Heater extruder fail

General Discussion
1

Basic Information:

Printer Model: Kingroon KP3S 3.0
MCU / Printerboard: Kingroon KP3 V1.3 with GD32F303
Host / SBC BTT7 Pad
klippy.log (699.0 KB)
moonraker.log (117.7 KB)

klippy.log

Describe your issue:

Hi! I recently upgraded from marlin to Klipper via BTT7 Pad. First prints were ok and then I got the forum-known error…

"Klipper has shutdown

Heater extruder not heating at expected rate

See the ‘verify_heater’ section in docs/Config_Reference.md for the parameters that control this check."

Consistently with every print I try, the temperature drops in like 10 degrees when the fan starts and then the print fails. I searched the forums and understood it could be different issues, but I have nowhere near the expertise needed to diagnose the problem myself, so I ask for your kind guidance. I already did PID tuning with & without the fan on.

I enclose the needed logs, thanks for helping me.

2

Most likely, either the heating cartridge or the temperature sensor is defective. It is not entirely clear from the log.
There are several jumps of multiple degrees within one second, which would suggest an issue with the temperature sensor, though I am not certain.

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