Troubleshooting – Hach-Lange DR 3900 User Manual User Manual
Page 135
135
Troubleshooting
Under measuring range
The measured absorbance is below the
calibration range of the test
If possible, select a test with a lower
reading range or use a cuvette with a
longer path length
Possible interference by:
Interference Check
The analysis is possibly erroneous due
to interferences.
Possible interference from:
Interference Check
The analysis is possibly erroneous due
to interferences.
Next service is due!
The service reminder is activated.
Contact technical support for an
inspection of the instrument. For setting
the service reminder, refer to
Negative result!
The calculated result is negative
Check concentration of sample
Network switched off.
Network setup off, when accessing the
Instruments homepage via the sidebar
Activate the online connection.
Remote server cannot be reached.
Error during network setup
Make sure that the instrument is
connected to the network.
Unstable lighting conditions!
Avoid direct sunlight at the measuring
location.
Insufficient memory for update .
Error during update.
Select a memory with more space.
System check incorrect!
Measurement of air values failed
Switch the instrument off and then back
on again. If the system check is not
successful, contact technical support.
Temperature too high.
Measurement not possible!
Switch of the instrument and allow it to
cool for a few minutes. If necessary,
move it to a cooler place.
Update file is faulty.
Error during update.
Save the update file again and repeat
the procedure.
USB memory stick is not connected.
Update not possible.
Check the USB memory stick.
Web server cannot be reached.
Instruments homepage cannot be
reached
Try the connection again later.
Make sure that the instrument is
connected to the network.
Error displayed
Definition
Resolution