I also have Solos. If I loosen the tank, press the fire button to have the no atomizer message, change the mod off, tighten the tank, and switch the mod back again on, I get that message. I just did that and it mentioned Old Coil 0. It really is https://arlinkdirectory.com/listings13017369/the-greatest-guide-to-geekvape-z-max-tan