#206 temperature error



hi guyes,
I have a problem with my M300 Plus. The machine show the error #206 temperature error, at first start up it. I replaced the thermocoplue and heater but the error appears still. The firmware installed is 1.4.0. Anyone can suggest me a solution?

Thanks for



Make sure all the cables are firmly plugged into the PCB and if the screws securing the heater&thermocouple in the hotend are tight.

Most of all - update the printer to the newest one (2.2.3). Note - you need to install the firmware in order (via USB): 1.4.0 -> 1.5.0 -> 2.0.0 -> 2.2.3 (you will find 1.5.0 file in 2.0.0 folder).

Once the newest firmware is installed - provide a picture of a new error code, please. We will look further into the matter.

Best regards,


Hi Karolina,
Thanks for your support.
I will do this things.
Best regards,


Hello Andrea,

You are welcome. We will be waiting for an update.

Best regards,