I'm sorry, I don't have an answer, but my radarange also began this odd behavior about a month ago... my son is a mechanic has almost forbade me to use it, stating he gets a headache everytime he opens it.... Once the range stops cooking, I open the microwave to get the food out, and the range immediately turns back on, lights on, and carousel turning! I have NO IDEA if the microwaves are engaged at this point???!!! But suppose I need to find out ASAP!