I have a Panasonic sd252 which I dont use very often. This afternoon I decided to use it and put in the yeast the flour the milk powder the butter the sugar and finally the 400 mil of cold water. I did a basic bake set for four hours. The contents of the pan still havent done anything since 3.00pm.. no kneading has taken place ..everything is still "resting" can you troubleshoot this for me , please?