HMS 0300-3500-0001-0001: MC module cooling fan slow or stopped
HMS 0300-3500-0001-0001 means the MC board cooling fan has slowed or stopped. The board it cools is the expensive part, so this is worth fixing quickly.
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 0300-3A00-0001-0001: right side auxiliary fan slow or stopped
HMS 0300-3A00-0001-0001 means the right side auxiliary fan is slow or stopped on a P2S or X2D. What to clear first, and what the replacement fan costs.
HMS 0300-1700-0002-0002: hotend cooling fan running slow
HMS 0300-1700-0002-0002 means the hotend fan is running slow rather than stopped. Cleaning usually clears it, and this is a warning before a real jam.
HMS 0300-1700-0001-0001: hotend cooling fan too slow or stopped
HMS 0300-1700-0001-0001 means the hotend cooling fan has slowed or stopped. This is the fan that stops filament softening above the melt zone, so stop printing.
HMS 0300-0800-0001-0002: Motor-Z short circuit
HMS 0300-0800-0001-0002 means a Z motor is drawing more current than its winding allows. How to confirm the short, and which replacement fits your model.
HMS 0300-0700-0001-0003: abnormal Motor-B resistance
HMS 0300-0700-0001-0003 means Motor-B measures outside its expected resistance. A connector cannot cause this, so the motor is usually the part to replace.
HMS 0700-4500-0002-0003: filament cutter handle has not released
HMS 0700-4500-0002-0003 means the filament cutter handle has not released. A jammed blade or a filament sensor connection. How to free it without damage.
HMS 0700-4500-0002-0002: filament cutter distance too large
HMS 0700-4500-0002-0002 means the filament cutter travelled too far, which points at lost steps in XY. Why a blunt blade causes it, and what to check first.
HMS 0500-0100-0002-0001: the media pipeline is malfunctioning
HMS 0500-0100-0002-0001 is a media pipeline fault, which affects the camera and timelapse rather than printing. What a restart fixes, and what it does not.
HMS 0500-0300-0001-000B: the screen is malfunctioning
HMS 0500-0300-0001-000B means the screen has stopped responding. What a restart clears, what the cable can explain, and what is a warranty job instead.