Entering into my 2nd summer with my pool and I'm about ready to punch my SWCG. It's a Pentair IC40 that came with the build last year. Through the winter, I would get low salt readings on the unit, even though testing with the Taylor drop kit would show good salt levels. So, I attributed it to the water being too cold for a proper reading and too cold for the SWCG to work anyway.
Things seemed to be going better in recent weeks as the water has warmed up, until last weekend. A daily check on the levels showed no FC in my pool. I doused it with a bottle of Clorox and have been trying to figure out what could be wrong now.
Once again, the unit is indicating low salt - 2400 ppm. However, my latest drop test indicates it is on the order of 3400ppm and that makes sense. I read about 3000 a few weeks ago after heavy rains did give me some losses due to the overflow drain.
Water temperature is currently 76 according to the unit, so I don't know what can be wrong with it now. As reported earlier, I did do one "cleaning" on the unit back in January, but found almost no build up in the cell as I've stayed on top of testing and adding acid to keep the pH under control. I've rarely had any scaling issues since I've had the pool.
I recall I had a similar issue a few months ago. I disconnected the unit and reconnected it to try to make it reset. Back then, it worked. However, so far, trying the same thing this time has not helped.
So, any suggestions on what can be giving me a low reading and no production now when the water temperature should be an issue any more? I figured I'd give it another go at cleaning it tonight to make sure that's not causing a problem.