I have just recently drained and refilled my pool due to high calcium levels and have since noticed an issue with the second LED light on my Ecomatic ESC-24 which was not giving problems before. According to the manual the light indicates either low salt levels, dirty cell,cold water, or a failing cell.
It being the middle of summer I know its not the water temp and I have tested the salt levels and get a 3600 ppm reading from the salt I added and the ESC-24 requires a minimum of 3000. The only other chemical I have added is the water conditioner to keep what little chlorine is in the pool now.
Now the cell maybe dirty but have come to be aware that my particular model is self cleaning with its ability to reverse the polarity and even then I follow the manual's instructions and made an acid/water solution and cleaned them off anyways just to be sure. The only downside is the cells are enclosed in a plastic cover that cannot be removed so it is very difficult to visually see and calcium build up at all on the cells.
So it just leaves the possibility that the cells are dying out. The system is at least 10 years old and from what I can ascertain the cells have never been looked at until now.
The output display gives me a reading of 80-95 for any given polarity and at times seems to run just fine for hours on end and up and out of the blue i go to check and the LED has turned red. So it seems to function when ever it feels like. The terminals are connected on tight, except for the gas censor which does make contact with the bolt but is very easy to slide on or off. But I would not even get an output display if the gas censor was the issue.
Is there a way for myself to check the cells and test whether or not they are failing, aside from the fact I'm getting a red LED indicator? Because it seems to be the only possible reason I'm having this issue to begin with. Perhaps I damaged them when I cleaned them with the acid/water mixture?
If I have to replace the cells so be it but I just want to make sure that's the issue and not drop the money on a new one when it could be something else.
Any thoughts would be helpful