I purchased a Milwaukee CO2 regulator about eight months ago. It has been running smoothly up until a week ago. The only problem I had with it was adjusting the bubble rate which seems to be a common issue with the regulator. the problem I'm experiencing now is the solenoid valve. I have it on a timer and i heard it shut off and thought nothing of it. Before i went to bed i went and looked at my tank and noticed it was still bubbling gas into the tank. I checked the timer; turned it off of time mode and straight to line power. I also tried unplugging it and plugging it back in. Nothing has reset it. Does anybody know what the issue may be? Fixable or not?