If calibration fails, the Scale Display blinks CAL F, and the error code u## scrolls on the 7-segment display (see Scale Fault Codes). Use the error message indicators to correct the problem and restart calibration.
Possible reasons for failure include:
The scale returns to its prior state if Calibration at NO LOAD executes. The Scale Display blinks HOLD for the 30 second time period, and then times out. This condition does not display a calibration failure because the process was unable to find a zero-weight threshold. This may occur if the platter was not re-installed or seated correctly or if the weight on the scale is outside a +/- 2% maximum capacity range (+/- 0.6 lb or +/- 0.3 kg). Incorrect scale installation may also cause this.
The scale returns to its prior state if Calibration at LOAD executes, but the scale was unable to detect a load of 25 lb / 11 kg. This may occur if the correct weights were not placed on the platter before pressing the Scale Zero button. Incorrect scale installation may also cause this.
In either case, there is no impact on the sealed calibration counter or the scale legal parameter counter. However, if calibration fails, the scale is non-operational until the problem is addressed and the scale is successfully calibrated. Re-enter Calibration Mode. The scale does not have to be reset and can be left on before re-entering this mode.
