The printer cannot detect AMS during filament loading or printing. The LEDs in all four slots blink red (May blink white lights in the old AMS firmware version).

This issue is usually caused by a communication failure between the AMS and the printer. This document provides a method for using a multimeter to check the resistance across specific …

May 20, 2025 · I didn't know which of my printers was causing the error (I have an X1 Carbon and a P1S too) so I removed all three, upgraded the latest beta and tried to add them back starting …

The issue I have currently that when I have more than one AMS connected to my P1S, the printer will work for exactly one print. Once that print finishes, the P1S loses communication with ALL...

May 9, 2023 · It turned out that the connector cable between the AMS board in the X1C and the mainboard was not fully clicked in. Firmly seating it made the problem disappear.

Jul 14, 2025 · It should also be noted that you need to be running 1.09+ firmware and you need to update before plugging the AMS HT in.

When the signal transmission quality between it and the printer is poor, this error message will pop up. Step 1. Check for loose connectors and re-plug. Step 2. Check for connection cable …

Cannot pull back the filament [under construction] AMS power on failure AMS is not detected by the printer The printer shows that AMS filament ran out AMS first stage feeder troubleshooting …

Jul 24, 2024 · When I picked up my print, I noticed that the AMS lights were flashing red, and BambuStudio tells me that the AMS is not connected. I restarted the printer and …

Oct 30, 2025 · Selecting AMS Lite triggers a firmware update prompt, but the system switches the AMS type to “AMS/AMS 2 Pro/AMS HT” instead. After that firmware switch, the printer no …