HMS Error Code Reference (Overview)

Like every current Bambu printer, the A1 mini shows HMS messages with a code, a description and a link to the Bambu Lab Wiki.

Most messages you will meet are the same as on the A1 — filament runout, AMS lite feeding, nozzle temperature after a hotend swap, and homing failures caused by a dirty nozzle. See the A1 HMS overview for the table of causes and fixes.

A1 mini specific: a Z-axis or homing error right after moving the printer often means the arm was knocked. Power off, check that nothing blocks the arm's travel, and run the calibration again.