Check System Light On--Inaccurate Salt Reading ProLogic Aqua Plus

[diaznrd]

Salt reading was 2600 ppm. I added 80 lbs (18,000 gal) System now reads low salt with Check System light on. Chlorinator System Off--check salt level.
T-Cell 15 that's 3.5 years old. Pinch a Penny water analysis reads 3700 ppm and good chlorine level. Chlorine levels read different when the polarity is changed. One reads 1700ppm (+27.36V +4.37A) and the other reads 400ppm (-28.80V -1.92A). Did I ruin my T-Cell or board by adding the salt with the system running? I didn't know that could cause damage. I've always added salt with the system running normally. Or has the T-Cell reached it's end?

Thanks

 

[mas985]

Welcome to the forum!

Have you inspected the cell to see if there is scale and needs to be cleaned?

If the cell is clean, then it is likely failing. You can have it tested at most pools stores.

 

[diaznrd]

Welcome to the forum!

Have you inspected the cell to see if there is scale and needs to be cleaned?

If the cell is clean, then it is likely failing. You can have it tested at most pools stores.

I cleaned the cell today. No build up.

 

[JamesW]

What are the first seven characters of the cell serial number?

 

[diaznrd]

What are the first seven characters of the cell serial number?

3E18247

 

[JamesW]

Looks like a bad cell.

 

[diaznrd]

Confirmed....Bad cell. Does anyone have any experience with the Blue Works cell?