A&D AD-4212B-101/102/201/301 User Manual

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22-2 Error Codes 
 
 Display             Error code 
Description 
 
 
 
Weighing unit connection error 
The weighing unit is not connected to the display 
properly. Refer to “2-2 Installing the Balance” to perform 
a proper connection. 
 
 
   (CHECK NO) 
Internal error 
Indicates an internal error as the result of self-check 
function. 
Repair is required. Contact the local A&D dealer. 
EC, E11 
Stability error 
The balance can not stabilize due to an environmental 
problem.  
Refer to “3-2 When Building into a System” to prevent 
vibration, drafts, temperature changes, static electricity 
and magnetic fields, from influencing the balance. 
To return to the weighing mode, press the CAL key. 
EC, E20 
Calibration weight error 
The calibration weight is too heavy. Confirm the 
calibration weight value. 
Press the CAL key to return to the weighing mode. 
EC, E21 
Calibration weight error 
The calibration weight is too light. Confirm the 
calibration weight value. 
Press the CAL key to return to the weighing mode. 
 
 
Overload error 
A sample beyond the balance weighing capacity has 
been placed on the pan.   
Remove the sample from the pan. 
 
Weighing pan Error 
The weight value is too light.   
Confirm that the weighing pan is properly installed and 
calibrate the balance. 
 
Sample mass error 
The balance can not store the sample for the counting 
mode or for the percent mode because it is too light.   
Use a larger sample.