I own a 2008 Holiday Rambler Ambassador motorhome. The Norcold refrigerator (model 1210 IMSS) has always had an excess of frost buildup on the cooling fins, but now itâ€™s to the point that I have to defrost it a couple of times a week when I am on the road. I suspect itâ€™s the door seals. I tried inserting a dollar bill between the seals and the door jam, and there was some drag, but not a lot as I extracted the bill. I also went to Norcoldâ€™s website and couldnâ€™t find replacement door seals. The frost seems to build up on the right hand side first, if that is any sort of clue.Â
Bill Goodmon l Via email
Frost comes from moisture in the air. It has to get in either from leaving the doors open, or from leaky seals, or a combination of both. Try calling Norcold at 800-543-1219. I have heard that the company will supply customers with replacement seals free of charge on this model.
— Ken Freund