Watch how easy it is, and get a few tips for upgrading a DriSteem Gas-to-Steam (GTS) humidifier controller from Vapor-logic version 3 to version 6. Upgrading to version 6 adds functionality and diagnostics, including a tri-color LED that conveys humidifier operating modes, demand conditions, and message alerts. Also notable for GTS is that version 6 of the controller features a cycle counter for each ignitor. https://player.vimeo.com/video/193631892