¶ Error message
HMS_0300_0200_0001_0003 The nozzle temperature is abnormal, the heater is over temperature.
" The nozzle temperature is abnormal; the heater is over temperature. "
¶ What it is
Nozzle temperature control mainly includes a heater and an NTC sensor. The TH board will detect the output ratio of the heater and the temperature of the NTC, if the heater has full power output but the temperature does not reach the target value for a period of time, TH will report the heater over temperature.
Below are the possible reasons that this HMS error occurs:
- The silicone sleeve is broken
- The heater or NTC is not installed properly or is faulty
- The connectors of the heater or NTC are in poor contact
- The TH board is faulty
¶ Safety Warning
IMPORTANT!
The nozzle temperature is very high; please avoid touching the nozzle.
It's crucial to power off the printer before performing any maintenance work on the printer and its electronics, including tool head wires, because leaving the printer on while conducting such tasks can cause a short circuit, which can lead to additional electronic damage and safety hazards.
When you perform maintenane or troubleshooting on the printer, you may be required to disassemble some parts, including the hotend. This process can expose wires and electrical components that could potentially short circuit if they come into contact with each other or with other metal or electronic components while the printer is still on. This can damage the electronics of the printer and cause further damage.
Therefore, it's essential to switch off the printer and disconnect it from the power source before doing any maintenance work. This will prevent any short circuits or damage to the printer's electronics. By doing so, you can avoid potential damage to the printer's electronic components and ensure that the maintenance work is performed safely and effectively.
If you have any concerns or questions about following this guide, open a new ticket in our Support Page and we will do our best to respond promptly and provide you with the assistance you need.
¶ Troubleshooting guide
¶ Step 1
Check if the hotend silicone sleeve is properly installed; the normal silicone sleeve installation is as follows, if it's broken, please refer to this wiki to replace it.
¶ step 2
Please refer to this wiki to disassemble the hotend and check if the heater and NTC sensor are installed properly.
If the heater and NTC are connected properly, but the temperature is abnormal, you can try replacing the heater and NTC(or a whole hot-end assembly).
If the problem is solved after replacing the hot end assembly, you can check the original hot end assembly to see if it is a heater failure or NTC failure.
¶ step 3
If the problem persists, replug the 10Pin connector(sometimes it needs to be replugged several times); also check for any signs of burnout on the 10-pin plug. You need to remove the silicone with tweezers before replugging it. Then try again.
If your X1 series printer has a V9 TH board, please replug both ends of this FPC.(Because the BTB socket is small, the installation of the FPC is a bit tricky. It is recommended that you only plug and unplug one end at a time and do not press too hard.)
Replacing the toolhead TH board assembly （V8）| Bambu Lab Wiki
Replace the toolhead boards (V9) | Bambu Lab Wiki
If your printer model is P1P, please replug both ends of this FPC.
PCBs on the toolhead of P1P | Bambu Lab Wiki
¶ step 4
If you cannot solve the problem by the above steps, it is likely that the TH board is faulty, so please contact the after-sales team for replacement.