A&D A & D Analytical Balance GH-120/GH-200/GH-300/GH-202/GH-252 - Manual (Page 72)

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16. Maintenance
16.1. Treatment of the Balance
Clean the balance with a lint free cloth that is moistened with warm water and a mild
detergent.
Do not use organic solvents to clean the balance.
Do not disassemble the balance. Contact the local A&D dealer if the balance needs
service or repair.
Use the original packing material for transportation.
Consider "3. Precautions" when operation the balance.
16.2.
Error Codes
Display Error code Description
EC,E11
Stability error
The balance can not stabilize due to an environmental
problem. Check around the pan. Prevent vibration, drafts,
temperature changes, static electricity and magnetic fields,
from influencing the balance.
To return to the weighing mode, press the
1 CAL 1 key.
EC,E16
Internal mass error
Applying the internal mass does not yield a change in the
mass value as specified.
Confirm that there is nothing on the pan and perform the
weighing operation from the beginning again.
EC,E17
Internal mass error
The internal mass application mechanism does not function
properly. Perform the weighing operation from the beginning
again.
EC,E20
Calibration weight error
The calibration weight is too heavy. Confirm the calibration
mass value. Press the
1 CAL 1 key to return to the weighing
mode.
EC,E21
Calibration weight error
The calibration weight is too light. Confirm the calibration
mass value. Press the
1 CAL 1 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 mass value is too light.
Confirm that the weighing pan is properly installed and
calibrate the balance.