HMS 0300-9300-0001-0005: chamber sensor at the heater air inlet
HMS 0300-9300-0001-0005 points at the chamber temperature sensor on the air inlet side. Why inlet and outlet sensors fail differently, and how to test it.
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 0300-9000-0001-0004: chamber heating failed, heating fan too slow
HMS 0300-9000-0001-0004 means chamber heating failed because the heating fan is too slow. Without airflow the element cooks while the chamber stays cold.
HMS 0300-9100-0001-0007: chamber heater 1 sensor open circuit
HMS 0300-9100-0001-0007 means the chamber heater 1 sensor reads as open. Where that sensor sits, what it should measure, and what replacing it involves.
HMS 0300-2500-0001-0005: Z axis motor rotation obstructed
HMS 0300-2500-0001-0005 means the Z axis motor is obstructed. What gets into the Z path, and how to tell an obstruction from a motor that is truly failing.
HMS 0300-2500-0001-000A: nozzle offset calibration failed, filament on the nozzle
HMS 0300-2500-0001-000A means offset calibration failed because filament is stuck to a nozzle. How to clean it warm, and why cold cleaning tears the sock.
HMS 0300-1E00-0001-0003: left nozzle heater over temperature
HMS 0300-1E00-0001-0003 means the left nozzle ran over temperature. What makes a hotend overshoot, and why a missing silicone sock is the common cause.
HMS 0300-1E00-0001-0002: left nozzle heater open circuit
HMS 0300-1E00-0001-0002 means the left nozzle heater reads as disconnected. The connector comes before the cartridge, and how to tell the two of them apart.
HMS 0300-1E00-0001-0001: left nozzle heater short circuit
HMS 0300-1E00-0001-0001 means the left nozzle heater is drawing too much current. How to measure the cartridge, and which hotend assembly replaces it.
HMS 0300-0D00-0001-0003: the build plate may not be properly placed
HMS 0300-0D00-0001-0003 means the build plate may not be seated. How to refit it square, and what to check when that message keeps coming back at you.
HMS 0300-0D00-0001-0002: heatbed homing failed from vibration
HMS 0300-0D00-0001-0002 means bed homing failed because of vibration. What the printer is standing on matters more than anything inside the machine here.