HMS 0300-1100-0002-0001: Y axis resonance low, belt loose
HMS 0300-1100-0002-0001 says the Y axis resonance has fallen, which means a slack belt. How to judge tension by hand, and when the belt needs replacing.
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 0300-0100-0001-000A: heatbed control abnormal, AC board suspect
HMS 0300-0100-0001-000A points at the bed heater control, and often the AC board. What you can test at home, and what is a service job rather than a repair.
HMS 0300-0800-0001-0003: abnormal Motor-Z resistance
HMS 0300-0800-0001-0003 means the Z motor resistance is wrong, which points at the motor rather than the wiring. How to measure it, and which part to order.
HMS 0300-0800-0001-0001: Motor-Z open circuit
HMS 0300-0800-0001-0001 means a Z motor reads as disconnected, so the bed will not move at all. How to find which motor it is, and what a replacement costs.
HMS 0300-0700-0001-0002: Motor-B short circuit
HMS 0300-0700-0001-0002 means Motor-B is drawing more current than its winding allows. Unlike the open-circuit code, this one usually is the motor itself.
HMS 0300-0700-0001-0001: Motor-B open circuit
HMS 0300-0700-0001-0001 means Motor-B reads as disconnected. Usually the connector rather than the motor. How to prove which, and what a replacement costs.
HMS 0700-4000-0002-0004: filament buffer signal abnormal
Affected machines: H2, P2S, X1 series. The buffer sits between the filament unit and the toolhead and absorbs the difference between how…
HMS 0700-7000-0002-0003: failed to extrude filament
Affected machines: P2S, X1 series, X2D. The firmware commands a length of filament and the sensors tell it none moved, or none…
HMS 0300-A100-0001-0001: chamber temperature too high
Affected machines: A2L, H2, P2S. This is a protective limit rather than a component failure, and the immediate action is the same…
HMS 0300-9300-0001-0002: chamber heater temperature sensor open circuit
Affected machines: H2, X1 series, X2D. An open circuit is the opposite failure to a short: instead of reading near zero, the…