I have a two door Dometic RM7030 with built in ice maker. Its in my 1993 Hawkins 36 Ltd Edition coach. I recently bought this coach and have been using it on and off for about six months. When the coach is first fired up after a storage break, the fridge makes a bucket full of ice, but after the fridge has been running a day or so, it stops. The freezer compartment is plenty cold, with frost on the upper shelves. The ice maker's arm raises to stop production of more ice when the bucket is full, as it should. However, when I lower it to resume ice production, no more ice is created. I suspect that the water line to the ice maker is frozen? If so any suggestions as to fix the situation?