• Press the Kis or ENTER button for the MONITOR version or the “enter” button for the DISPLAY version to calibrate the distance. • Return the sensor to the rest position. Exit the sensor calibration programme by pressing the “ESCAPE” key.
If the calibration has been performed successfully, an acoustic consent signal is emitted. If the message A 20 is displayed, this indicates that the position of the sensor during the calibration phase is incorrect. Position it correctly, as already described, and repeat the procedure.
If this message remains displayed, check in the service environment, or function 98, the correct reading of the distance, the diameter and the zero-setting in the rest position as reported in the “Service Programmes” paragraph.