Relevant for
The Prusa CORE One/+, CORE One L, and the Original Prusa MK4/S, MK3.9/S are equipped with a loadcell, to detect that the nozzle is close enough to the steel sheet for printing, and to avoid damage that would be caused by the nozzle digging into the steel sheet.
The loadcell sets itself a reference, called tare. In case there is an issue right before the start of this procedure, the printer will show the message: "There was an error requesting the tare for loadcell."
Error name: Loadcell Tare Error
Error code: #31524 (CORE One) #35524 (CORE One L) #26524 (MK4S) #13524 (MK4) #27524 (MK3.9S) #21524 (MK3.9)
Access the right side of the LoveBoard, where the loadcell cable is connected. To remove the side LoveBoard cover:
 |  |
Once accessed, locate the loadcell connector and cable, and check for any loose cable, disconnected cable, or visible damage.
|
|  |
|
|  |
Navigate to LCD Menu -> Control -> Calibrations & Tests -> Loadcell Test to initiate a loadcell test.
During the test, you will be asked to tap the nozzle at a specific time, and a progress bar shown on the screen is filled, depending on the pressure applied to the loadcell. If the bar is not filled or is filled irregularly, please contact our customer support.
 |  |
 |  |
