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

2 Answers

Code 91 beeps even when my salt readings are 3200 PPM

I have tried & taken back 2 NEW chlorinators because code 91 keeps coming up (low salt). I have tested my water which shows 3200 PPM. Has anybody else had this? I keep adding salt in small doses and now my salt readings show 3600 PPM. What now?

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  • David Jan 16, 2013

    Could be low current to the unit - power supply over extention cords and through RCDs etc can cause significant voltage drop and odd behaviour by almost any electrical device.

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***This is how you fix the unfixable code 91***

Code 91 is generated by lack of conductivity between plate 1 & plate 3 of the titanium plate set. This can be caused by 3 possibilities.

1. The salt is low - easily tested
2. The Plates are covered with lime scale - easily cleaned with vinegar
3. The one or both of the connections to the plates are corroded and there is
a break in the circuit

I took a meter to my salt cell ( the tube with the plates in it). The outer 2 plates should have continuity with the plug prongs on their respective sides (where the unit plugs in to the control unit) The middle plate is not connected to either plug.
One of my prongs did not have continuity to the plate (thus the cell generated a code 91 - because there was no voltage to detect.

I took a dremel tool and cut a one inch square out of the back of the housing. I then used a round ball bit in the dremel to remove the plastic around the back of the prong. The back of the plug is conneted to the metal tab that is attached to the titanium plate via a 9/32 post and nut. What happens is that water intrudes from the seam in the front of the prong and corrodes the bolt face and the tab surface creating the break in the circuit. I removed the corrosion and applied dielectric grease (used on headlight bulbs and available at the auto parts store) to the back of the nut and the shaft of the bolt and reinstalled. I tested with the ohms/resistance setting of my multimeter and found the circuit complete.
I then applied a covering of epoxy to the post and bolt and replaced the one inch piece of plastic that I removed and epoxied over the area. I sealed the front of the prongs with epoxy- there is a small area where the metal and plastic meet where the water entered. After reinstallation and hooking the machine up it functions perfectly. Intex is sending me a new unit under warranty-- as soon as it arrives I will seal the front of the prongs with some epoxy and store just in case.

Posted on Jun 14, 2012

  • James Kilbride Jul 05, 2012

    Gill, could you shoot off some pics? Have the same problem, followed your suggestion, want to make sure it looks similar before I button it up....

  • James Kilbride Jul 06, 2012

    Your solution worked perfect. Thanks!

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This may seem silly but make sure the salt you used was not iodized. I had the same problem and didnt realize my mistake

Posted on Jul 02, 2009

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1 Answer

My salt water pump keeps saying low salt. I have had the water checked and there is plenty of salt. I have cleaned the cell and it still says low salt. The pump is on;y 1 year old. I dont know what else to...


I suggest you clean the cell according to manual and try it then. If it keeps producing chlorine then keep swimming. If the pump is flowing water fully (if not clean baskets and filter) and it can't keep the chlorine above 2 ppm and you have 30 to 50 ppm stabilizer in the water then there is a major problem in the chlorinator. I don't trust the salt indicator on some chlorinators but that is less important than if it chlorinates. You can but salt test strips. I hope this helps.

Aug 12, 2011 | Intex Automatic Salt Water System for ...

2 Answers

Once a week I've been adding salt (80 lbs) to my pool and again get low salt code (91)....it has been very unusually hot (HTX 110) is this causing the problem and I need to add more?


1st... Check your salt level consentration.. If okay... 2nd, Check you electrolytic cell, may be plugged with white flaky calcium stuff. The white calcium build-up on the cells will cause a low salt alam.

Jul 21, 2011 | Intex Automatic Salt Water System for ...

2 Answers

What is a code 93?


Code 93 = Good News for You! :-D It is your Saltwater Chlorinator's way of letting you know that it is working properly and your pool's water has a level of salt that is optimal/good.

Code 93 just lets you know it is not actively converting salt to chlorine...it is in 'standby mode.' When you first programmed the number of hours you wanted it to run (by pressing the left (down)arrow until you heard the beep, then pressing the right (up) arrow until you heard the beep - then pressing up until you reached the desired number of hours you wanted the unit to operate (minimum 1 hour, maximum 12 hours)) the unit began converting salt to chlorine immediately.
This is good news for you. Once the number of hours of operation are up, your unit will give you a code when you press either button. If your salt level is too low, you will receive code 91 indicating this, if your salt level is too high, you will receive code 92 indicating this, if the water flow is too low, you will receive code 90 indicating this (this gives you the opportunity to correct this before the next cycle begins. If there is no error with your pool's water, your unit will go into standby and wait until it is time to run the numbers of hours you programmed it for (it will begin it's cycle at the same time each day unless reprogrammed by you). When this happens, you will find code 93.

