I JUST HAD THIS RANGE DELIVERED TODAY. THE INSTRUCTION SUGGEST YOU TURN THE OVEN ON FOR 30 MINUTES. IT MAKES A VERY LOUD ANNOYING HUMMING NOISE THE ENTIRE TIME IT'S ON BAKE.   I CALLED CUSTOMER SERVICE AND THEY SAID "THAT IS NORMAL".  THEY SUGGESTED I WAIT 24 HOURS AND TRY IT AGAIN. IF IT STILL DOES THAT THEY WOULD SEND A REPAIR MAN OUT. I ASKED HER WHY IF THIS IS "NORMAL"? I ASKED THE CUSTOMER SERIE REP ABOUT RETURNING IT. SHE ELUDED TO FACT THAT I COULDN'T; HOWEVER, THE PAPERWORK SAYS IT CAN BE RETURNED WITHIN "48" HOURS. REALLY???? I HAVE 48 HOURS TO FIND ANOTHER RANGE, AND GO THROUGH THE WHOLE DELIVERY PROCESS ALL OVER AGAIN? YOU KNOW BEING TIED UP FOR 4 HOURS. SO BASICALLY I'M STUCK WITH AN ANNOYING HUMMING OVEN.