IC40 low salt light red

[shiyang100]

Just noticed today the low salt red light is on. PB checked the salt level a week ago saying fine. It has been good entire summer. The water temp is 61F today. Could low water temp trigger the red low salt light?

thanks.

 

[Jimrahbe]

shi,

Yes.. the IC40 uses a temperature sensor to help determine the salt reading. So it may well be the temperature that is causing the low reading. The problem is that the IC40's salt sensor has a range of +/- 500 ppm.

When your PB tested the salt level, what was the reading.. "fine" is not a very accurate test.. If the reading was near the low end, I'd another bag or two of salt and see what happens.

That said, It is getting to that time of year where the cell will shut off, I think about 52 degrees or so. It might make sense to just chlorinate with bleach until time to close and see where you are next spring.

Jim R.

 

[pooldv]

Yep, mine came on today too. I usually turn mine off at 70 and switch to bleach.

 

[peterl1365]

Might also be the temperature sensor. It is embedded in the flow switch, and this can cause low-salt readings.

I had this happen to me about a year ago. Replaced the switch (~80-100 dollars), and all has been well ever since. My IC40 continues to produce chlorine well into the low 60's or even 50's, but I usually deactivate it below 60 since CL is not really needed. However, I don't get a low-salt indication even when the water temp drops into the 50's.

 

[Eyetattoo]

Do you manually turn off your cell or does it just automatically turn off when the temps get too low?

 

[pooldv]

My SWG is wired to a mechanical time clock. When it is time to turn it off I remove the timer dogs and switch it off which cuts all power to the power suppl. I'm thinking about putting in my blank SWG tube this winter that I bought this summer and moving the SWG cell into the shop.