Hach-Lange 3798-S sc - Manual (Page 23)

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Section 7 Faults, causes, rectification
7.1 Error messages
Possible sensor errors are displayed by the controller.
7.2 Warnings
Possible warning messages are displayed by the controller.
Table 1: Error messages
Error displayed Cause Rectification
*****
No communication with the
controller Check the connection to the controller
Check the cable to the controller
SENSOR MISSING
FFFFFFFFFFFFF No communication with the
controller Check the connection to the controller
Check the cable to the controller
TEMP TOO LOW Measured temperature < –5 °C
Ensure that the
medium temperature is > –5 °C.
TEMP TOO HIGH
Measured temperature >
+100 °C Ensure that the
medium temperature is < +100 °C.
COND TOO LOW Conductivity < 100 µS /
cm
Ensure that the
conductivity is > 100
µS /
cm
.
COND TOO HIGH Conductivity > 500 mS /
cm
Ensure that the
conductivity is < 500
mS /
cm
.
RES. TOO LOW Resistance < 2
Ω
Please contact service.
RES. TOO HIGH Resistance > 10 k
Ω
Please contact service.
Table 2: Warnings
Error displayed Cause Rectification
CAL TOO OLD
The last calibration was more than
180 days ago.
Calibrate the sensor
HUMIDITY BAG
The desiccant bag is more than
1000 days old.
Please contact service.