How To Recalibrate the Salt Level on a Pentair Intellichlor

Written by:  Danny Rhodehamel

Occasionally the salt indicator on the Pentair Intellichlor will not match the actual salt level of the pool. If this is the case, the salt level on the cell will need to be recalibrated. The following steps will provide a guide on how to recalibrate a Pentair Intellichlor. Note: This guide is only intended for versions 1.9 and below. Newer versions cannnot be recalibrated.

Tips & Warnings

Things You'll Need

Step by Step

Step 1

If the Intellichlor has been in operation for a few weeks, remove and acid clean the salt cell before field recalibrating. This will give the most accurate starting point.

Step 2

Manually test the salt level with salt test strips or an electronic salt tester. If the salt level is in the proper range of 3000-4200, proceed to step 3. If not, adjust salt level to the proper parameters before recalibrating.

Step 3

With the pump running, verify the "Flow" light on the cell is green. This indicates good water flow through the cell.

Step 4

Press and hold the "More" button for 3 seconds to enter system status mode. All the lights will scroll across the panel, and then go dark. Only the "Power", "Cell", "Life", and "Low" lights will be lit.

Step 5

After a few moments, the "Good", "Add", and "Low" salt lights will begin to scroll, indicating the salt level is being read. It may take up to one minute to read the salt.

Step 6

The salt scrolling will stop and one of the salt lights will be displayed. The "Sanitizer Output 20%" light will turn on to indicate changes are now allowed. Press the "More" button to cycle through each salt level, and then press the "Less" button to choose and save the display as the new salt level. The "PWR", "Cell", "Life", and "Flow" lights will flash 4 times, then the mode exits to normal.

Step 7

The unit is now recalibrated to the salt level of the pool. The display will now be normal, showing the output percentage, flow status, etc. The field calibrate mode will exit in 5 seconds if no buttons are pressed.

Comments (1 to 7 of 7)

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User: Inyopools

MARIA - You would expect the free chlorine level to go up after a shock treatment but that shouldn't affect the salt level. Rain should have diluted the pool's salt content bringing the salt level down. If an independent test shows that your salt level is still high, you may want to drain the pool 6" and add fresh water. Or just watch the salt level and see if it doesn't drop naturally to 3500 in 3-4 weeks.


we are residing in the US VI and using the for our 20000 gallon pool since 2/2013 the IntelliChlor Generator.Recently I was not able to bring up the free clorine level. since we had a lot of rain I added acid and Breakout chock, let the pool run more hrs. dayly + in add. 24hr straight as instructed. the result the green flashing light came on. when I had the water tested last week it showed the salt level was 4300. Surprise since I thought the salt creates the clorin? I was told to clean all the equipment, let some water out and add 23 lb SB, next day 1 qt acid; 31lb calcium hardness increaser ; 4lb clorine stabilizer/cyanuric acid, which I did yesterday. tonight I have to add 1 lb extra shock breakout. Meanwhile the pool is running however the cell is disconnected.
Next water test in about 2 days.
Any other advise

User: Inyopools

GeneL - I would take a sample of your pool water into a local pool store to double check the salt level and to make sure all of your pool is chemically balanced. Then if your pool is balanced and the salt is below 4200 ppm, try recalibrating your unit per the instructions in this guide. Note: the newer units "do not require calibration" so cannot be recalibrated. A newer unit can be identified by looking at the label. The yellow LED for "Check Salt" has been replaced with a single line "IDEAL SALT 3400 ppm". From your description, it sounds like you have an older unit. If, after recalibration, you still have the same problem, check your cell to make sure it is free of deposits. A dirty cell can affect salt readings.

User: GeneL

I have an Intellichor IC20, I don't know what the version is but it was installed in January 2013. Question: is there a error range for salt readings as registered by the Green/Green flashing/Yellow/Red lights? For example, if it is flashing Green, could the ACTUAL salt level be, say at 3800 and not the trigger point of 4200 or above? The reason i ask: my indicator is flashing green, but my pool technician, using a new, calibrated, electronic tester, gets a reading of 3900. Thanks !

User: brenro

This might work for the older style cells but not the new ones. For one thing there are only two lights for salt now and once the system does a self check it returns to normal operation without an opportunity to adjust anything.

User: Inyopools

Edahl - Yes, I would unplug the black power line to the cell before cleaning. Here is a link to the Pentair Intellichlor Owner's Manual. Page 27 shows you how to disconnect the line. I'm not sure what you mean by "Wh does 4 green line stay on and sometime 3 green dots". Page 7 of the Owner's Manual starts the explanation of the LED lights. Page 33 starts "Troubleshooting".

User: Edahl

Do you have to unplug black line before cleaning system. Where to unplug. Wh does 4 green line stay on and sometime 3 green dots

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Tips & Warnings

This recalibration guide is intended for Intellichlor versions 1.9 and below. The version number should be listed on the cell near the serial number.

Please Note:

Inyo Pool Products is not responsible for any injury or damaged equipment
while using our guides. Using our guides is doing so at your own risk.
These guides are suggested use of your pool or spa equipment and may vary
depending on which product you are using.