I have a Compu-pool CPSC-24 SWCG. Last night I noticed the Low Salt Light was on. I thought this was odd as I added salt 3 months ago and should not be needing any more. I took a sample in and as I suspected my salt wat at 3500 PPM, which is perfect for this unit.

I did notice that there is a white build-up on the cell that is visible through the Clear blue plastic housing, that is pretty heavy on the head end of the cell where the wire connects.

I stupidly thought that self-cleaning meant self cleaning, and realize that I need to clean my cell, but would this cause the LOW-SALT light to come on, or do I have another problem?