UM3 - Error: Negative capacitance without compensation

[MrPla 0]

Before the printer starts the calibration and rising the bed, an error shows up and the print job is cancelled

This error appears as well when going to:

System > Maintenance > Diagnostics > Bed level sensor

 

I have tried to replace it for a new sensor but still the same issue

Fmwr vs: 5.2.1620200331

cap_hUMmy_1970-01-01_00.21.20_X180.0Y155.0_sensor_reset.log

Edited January 7, 2021 by MrPla

[SandervG 1,522]

Hi, I don't think the attached file tells us much. There should be several files. Did you follow these instructions?

[MrPla 0]

Hi,

Find attach the log files
 

UM3 error.zip

[MrPla 0]

Hi,
Any news on the new files?

 

[Torgeir 289]

Hi @MrPla,

 

I'll think that the "capacitive sensor" is not connected to the "sensor electronics".

Check that the two wires red and withe is properly connected to the "capasitive sensor" pins.

 

Here is a picture of the open cover in front of the head:

Here you see the two wires going to the "capacitive sensor", check that the wires is properly attached.

Normally you can see if they are open, sometimes not that easy.

By the way, -it is written a lot about this issue herein.. Use google.

 

Thanks

Torgeir

 

 

[MrPla 0]

Hi there,
Anyone could tell me where to find all firmware releases? The links found in the forum are not working anymore, I would like to try this approach as solution to the problem described above...