My 2nd bisque firing went successful. After replacing the defective thermo couple sensor, firing went smoothly without error code or anything. It took approximately 16 hours and interestingly enough my basement studio didn't get as hot as the last firing. I guess having the lid locked tight maybe have something to do with the temperature. I will do another bisque firing next week before the upcoming art festivals. After that, I would like to try my first glaze firing. I love having the kiln in my home! And I love my L&L kiln!