Hello, I have a problem with my ender 3 S1, when the hotend heats up it says me this on the screen, could you help me solve this, please and thank you.
Likely either a broken thermistor or bad PID tuning. What temperature does it read before the error occurs? What does it read at room temperature?
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The ambient temperature marks it as 20 °C, and this happened after printing some parts in PETG between 250-235 °C. When it was about to reach 250°C the heat dissipation fan stopped and the temperature marked was -15°C. Then the screen showed me what is in the image above
My red wires are loose near the nozzle, sometimes they pop out and this happens
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It sounds very much like your thermistor burned out when it hit the 250C range and won’t register proper temps now.
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