Error code changed from 123 to 121 after replacing back board in Aqualink system

wuthrirc

Member
May 16, 2019
24
Wichita Falls, TX
For 2 years I have been trying to get my Jandy Aquapure/Aqualink system to produce chlorine.

Summer of 2022, I got the 123 error code. Local pool company comes out and says I need a new salt cell. Cell was less than 3 years old and Jandy sent a replacement cell and cord. Still got the 123 code. Local pool company came out and got on the phone with Jandy support. Tested amps/current/voltage and couldn't find a problem. Used liquid chlorine the rest of the season.
Summer 2023, I just used liquid chlorine. Tried contacting Jandy support several times by phone, but gave up after being on hold each time for >30 minutes.
2024 - I'm tired of adding chlorine and I'm stubborn (or stupid) enough to think this is fixable. As a last resort, I decided to replace the back board. Now I get error code 121 instead of 123.
Any ideas or advice? There are no signs of corrosion anywhere and the cell looks clean.
 

Attachments

  • Jandy_Salt_Cell.jpg
    Jandy_Salt_Cell.jpg
    321.6 KB · Views: 0
  • Jandy_Service_Light.jpg
    Jandy_Service_Light.jpg
    310.4 KB · Views: 0
  • Error_121_A.jpg
    Error_121_A.jpg
    290.1 KB · Views: 0
What is your salt level and how are you testing it?
 
Update 2 weeks later -- At the end of April, we had a big thunderstorm with lots of lightning. Checked the system the next morning and the display was all garbled. Turned off the power and turned it back on. Been working every since. No service light and plenty of chlorine. I have no idea why--but don't look a gift horse in the mouth!
 

Attachments

  • IMG_8371.jpeg
    IMG_8371.jpeg
    265.7 KB · Views: 1
  • Like
Reactions: HermanTX