How to calibrate the temperature on your iAqualink Unit


This was not obvious to me at all so I thought I would share it.

If you are finding your iAqualink unit is showing a temperature that is within 4 degrees higher or lower than your pool water actually is, you can go to Menu > System Setup > Temp Calibrate and get to a screen that looks like this one below.

Temperature Calibration Screen for iAqualink


I do not have a Spa so only the Pool is showing a valid temperature. The issue here is there is no obvious way to actually adjust the temperature and APPLY the change.

What you want to do is, with the pump running so the temperature is registering:

  • Click on the “Pool” button
  • Adjust the temperature using the arrow keys
  • Click the “Back” button until you reach the home screen again.

In about 15-20 seconds you should see the “Pool Temp” reading on the home screen adjust to the newly calibrated temperature.

This is completely counterintuitive since, to me, the “Back” button is equivalent to a “Cancel” key. “Take me out of here without changing anything”. It took over two months of going back and forth with Zodiac before I finally got a helpful person on their customer service line who could say something other than “You need to contact an authorized service company before we can do anything”.

5 thoughts on “How to calibrate the temperature on your iAqualink Unit”

  1. Oh for Petes Sake!!! That is ridiculous! I went insane trying to calibrate the temp online and finally gave up. Ran across your wonderful instructions when trying a year later. How hard would it be to add an APPLY or ENTER button?!

    Thank you so much Marc for taking the time to write this for the avg person that couldn’t possibly figure this out!

  2. This was most helpful Marc. Do you by chance know if there is a way to also adjust the “air temp” reading. That is the one that reads 107 when it’s actually no more than 92 degrees outside. I think it reads the temp in the sun rather than the actual air temp.

  3. @John – I have a separate sensor hanging off my Jandy unit for air temperature. My unit is located in a shaded, protected area and the sensor just hangs freely. For me the temperature tracks well only showing a bit hot in the middle of the day when there is no breeze to circulate the air in that area. So there *is* hope.

    If you don’t see the sensor (it kind of looks like the top of an otoscope (that thing doctors use to peek into your ears), then I’ll bet it is tucked inside the Jandy enclosure and that the sun is beating down on the enclosure. Maybe pull it out and have it under the unit if it’s reading so high?

  4. @Jim – Just realized I didn’t actually answer your question… I don’t know any way to adjust the air temperature calibration. If you’re certain the sensor is in a reasonable location I’d contact zodiac and have them do it. You may even get someone helpful and they’ll just do it without insisting on you getting a person to come over.

Leave a Reply

Your email address will not be published. Required fields are marked *