Pentair IC40 Low Salt light Issue

[ChevyCruizer]

I know this is an old thread...but I came across it while searching for a similar problem that I was having. I will be posting a new thread and a link to a walk-through video to help others. In my case the cell was reporting low and/or very low salt (900 ppm) and therefore not generating chlorine (proper operation) but in fact, I had a high salt condition (> 4000 ppm) which was confirmed by multiple tests performed with different methods (strips, test kit, electric wand sensor, and pool store). My flow switch was operating properly as well as the built in thermistor. It turned out that the cell had excessive buildup on the plates and either blocked the flow of water around the two salt sensor "fangs" or somehow altered the reading. After the factory recommended muriatic acid cleaning procedure the cell properly read the salt level and then started producing chlorine.

Hope this helps the next person who comes across this thread, and be on the look out for my video walk-through.

Thanks,

John

 

[mknauss]

SWG How It Works - Further Reading

www.troublefreepool.com

Proper management of your water chemistry will preclude the need to 'clean' a SWCG.
Do not use mineral acid to remove scale form the cell. It removes the rare earth metals from the cell plates and shortens its life.
Use cleaning vinegar if scale gets bad.