Sartorius Entris II Advanced Series Operating Instructions Manual page 45

10.2 Troubleshooting
Fault
The operating display is
blank.
The displayed weight
value changes
constantly.
The weight readout
displayed by the device
is obviously wrong.
For a conformity-
assessed device: The
[Invalid weight value]
display appears.
Cause
The device is disconnected.
The power supply unit is not
connected.
The installation site is unstable.
A foreign object is positioned
between the weighing pan and
the housing.
The device has not been
calibrated and adjusted.
The device was not tared before
weighing.
The cause of this fault is
displayed after pressing the
[No valid weight value] button.
Remedy
Check the connection to the power
supply.
Connect the power supply cable to
the power supply.
Adjust the parameter for the
ambient temperatures.
Change the installation site.
Remove the foreign object.
Calibrate and adjust the device.
Tare the device.
Entris II Advanced Line Operating Instructions
®
Malfunctions
Chapter,
page
7.2, 37
45