So last night my Provari started popping out a 23 on the LED screen every time I take a good long hit. I switched my Nautilus tank to my other Provari and got the same code. My other, less favored tanks do not seem to produce this code. Since both Provaris produce the same code, the problem is obviously not with the Provari, but with the tank. The on-line manual doesn't help. Should I change my coil? Its only a few days old. I want to know what the 23 means. Thanks.