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

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I have added 40# pool salt to our Intex 52" x 24' pool every time Code 91 appears; running 7-12 hour cycles. Now after a month into the 3rd season, Code 91 returns after 120# salt over 3 days. Am leery of putting more in. What is the hysteresis of the 8110 and could the circuit be bad?

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  • Intex Master
  • 8,404 Answers

Can you clean your sells? Give that a try ... dont over salt your pool.

If you still have a question, consult your pool supplier. They are nice people.

Posted on Jun 05, 2010

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3 Answers

I have done everything the manual says, but my saltwater system will not stop blinking error code 91. The salt level is fine, and the cell is clean. Do I need to replace the cell. My pool is now green and...


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..
.0067 X Pool Gallons. I have a 14,000 gallon pool and when I get the 91 code for low salt, I add about 110 lbs of salt. Manual says 93 lbs...let it circulate for 24 hours by running the pump only and then start the chlorination cycle.. Before doing this, you MUST make sure the cell in clean.. If any calcium buildup inside, it can give you a false "Low Salt" alarm.

I hope this helps!!

If this helps, please rate... Thanks

Jul 17, 2011 | Intex Automatic Salt Water System for ...

1 Answer

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...


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

Aug 01, 2010 | Intex Automatic Salt Water System for ...

1 Answer

I have a Intex Pool that is 18 ft by 52 in. I have a Salt water chlorinator unit and I am tryiong to start up my pool. I added 80 kg of salt which is the recommended amount for my pool and then I ran my...


I have a krystal Clear deluxe Satlwater system recently the water went green(lots of rain) I added more salt and have run the pump extra time. It is better but not back to normal. Do I have to shock it and how do I do that? What and how much do I put in for an soft set pool 18 x 48.
thank you

Jun 17, 2010 | Intex Automatic Salt Water System for ...

2 Answers

Code 91


If you have hard water in your location you may want to try cleaning the electrolytic plate. I had the same issue where no matter how much salt was added I had code 91. I shut the water down going through the filter / generator. Pulled the outlet hose off and put on a cap. Pulled copper cell out and filled chamber with vinegar. Put cell back in and let set for 1 hour. Fluhed it out and hooked everything back up. Nop more salt problems. The process is in the book.

Jun 07, 2010 | Intex Automatic Salt Water System for ...

3 Answers

Intex Krystal Clear Saltwater Water Sanitizing System


Code 93 means the system is in Stand By (Operation Finished) mode. It will start the next cycle in 24 hours and run for the number of hours you have set, Codes are: 88 Stand By (Start Up) 00 Zero Operating Hours 01 Min Operating Hour or (1 Hour Remaining) 02 thru 12 Operating Hours remaining 90 Alarm Code (Low Water Flow/No Flow) 91 Low Salt Level 92 High Salt Level 93 Stand By Mode (Operating Process Finished)

May 30, 2010 | Intex Automatic Salt Water System for ...

1 Answer

I have just commissioned my intex pool and added inuitially 20kg of salt (as proposed) then added a further 5kg as the code 91 was beeping. It says in the manual when you have low salt you add 10 kg but...


which size pool do you have. as the smallest pool says it should need 30kg just to get started, also did you let it cycle for 24hrs? please check the instructions again on page 131.

May 21, 2010 | Intex Automatic Salt Water System for ...

1 Answer

The error 91, low salt keeps coming on


What size pool if it is less than 4000gal then add 20lbs salt over 4000 ad 40 pounds.
Let disolve for 24 hours with just your filter running. Check salt ppm
It should be as close to 3500 as possible.
test kits cost about 11 dollars for 10 tests

Sep 18, 2009 | Intex Automatic Salt Water System for ...

2 Answers

Low salt


Same here, been getting the 91 code, 3 times in last 1 1/2 weeks. Added salt. Came on today, so I checked titanium plates and they were half clogged with white stuff. DO NOT ADD SALT just because 91 code is on, which I have done. . You need to check plates and clean if clogged, with hose and some pressure. I used a plastic wire tie to clean, do not use metal item to clean plates, you'll scratch the plates and ruin them. Mine was clogged on 2 plates full length.

Jul 18, 2009 | Intex Automatic Salt Water System for ...

1 Answer

Code 91


91 means Low Salt. I have seen this occur if the salt level is actually too low as well as when the plates have a large amount of white crystals on them. If your plates look clean (I use a pressure washer to clean them), check the salt level using salt test strips you can get at a pool supply store.

Jul 02, 2009 | Intex Automatic Salt Water System for ...

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