Hot water system alternates between water ready and add water

As of today Cuisinart has replaced my model: CHW-12 (under warranty) two times. I’m now on my third machine. If your machine is still under the 12 month manufactures warranty, I suggest you call them and request a replacement. The last time I did, all Cuisinart customer service wanted was to verify that the appliance was still under registered warranty. Once verified they gave me the return info (only send the appliance cord not the entire machine) and in a couple of weeks they sent a new machine. If you have to go this route be sure to register the replacement machine. I’ve now done this twice. Hopefully this time the new machine they recently sent to me will last longer than six months. I hope this is some help, good luck.