Salt too high AND too low?

sjf1414

Member
Jul 22, 2023
7
Houston, TX
Having trouble getting my chlorinator to work. I've replaced the flow switch, both temperature sensors and the salt cell (T-15). Getting contradictory error messages..."Chorinator Off: High Salt/Amps"..."Check System: Low Salt". Salt level in the pool reads as 4000ppm with my portable salt sensor and similar with salt strips. Diagnostic on the controller says 1700ppm (+40.43V, 10.05A). I think the controller is an AquaPlus. Main Software Revision 4.45. Display Software Revision 3.12. Installed in 2014. Any help on troubleshooting appreciated. (Will be diluting the pool in the mean time).
 

 
Thanks for the suggestion. I didn't see anything that looks like a burnt or loose solder joint. I also did the polarity switch and I'm getting the exact same readings as I did before I diluted the salt level in the pool. Any other suggestions would be appreciated

Assuming the board is bad, is replacement something a novice could handle? Looks like the board SN is G1-015043H. I assume I could just match the connections to the new board but don't know if there are any tricks of the trade or hidden pitfalls.
 
Here's the first set
 

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