WRN-97 Cold junction not available
Cause: An external sensor is set as the source of the cold junction temperature but is not being reported. The device continues to calculate with its internal reference.
Measure: Check the sensor and the line in the tool cable, or switch back to the internal cold junction in the device settings, see
Section 9.2.9, “Controller #”. While the warning stands, the temperature displayed can be off by the difference between the two references.