Persisting communication error

What is the problem?

Communication error

The printer is disconnecting in the middle of a print. This mostly happend in the evening yet. After this happens it keeps disconnecting after 1-2 minutes when I reconnect and on the next morning it works normally again.

I get this error:
"There was a communication error while talking to your printer. Please consult the terminal output and octoprint.log for details. Error: Too many consecutive timeouts, printer still connected and alive?"

What did you already try to solve it?

I reflashed the firmware, I added ferrit beads to both ends of the data cable, I put tape on the power line of the Usb-cable and I tried another Usb cable.

Have you tried running in safe mode?


Did running in safe mode solve the problem?


Systeminfo Bundle (39.0 KB)

Additional information about your setup

Octoprint Version 1.7.3
Ender 3v2
Marlin bugfix-JyersUI v2.0.1 firmware
Raspberry pi4, rasbian os lite

Does anyone has an idea what else I could do?


did you search the archives of this forum already? There are countless threads for communication error - ender 3 v2.

There might be a source of electromagnetic fields close to the printer, a fridge or air-con or fluorescand bulb. Some folks found the cable going to the printer's display was responible, etc.
Worth reading a few of those posts and compare with your experiences

Thanks for your answer but I tried a lot of different things. I just bought some ferrit clip on beads and attached them everywhere but I don't know why the printer disconnects everyday arround 6pm ... moving it to another space is not really an option.

Is there something on a timer that turns on around that time? If it is repeatable, there may be an electrical interference issue or something - maybe heating/AC starts up or some other large electrical appliance nearby?

I live in a flat and it stands in a small storage room. I think it might be something from my neighbor that turns on at that time ... Is that possible?

I wouldn't rule that out.
You could test for it by putting the printer several meters away from that spot.

To eliminate EMI caused by the electrical power input, you could try a surge protector plug strip or a UPS. If its airborne EMI, then moving the printer could help.

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