So I just got a stackable washer dryer unit, used but in excellent condition. I finally get it hooked up and discover that it won't run on cold. I can wash/rinse with both hot, wash/rinse with both warm, but cannot wash/rinse with both cold or even wash warm/rinse cold. Any cold water option just won't work, no water will run. My father said he noticed one that he recently bought does the same thing. I have the two hoses, hooked up to cold and hot inlets, so I don't get it. Does anyone know why I can't use cold water in the wash and/or rinse cycles? I might think something was wrong with it except that I know the people I bought it from, and my dad said the same thing just happened to him (and he does not know why either). Anyone?