In a small saucepan, cook together S.O.S. Mix and water. Heat slowly until thickened and starting to boil. Stir frequently.
While S.O.S. Mix is thickening, add chopped potatoes, crumbled bacon, milk, dill, pepper, and salt to slow cooker.
Once S.O.S. Mix is thickened, add to slow cooker.
Cook soup on high for 4 hours or until potatoes are tender. Stir regularly.