I got the replacement board that I bought and I installed it, the system exhibits the same. I'm beginning to think that while I don't actually have "low salt" per se, it's just how their system is and I need to add a little more salt. I am waiting for some calibration solution for my Hayward Salt Meter. When dealing with Hayward and low salt readings, they do not accept any other test of the salt other then from their digital salt meter, at least that is what I was told last year when I had the authorized tech at my site. The last reading I had from that salt meter read about ~2500 which is maybe why the system would read low salt as well if its within 2000-2500 and the "acceptable" range is ~500 ?
I also heard back from the place of original purchase who said their Hayward parts "...are brand new units we get right from hayward and never installed." and their Hayward rep told them I need to go directly through an authorized warranty center to have the board looked at/replaced. Problem with this is that my local authorized warranty center is an HVAC/Electric shop and knows nothing about the pool stuff other then calling Hayward when they are onsite so they can tell them what to do.
So I would expect the same as last year when I called about the Cell having no serial # sticker. They come and test with the Hayward salt meter and tell me its out of the acceptable range and to add more salt.