Intermittent Fan - Beam box

Just discovered a problem to my fan cycling on and off during cutting.
I found that if you raise the clear cover before the job is complete, meaning that the fan is still on, it will create a software problem that successive jobs won’t allow the fan to work continuously.
The solution I found was to shut the machine down and reboot it. Then it worked just fine, and as long as I don’t raise the cover until the fan shuts down it works just fine.