Well I was just wondering if any of you had a ORP probe stick low on you causing your O3 to run constantly. Once I noticed mine I took the probe out and calibrated it and it has been running fine since. Guess next probe will be lab grade and not a Pinpoint. I have a ACIII and was wondering if there was any code anyone has came up with to guard against this. I can tell by the graph that is started to fail between the 13th and 19th but I never noticed it. Will have to come up with some kind of code to keep this from happening again. With a Eclipse 1 Series generator made for a 7k gal to 25k gal pool it can cause some damage on the tank if not controlled.