A Dacor convection wall oven was experiencing excessive noise during cooking. Upon inspection, I identified that the cooling fan was beginning to fail. I replaced the faulty cooling fan with a new one. After the replacement, I tested the fan to ensure it was operating smoothly and quietly. The noise issue was resolved, and the fan is now functioning as intended. The customer was pleased with the outcome and reported that the fan is back to its normal, quiet operation. In Desert Mountain.