Prusa 3D Printer Error Code MINTEMP: How to Fix It

Q: What causes MINTEMP error on Prusa printers?

MINTEMP errors are typically caused by disconnected thermistor wires, a faulty bed temperature sensor, damaged wiring harnesses, or loose connections in the heated bed assembly.

Q: Can I print with MINTEMP error?

No, the MINTEMP error is a safety feature that prevents printing when bed temperature cannot be monitored. This protects against potential fire hazards and print failures.

Q: How do I test if my bed thermistor is working?

Use a multimeter to measure resistance across the thermistor terminals. At room temperature, it should read approximately 100kΩ. An infinite reading indicates a broken thermistor.

Q: Why does MINTEMP happen during printing?

MINTEMP during printing usually occurs due to wire fatigue from repeated bed movement, loose connections that vibrate apart, or thermal expansion/contraction affecting wire joints.

Abstract

The Prusa MINTEMP error occurs when your 3D printer's bed temperature sensor reads below the minimum safe threshold, typically indicating a disconnected or faulty thermistor. This safety feature prevents damage to your printer and ensures proper operation.