Question about Intex Automatic Salt Water System for Above Ground Saltwater Pool

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Constant code 91! after only 1 week my first chlorinator was replaced due to this code. Have been using my replacement for approx 2.5 weeks and got my first code 91 - added 1 bag of high purity pool salt but still got the same alarm. cleaned the electrolytic cell as instructed by manual and still get code 91. am being shipped a replacement cell but wonder if it's unusual to get 2 electrolytic cell failures? i didn't run the filter for 24 hours after adding the salt, could this have caused this recent failur? please advise what i'm doing wrong....Krystal Clear system model CS8110

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Hello,
A few things to do or you will create your own problems.

First and for most you must filter for at least 12 hours after adding salt to distribute the salt completly

You can not just blindly ad salt like you said you added a bag.

Although the manuals have an amount of salt for different size pools it is just a starting point. It is up to you tp fine tune

you must get a salt test kit
the kind that reads #'s not color

Get your salt as close to 3000ppm as possible
any lower than 2700 and you will get a low salt alarm and you will also not be producing enough chlorine
any higher than 3500 and you can go cloudy, trigger high alarm, and the water will taste nasty
you can even trigger low salt with too much salt content
So remember 3000ppm

If you are higher than the 3500 then drain 20% water and fill with fresh
continue this until you get to close to 3000

If low follow directions for low salt either on the test directions or bag of salt

I have had my system for this being the 4th season and have never cleaned the cells

any way, when you get the pool to around 3000 filter only for about 12 hours then turn on your generator

It should work fine

Posted on Aug 02, 2010

Testimonial: "thanks so much for your input-you're quite right about blindly putting in salt. i will do asyou suggest"

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Bummer!!! Looks like you checked both things that would cause the code 91 error for "Low Salt". Here's what I've done to solve my low salt "91 code in the past.. I overshoot by 1/2 bag = 20lbs of the recommended salt add quantity when the code appears. Calculate by using this formula..
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I hope this helps!!

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By my calculations you are about 50 lbs over the requirement. Which code are you getting? I'm guessing code 91. Have you removed and cleaned the electrolytic cell from the chlorinator? I get lots of calcium on mine from hard water from the well requiring a cleaning at least once per week. If you get this working and get a warning that you now have too much salt you'll need to drain off water and re-add to get the salt content correct.

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