52 Cubis
®
 MCE Operating Instructions
 Malfunctions
10.3  Troubleshooting
Fault Cause Remedy Chapter, page
The operating display 
is blank.
The device is disconnected. Check the connection to the power 
supply.
6.3, 27
The AC adapter is not connected. Connect the power supply cable to 
the power supply.
6.3, 27
The displayed weight 
value changes 
constantly.
The installation site is unstable. Adjust the parameter for the ambient 
conditions.
Change the installation site. 5.2, 23
A foreign object is positioned between the 
weighing pan and the housing.
Remove the foreign object.
The weight readout 
displayed by the device 
is obviously wrong.
The device was not calibrated. Calibrate the device.
The device was not tared before weighing. Tare the device.
The [Leveling] display 
flashes.
The device must be leveled. Level the device. 8.2, 39
For a conformity-
assessed device: The 
[Invalid weight value] 
display appears.
The cause of this fault is displayed after 
pressing the [Change] key. At the same time, 
the “Toggle between weight units” function is 
locked.
 − LEVEL.ERR.: The device must be leveled. Level the device. 8.2, 39
 − ISOCAL.ER.: The device must be calibrated. Calibrate the device.
 − WARMUP.xx.: The device is in the warm-up 
phase and has not yet reached its 
operating temperature. 
xx = remaining time in minutes
Comply with the warm-up time after 
switching the device on.
5.2, 23
 − VALUE.ERR.: The displayed value is invalid. Set the device to zero.