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Hotend mintemp error #23208 (MK3.5)

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Relevante para :
Ultima actualización 5 months ago
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ENCSPLDEITFR

What happened?

The printer is showing the message "Check the print head thermistor wiring for possible damage."

Error name: Hotend mintemp error

Error code: #23208 (MK3.5)

This error is shown when the printer's nozzle temperature drops below 5 ºC at any point. If this happens during a print, the print will be stopped.

How to fix it?

  1. Make sure that the ambient temperature where the printer is stable, and above 10 ºC.
  2. Make sure that your hotend assembly is correct, especially if there have been recent interventions or maintenance. 
  3. Visually check the thermistor if it is still securely and correctly installed in the heater block. The whole cartridge should be inside the block, with no part of it sticking out.
  4. Make sure the thermistor and heater are properly plugged into the electronics board. Refer to Step 18 from the linked guide to verify the connections. 
  5. Check if the fuses are not blown.

If the issue persists, the error likely stemmed from an issue with the hotend thermistor or, more rarely, hotend heater. To find out which one of these two is malfunctioning, perform the test described below.

You can also verify if the thermistor or heater is damaged using a multimeter.

Use a hairdryer to blow hot air towards the hotend. In the meantime, check if there is any temperature change on the LCD screen.

  • If there is a positive temperature change it means that the hotend thermistor is working and detecting the temperature change. Most likely, the issue stems from the hotend heater. 
  • If there is no change at all, most likely the hotend thermistor is causing the issue, or at least contributing to it.  

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