Hach-Lange TSS EX1 sc - Manual (Page 25)

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Section 6 Malfunctions, causes, resolution
6.1 Error messages
Possible sensor error messages are displayed by the sc controller.
6.2 Warning messages
Possible sensor warning messages are displayed by the sc controller.
Table 1 Error messages
Error displayed Definition Resolution
MEAS OVERRANGE
Measurement range exceeded,
signals too small, probe can no longer
measure this concentration.
If error occurs more frequently: find another installation
location.
CAL. INSUFF. – Calibration insufficient.
Probe requires another calibration point in a lower
concentration.
CAL. INSUFF. + Calibration insufficient.
Probe requires another calibration point in a higher
concentration.
ZERO POINT
Calibration is
too close to the zero point.
Calibrate again with higher concentration.
CAL REQUIRED No existing calibration Calibrate probe.
EE RSRVD ERR Error in the probe electronics Call customer service department.
ERROR PROBE Error in the probe electronics Call customer service department.
LED FAILURE Faulty LED Call customer service department.
Table 2 Warnings
Warning displayed Definition Resolution
TEST / MAINT Counter at zero Call customer service department.