Salt cell codeI

Every time my Jandy salt cell reaches 4.0 I get the following codes 125/194. When it stays below 4.0 I don’t get any codes. Is the high limit number of 4.0 that it sets off these codes? I manually read the salt levels and it seems to be about 20-30 digits off between the readout on the digital readout compared to my hand held meter. Is there anyway to calibrate the salt cell readout?
 
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