The conductivity probe on my 2016 Apex has suddenly started reading "0" despite being in the sump. The only thing that has changed is that it was calibrated within the last week. Prior to reading "0" it appeared to be working fine. Is this thing shot or would a simple re-calibration be in order? What is the expected life of this probe? I know pH probes do eventually go bad and just need to be replaced.
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