Why does my X2D make a 1 kHz Tone for 2 Minutes?

Bambu Lab X Series Bambu Lab X2D
1

When I start a PAHT-CF print from my AMS-HT the printer emits a laoud 1 kHz tone for about 2 minutes when starting the job.

No messages or errors when this happens.

2

Do you have the printer plugged into a UPS? If so, could it be the overload alarm on the UPS?

There is usually a higher power draw at first because the bed is being heated. Then after that initial heating the power usage drops. Not sure about the X2D, but it may have a “low power” mode like the other newer printers (heats up the bed more slowly). More info about UPS usage in general and the startup surge issue in this thread: 3D Printer + UPS = Magic & UPS model recommendations list

-Max

3

Yes, I’ll try running from the wall socket. Thanks!