I just installed a new Swimpure Plus generator. It works properly for a few hours, then the voltage reading becomes 33.6 (or something close to that). Also, the current display and the instant salt readings drop to zero. If I turn off the power and start the unit again it goes through the normal cycle with the no flow light for 60 seconds, then the click, and I get accurate readings again, but when I check the readings again a while later, they're back to zero for the current, instant salt. Does anyone know what might be wrong? I looked around the site and can't seem to find any threads that talk about my particular issue.