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Originally Posted by Pondboy

From google ;

How do you know if a salt water cell is bad?

If the salt cell does not bubble, then you either have no power to the cell or you have a bad cell. Further troubleshooting will be required. If the salt cell bubbles, but only a little bit, then you probably have a bad cell.

Why is my salt cell not making chlorine?
Water flow

The saltwater chlorinator needs a sufficient flow of water for effective operation. A dirty skimmer basket, clogged or dirty filter, and a clogged pump strainer, can cause insufficient water flow for the chlorinator to produce less chlorine.

I’d recommend “googling” your type of Salt Cell to see what to look for to confirm it’s working.

You need to remove the salt cell in order to test it. See my post above