I was at my head shop one day and I spoke to the owner and we tried to change the coil out with one supposedly made for it and all of a sudden my vape was blinking. I have a tsunami Vpower. Then we took the coil out and put the coil that was in the kit and it works fine. I don't know if the coil that is made for it wrong or what it means. I'm a newbie with vaping.