In December, I purchased a Electrolux 30-inch cook top from HHGreg. The cook top was installed in my new home in April. This cook top beeps E-11 and E-23 all night long. I have called Electrolux so many times. They keep sending repairmen out, but this cook top is junk. All night long it still beeps. When it beeps E-23 it cuts off for 10 to 20 minutes. It's now one week from thanksgiving and all my family is coming to my house to cook and Electrolux canceled my service call because the cook top in not in stock, they claim they will call me back in 24 hrs. My advice to anyone, don't buy Electrolux products. They are expensive junk. Right now I'll cook on anything.