Hach AN-ISE sc, Addendum To The Operator Manual

Page: 18 / 152

18 English
Section 6 Troubleshooting
6.1 Error messages
If the sensor is in an error state, the measurement value for this
sensor will flash on the display and the relay contacts and current
outputs associated with this sensor will be stopped. The errors are
described in
Table 2 .
Table 2 Error messages
Displayed errors Cause Resolution
NH
4
mV is out of range!
1,2
Ammonium mV value exceeds the measurement range
Refer to 6.3.1 Troubleshooting
during operation, Page 21 .
K+ mV is out of range!
1,2
Potassium mV value exceeds the measurement range
NO
3
mV is out of range!
1,3
Nitrate mV value exceeds the measurement range
Cl- mV is out of range!
1,3
Chloride mV value exceeds the measurement range
Reference electrode 1
mV is out of range!
REF1 reference value is out of measuring range
Reference electrode 2
mV is out of range!
ORP electrode mV value is out of measuring range
Temperature is out of
range!
Temperature value exceeds measurement range
No cartridge was found. No sensor cartridge connected
Connect the sensor cartridge;
refer to
section 3.3, page 15 .
Sensor code Sensor code calibration failed
Refer to 6.3.2 Troubleshooting
during calibration, Page 22
Humidity Humidity in the probe Inform service engineer
NH
4
-N concentration is
high.
1,2
Ammonium concentration value exceeds measuring range
Refer to 6.3.1 Troubleshooting
during operation, Page 21 .
NH
4
-N concentration is
low.
1,2
Ammonium concentration value is below measuring range
NO
3
-N concentration is
high.
1,3
Nitrate concentration value exceeds measurement range
NO
3
-N concentration is
low.
1,3
Nitrate concentration value is below measurement range
K+ concentration is high.
1,2
Potassium concentration value exceeds measuring range
K+ concentration is low.
1,2
Potassium concentration value is below measuring range
Cl- concentration is high.
1,3
Chloride concentration value exceeds measuring range
Cl- concentration is low.
1,3
Chloride concentration value below measurement range
1
Applies to AN-ISE sc
2
Applies to AISE sc
3
Applies to NISE sc