Hach Lange DR 3900 User Manual page 135

Error displayed
Under measuring range
Possible interference by:
Possible interference from:
Next service is due!
Negative result!
Network switched off.
Remote server cannot be reached.
Unstable lighting conditions!
Insufficient memory for update .
System check incorrect!
Temperature too high.
Measurement not possible!
Update file is faulty.
USB memory stick is not connected.
Web server cannot be reached.
Definition
The measured absorbance is below the
calibration range of the test
Interference Check
Interference Check
The service reminder is activated.
The calculated result is negative
Network setup off, when accessing the
Instruments homepage via the sidebar
Error during network setup
Error during update.
Measurement of air values failed
Error during update.
Update not possible.
Instruments homepage cannot be
reached
Troubleshooting
Resolution
If possible, select a test with a lower
reading range or use a cuvette with a
longer path length
The analysis is possibly erroneous due
to interferences.
The analysis is possibly erroneous due
to interferences.
Contact technical support for an
inspection of the instrument. For setting
the service reminder, refer to
section 6.8.7, page 123
Check concentration of sample
Activate the online connection.
Make sure that the instrument is
connected to the network.
Avoid direct sunlight at the measuring
location.
Select a memory with more space.
Switch the instrument off and then back
on again. If the system check is not
successful, contact technical support.
Switch of the instrument and allow it to
cool for a few minutes. If necessary,
move it to a cooler place.
Save the update file again and repeat
the procedure.
Check the USB memory stick.
Try the connection again later.
Make sure that the instrument is
connected to the network.
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