Hello,

Does it sound like the water valve is humming. If it does then you would want to check to make sure your water supply valves were not shut off. If they are on you could pull the hoses off unit and check to see if the screens inside the water valve are clogged. If they are clogged you would want to clean them and then check to see if water coming into unit. The unit will not run through cycles without water in the unit.