HMS 0300-1C00-0001-0001: extrusion motor driver abnormal, possible MOSFET short
Affected machines: A2L, H2, P2S, X1 series. A MOSFET is the switching transistor that feeds current to one phase of the motor.…
Category: Error codes
Machine error codes explained: Bambu HMS codes, MINTEMP and MAXTEMP, thermal runaway, homing and probe failures. What the code means, and what to check first.
HMS 0300-2000-0001-0004: Y axis homing failed, timing belt loose
Affected machines: A2L, P2S, X1 series. Homing is the machine establishing where the axis actually is, so a homing failure stops everything…
HMS 0300-2000-0001-0002: Y axis homing failed, toolhead stuck or high resistance
Affected machines: A2L, P2S, X1 series. Homing is the machine establishing where the axis actually is, so a homing failure stops everything…
HMS 0300-1800-0001-0008: nozzle abnormally touching the heatbed
Affected machines: A2L, H2S, P2S. The check exists to stop the nozzle digging into the plate, which is a far more expensive…
HMS 0300-1800-0001-0006: heatbed levelling data abnormal
Affected machines: A2L, H2, P2S. The machine probes the bed at a grid of points and builds a compensation map. This code…
HMS 0300-1800-0001-0005: Z axis motor stuck during movement
Affected machines: A1, A2L, P2S. The firmware detects that the axis did not move as commanded and stops rather than forcing it,…
HMS 0300-1800-0001-0003: extruder eddy current sensor not responding
Affected machines: A1 Mini, A2L, H2, H2S, P2S. Two of the three steps cost nothing. A full power cycle clears transient communication…
HMS 0300-1800-0001-0004: extrusion force sensor signal abnormal
Affected machines: A1 Mini, A2L, H2S, P2S. A blocked path pushes the sensor reading outside any sane range, which the firmware reports…
HMS 0300-1000-0002-0002: X axis resonance differs from last calibration
Affected machines: H2D, P2S, X1 series. The machine measures how the X axis rings before printing so that input shaping can cancel…
HMS 0300-0900-0001-0003: extruder servo motor resistance abnormal
Affected machines: A2L, H2, H2S, P2S, X1 series. The extruder motor is the small stepper on the toolhead that drives the filament…