Sending "M420 S1" gives an error... sometimes. Creality please help!

[spauliszyn]

I have been having problems with the auto-leveling turning off. It seems like the bed becomes too close to the extruder and the first few layers are not deposited. the initial wipe/purge pass on the left has now left a permanent streak on the glass plate. It works when I tweak the z-setting 'up' in the leveling menu.

I thought that the printer might be forgetting to use the leveling data so I started to send "M420 S1" as part of my gcode startup script in CURA printer setup.

But now I am getting a total shutdown of the printer and an error in OctoPrint "Your printer's firmware reported an error. Due to that OctoPrint will disconnect. Reported error: Failed to enable Bed Leveling". The printer LCD does not report an error but when I try to "autolevel" the screen hangs up at the grid display and nothing happens.

When I restart the printer and send "M420 V1" in the terminal I get:
echo:Invalid mesh.
echo:Bed Leveling OFF
echo:Fade Height OFF

What is happening? How can I or you fix this?

[cyberfunk]

@spauliszyn : Did you ever figure out if you need M420 S1 or not in Cura ? I've got the same question.. and it sadly doesn't seem to have been answered anywhere on the forum clearly.

[spauliszyn]

As an update @admin, I reloaded the firmware like you suggested. Then I leveled the bed and started a new print. It turned out ok. Then I started a new print without changing any settings. The print started with the nozzle touching the plate. Here is a picture and I will explain more below.

It was during the stage of printing brims. When I caught the problem I started adjusting the z setting manually. I increased it from 0.20 to 0.50 at this stage. Then you can the last three brims being printed ok and then I finally canceled the print while it was printing the first layer on the first rectangular part.

I also sentan M420 V1 and the printer reported that the ABL mesh was ok.

[admin]

Dear @spauliszyn

I have sent your information to our after-sales team, and they don't suggest your refresh other company firmware, and they suggest you refresh the firmware on our website: https://www.creality.com/download

If it not work, I would recommend you send the email to cs@creality.com for more suggestions. Thanks for your support.

[spauliszyn]

As an update, even now after an ABL, i have to bump up the Z adjustment in order to get any extrusion on the first layer. I am currently at 0.40.