I also have Solos. If I loosen the tank, press the fireplace button to find the no atomizer information, convert the mod off, tighten the tank, and switch the mod back again on, I get that message. I just did that and it said Old Coil 0. This site works https://rowanwywtp.blogoxo.com/31648712/geekvape-h45-no-further-a-mystery