It's very difficult to use this slow cooker because of only 4 settings. Many recipes call for 4 hours high and 4 hours low. I cannot find how to do 2 different settings for one session without being there to watch, which defeats the purpose of this appliance. My old unit gave me the choice of 30 minute increments and would switch from high to low as programmed, then kept food warm until supper. I noticed in all the responses, people were asked to call the service department. That doesn't seem to address the problem of the one temperature system.