So, just to recap:
Code 93 = Good
Code 92= Salt level too HIGH (Empty approx. 20% of pools water & refill with fresh water.)
Code 91 = Salt level too LOW (Add salt.)
Code 90 = Low Water Flow (Check your filter. If it is working properly, you may find that it is too small for your pool. The filter that came with my pool was FAR TOO SMALL - I spent more time cleaning the pool than swimming in it. My 18' x 4' pool came with a 1500 filter. Now, I have a 4000 Sand Filter. This + the Saltwater Chlorinator = practically no maintenance. Together, these were approximately a $500 investment. WELL WORTH IT!!!)
Code 88 = Startup mode. (Press down arrow until you hear the beep. Press up arrow until you hear the beep. Press up arrow until you have the unit set to operate the number of hours you desire.)
As an extra FYI: The unit works with the sun. This means the unit turns the salt from your pool into natural chlorine which is then sent back into your pool. The sun turns this natural chlorine into salt. Your filter sends this salt into your saltwater chlorinator where it is again converted into natural chlorine & returned to your pool where then sun...I think you get it. ;-) It's a continuous process. ~This being the case, when you program your saltwater chlorinator, it is best to set it up to help it work with the sun rather than setting it up to compete with the sun. You do this by programming it to run at night. This way, your unit isn't working hard to generate chlorine at the same time the sun is diligently converting the chlorine to salt. I've read several articles where people argue that you should run your saltwater system at night & your filter during the day. I don't understand this concept. My filter runs 24/7 & my saltwater chlorinator runs 12 hours - from 8pm to 8am. Since I set my pool up to operate this way, I have not had to clean it at all other than backwashing the filter every other month just for principle. My water is crystal clear.
One further note of interest: My pool holds approximately 6000 gallons of water. For this, Intex recommends 135 pounds of salt. Because of some advice I'd read posted by other users, I started with only one 40lb bag. This was all my pool needed. Approximately once/year, I add one more 40lb bag.
RJBALLZER777, because you are receiving code 93, I realize you have set your pool up correctly and, therefore, are possibly thinking, "Why is she telling me all of these things I don't need to know?" I apologize if that is what you are thinking. I am really posting for those who have not gotten it just right the first time (or who are doing their research before buying as I did) so that they may get several questions answered at once. Hope you don't mind that I used your question as a means to post. (That's why I answered your question right off the bat.) Hope this post helps some.

Jun 20, 2011 | Intex Automatic Salt Water System for ...

1 Answer

Need code info


code 91 is low salt
do not just guess at it! even the recommended amount in the manual is just that, a starting point
It is up to you to fine tune it

Get a salt test kit that reads in #'s not color
Now get your pool to as close to 3000ppm as possible
under 2700 will cause the system to not produce enough chlorine
any higher than 3500ppm and you can go cloudy, trigger high salt alarm, and even taste terrible
Here is a link to manuals so you can see all other codes
http://www.intexcorp.com.hk/proifv/proifv_dl_client.jsp?source=intexstore

Jul 28, 2010 | Intex Automatic Salt Water System for ...

2 Answers

Hi i have a 18 x 48 above ground intex frame pool with a salt water pump /chlorinator system. i have put the required amount of salt in 75 kg and it has fully desolved. the alarm keep coming up on the pump...


Hello,
the amount of salt that they reccomend in the book is just a starting point
You need to get a salt test kit that reads in #'s not colors
Get your pool to as close to 3000ppm as possible
lower than 2800ppm and you will not produce enough chlorine
any higher than 3500ppm and you can trigger high salt alarm, have bad tasting water, or even get cloudy water
Like you have done, when adding salt , filter only for 6 hours or so to fully disolve

Jul 18, 2010 | Intex Automatic Salt Water System for ...

3 Answers

My intex saltwater system pump is beeping ''91'' meaning ''low salt level''. Do I need to just add salt again?


Yes, and be sure to keep up with your pH as it will want to rise slowly over time when using a salt water chlorine generator.

Dec 06, 2009 | Intex Automatic Salt Water System for ...

3 Answers

My intex saltwater chlorine generator & filter beeping forever!!!


hello our pool chlorinator keeps comming up low salt 91 no matter how much salt we put in this is frustrating why is this happening ,,,please help

Jun 06, 2009 | Intex Automatic Salt Water System for ...

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