The scale cannot establish a proper zero reference before weighing.
Possible Causes
1.) Load remaining on the platform
2.) Platform obstruction
3.) Improper installation
4.) Unstable working surface
Troubleshooting
1.) Remove all loads.
2.) Inspect the weighing platform.
3.) Place the scale on a level surface.
4.) Press the ZERO key.
5.) Restart the scale if necessary.
Prevention
1.) Zero the scale before every weighing operation.
2.) Keep the platform clean.
3.) Avoid vibration during operation.
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