i am getting some weird fluctuations in the temperature of the coil as read by the board. while vaping on it, i can hear the pulses you see in the graph when the temp goes down. while the graph says the temp is up, the vapor goes cold. i tried locking the ohms and it is still doing it. i don't have a screen installed, waiting for a replacement, but when i capture the screen it says temperature protection. any ideas on what would cause this and how to fix it? this is my first dive into temp control.