SWG showing "Low Salt" when Variable Pump runs at low speed

[bostonpool]

Hi Folks:

I've got a T-15 AquaRite SWG connected to fly 32000 gallon pool. This is my 8th season with the SGW.

I changed to a variable speed pump over the winter.

My SWG is starting to show its age. It's not showing accurate salt levels when viewing the "live" salt content when generating. My dip stick says I'm at 3500, but SWG reads live salt at about 2800 at full pump speed.

I have a new problem. When the pump speed drops to 1400 RPM for most of the day, the "live" salt content drops as well. Down to 2000. And then it throws the "Low Salt" warning with "Check Cell"light. Both lights flashing.

Any ideas on how to avoid this other than adding more salt that my pool doesn't need or changing the cell?

 

[bostonpool]

I ended up swapping out the old cell for a new one I bought last week. Problem seems to be solved. Interestingly enough, the new cell came with paperwork that showed the proper orientation of the cell when running at low speed....to ensure water was always flooding the cells. (Example have it so the cells are down if operating horizontally, versus cells up...which could mean the cells could run dry or partially dry.)

 

[br1dge]

I had this same problem and fixed it for $320 and 5 minutes.. search amazon for Flow Switch for Hayward Goldline Salt Chlorine Generator System

 

[Mdragger88]

I ended up swapping out the old cell for a new one I bought last week. Problem seems to be solved. Interestingly enough, the new cell came with paperwork that showed the proper orientation of the cell when running at low speed....to ensure water was always flooding the cells. (Example have it so the cells are down if operating horizontally, versus cells up...which could mean the cells could run dry or partially dry.)

Yes at the lower speeds it can certainly matter which way you have the “hump” positioned.
Your old cell obviously still has a little life left in it but you’ll have to baby it if you need to put it back in service. I’d probably keep it just as a backup- but then again I am a pool stuff hoarder lol