Strange. When I adjust my VS below 1500 RPM, my T-Cell 15 PPM reading drops down from 3200 to 2600 (triggering the low salt light). When I ramp the RPM back up above 1500, the PPM output returns to 3200 ppm and all is good.
Have verified pools salt levels and switched out my 6 yr old T-15 with a new one. Both act the same at the lower RPM.
Could this be a Flow Switch issue? (noting that I am not getting any low flow/no flow indicator). I would think that if its not signaling low or no flow, that the issue lies elsewhere.
I'm running the cell via my 10 year ago old AquaLogic PS-4. Could this be due to the main board's older software version (i.e., its an older version...not the latest version 2.60 or 2.65)? Or the infamous blown or bad resister on the back of the main board?
Would be nice to be able to run it at around 1100 rpm vice 1500 (a savings of around $4.00 oer month).