GE monogram wall oven clicking noise

I have a GE monogram wall oven that makes a loud constant clicking noise when heating up as well as when it is cool down. I took it upon myself to try to do some repair work. What I found was a little strange. I first turned off the breaker and removed the front control panel to see if anything was unplugged then I put the panel back and tried the oven again but it was still clicking. Then I took the panel off but left the breaker on and turned on the oven. There is no clicking sound when the panel is off and the oven on, only when it is put back. What could this possibly be? Breaker, latch ?
Thank you for your help

via GE monogram wall oven clicking noise
by Firemedic