Salt cell temp sensor error message

With your amazing help in all the previous threads I was able to wire an external temperature sensor to our salt cell after it stopped working 2 months ago. It worked perfectly until a few days ago and is now saying check system, cell sensor open and Chlorinator off sensor fault. Do you have any suggestions as to what I should do. It still appears to be intact with electrical tape wrapped around the wires and has not gotten wet.
 

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Holding the plug vertically with the cord going down and looking at the connection points. 1 is top left, 2 is top right, 3 is second down left and so on with 9 being lower left and 10 being lower right.

  • 1) Black - Power to cell
  • 2) White - Power to cell
  • 3) Black - Power to cell
  • 4) White - Power to cell
  • 5) Brown - Not used
  • 6) Red - Goes to thermistor
  • 7) Orange - Not used
  • 8) Yellow - Not used
  • 9) Green - Not used
  • 10) Blue - Goes to thermistor.
To test the thermistor test between points 6 and 10 using a multimeter, the resistance should follow a 10k thermistor chart.
 
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