The company that built our pool seems lost on how to set up the Pentair Intellichem system. The pH keeps shooting up and every day the Pentair alarms go off and the techs stop by and dump lots of acid into the pool. Think Groundhog Day. They dumped so much yesterday that we went well below 7 pH. So I decided I ought to try to figure it out, starting by testing the water myself. The readings from the test kit were so out of wack that I took a water sample to the pool store for testing. Indeed the Chlorine is super high at 10. TA low at 70, CH low at 150, and Phosphates high at 200.
They had the ORP setting at the recommended level, but at that level the SWG was cranking out more chlorine continuously. The ORP set level is now lowered to 590 and the chlorine generator is idle. My question is, what in the water could be fooling the ORP sensor, when set at the recommended level, to think that there's not enough chlorine and demanding more chlorine?