We put in a pool at the end of last summer and have a Hayward Aqua-Rite salt generator. It's been acting up this spring. The panel read out is about 600ppm different (lower) from the water test we get in our local pool store. For ex. the panel says 2100 right now but the store says it is 2700. Sometimes when we add salt it doesn't even register on the panel read out. Someone came out to service it the other day and he said it was fine. He said the panel is not exact. Come on, 600 off? I can see 100 but how can 600 off be "normal". We can't generate chlorine because, to the panel, we are not in the 2700-3400 zone. We cleaned the cell about a month ago and there was no build up at that time. The unit was acting up prior to the cleaning. I contacted Hayward and they gave me the number of the guy who came out.
Anyone have any suggestions? Thanks in advance