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

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New pool and keep getting code 90. intex sent a replacement system and I'm still getting code 90

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Code 90 indicating low flow.

Do you have a good flow from inlet to outlet? You should be shooting a pretty good stream (wave form) across the pool. You can remove the filter from the pump and run it without to see if you eliminate the error. if that works you've got some gummy filters going on that require cleaning or replacing. (daily in my case) If the error persists check the flow sensor on the chorinator. Be sure the direction is correct, the water coming into the chlorinator follows the direction on the electrolytic plate box. (usually there is arrow on this. Other thing is, how loud is the system? Are you hearing lots of air entering the intake of the pump? This can lead to air lock on the pump and little to no flow in the system. If so, bleed the air of using the relief valves at the top of the filter and at the input of the filter. Also listen to ensure that the inlet at the pool is not allowing air to be sucked into the lines. This can be due to a loose connection or bad gasket at the inlet valve of the pool.

Posted on Jun 16, 2010

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I had similar problems - repeatedly getting Code 90 after trying every solution in the manual except replacing the flow sensor. I finally discovered that inside the Plunger Valve there was a black rubber seal where you tighten the value to the pool. It was collapsing inside the valve each time i turned on my pump. I swapped my cut off valves (low to high and high to low) on the pool and it solved my problem! Will be getting replacement rubber line seals for each valve! Hope this helps someone else!

Posted on Apr 30, 2011


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Posted on Jan 02, 2017

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I am at the end of my rope- i keep getting the code 90 on the salt water system. i have put the flow sensor in vinigar for 4 hours, got all the air out of the hose. i have 16 x 48 pool with the 635T pumb...

Seems like you tried everything, we as consumers can do.. May have a bad flow sensor and need to contact Intex.. WITH A RECEIPT!!! If you do not have one...Wal-Mart online has the new 8110 version model on sale for $149.00 with a free $50.00 on line gift card that you can later use on line to purchase a regular $50.00 gift card that will be mailed to you.. I just bought one for a spare and plan to use during my cleaning cycles... Good luck...

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Yes, what is your stabilizer level? It should be between 30 and 50 ppm. If the stabilizer is too low then the sun will cause the chlorine to dissipate faster than the chlorinator can produce it. Some salt chlorinator manufactures recommend 80ppm but that reduces the chlorine efffect. If you can't get the chlorinator working then using a floating tablet chlorinator is a good option to keep the pool open. I hope this helps.

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My intex salt water system alarm goes off and code 90 is flashing and there is little flow. If I take out the type A filter to the pump that came with my Ultra Frame above ground pool, the flow is...

What you need to do is either clean out the filter cartridge or replace it with a new one. If you have a spray nozel for your hose you can clean the cartridge by adjusting the nozel so it is a small but strong stream. Run the stream up and down on the cartridge until all the area has been covered and then install it in the system. If you still have little flow then you should replace the filter cartridge.

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You've gotta keep that annoying filter pretty darn clean to please the saltwater pump. I have to scrub my filters daily for this reason. What pump do you have? Mine is rated for 4000gph but I see Intex even offers support for pumps with as little as 500gph.

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We keep on getting code 90 on the salt water system

in side the hose attached to the system from the pool is a filter, we cleaned ours that fixed it right up. Did not know it was there.
The hose is the one going into the pump system at the base.

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Where can I get a new motor for an Intex pump model 637 or 12R

first off water should not be getting to the armature area. be carefull with how you are taking care of your pump.
secondly a 1500 gallon pump is very weak I would advise at least 2500 or even the intex 4000
the most important part of pool maintenance is circulation.

if you have time check into electric motor rebuilding in your area
but sometimes that is more expensive than buying new

also if you have a valid receipt and the pump is less than 90 days old call intex and they will send out a new one within 24 hours
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