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Section 6 Troubleshooting
6.1 Error messages
Possible sensor errors are shown by the controller.
6.2 Warnings
Possible sensor warnings are shown by the controller.
Table 1 Error messages
Error displayed Cause 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
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 the manufacturer's customer service department
ERROR PROBE Error in the probe electronics Call the manufacturer's customer service department
LED FAILURE Faulty LED Call the manufacturer's customer service department
Table 2 Warnings
Warning shown Cause Resolution
REPLACE PROFILE Counter at zero Replace wiper profile, reset counter
TEST/MAINT Counter expired Call the manufacturer's customer service department
GASKET Counter expired Call the manufacturer's customer service department
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