My oven/stove is a professional series even cook convection oven. The broiling unit stopped working. I turn it on you can hear it click and a fan blowing. When I use the oven which works, as it heats up you can hear it click and the bar moves up and down until it reaches the correct temp. When the top part is supposed to be heating up and the light bar is up top, just a fan that comes on. The oven does heat up. But the broil part it won't work nor does it heat up.