done?