The display shows "----" when the measured value is below the allowable display range or the scale detects an abnormal negative load.
Possible Causes
1.) Weight removed suddenly after zeroing
2.) Mechanical interference beneath the platform
3.) Incorrect zero adjustment
4.) Scale started with pressure applied to the platform
Troubleshooting
1.) Remove all objects from the weighing platform.
2.) Verify that nothing is touching the underside of the platform.
3.) Press the ZERO key.
4.) Restart the scale.
5.) Perform calibration if the problem continues.
Prevention
1.) Always start the scale with an empty platform.
2.) Avoid pulling upward on the weighing platform.
3.) Keep the platform free from obstructions.
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