I came into my room to find a huge puddle of water on the ground(condensation) with the co2 blasting nonstop. Somehow the solenoid valve got stuck open. I took the valve apart to clean it out thinking maybe a piece of dirt or something got stuck in there and made it hang open. Not sure why this happened? Was it a piece of debris that got caught in there or was it becuase I didnt have the main tank valve all the way open? Anyway I pretty much lost all the co2 from the tank and now I dont trust the co2 system. After cleaning the solenoid valve it works fine but now I dont trust the system to work right. Has anyone ever had this happen. Are there any bad effects from this much co2 being released into the room. I'm sure any bug that was in there is now dead however. The regulator is brand new.
In welding, shielding gas tanks use small heaters on the regulators. High and constant flow =expanding gas=cold. I'm thinkin' your losing too much gas through heat venting or somthing and it's running too often, maybe.
I've had this happen before also......like the above poster said, the solenoid may have froze, but if not, the solenoid just stuck open. I remedied the problem in my regulator by disassembling the solenoid and stretching the spring just a bit to add more tension/pressure on the valve. It sucks to come in and find your tank empty in only a short time. If your regulator is brand new, I'd try to return it and get a CAP or a Sentinel. HTH chunk