Printer Model: Creality Ender 3 v2 Neo MCU / Printerboard: BTT SKR Mini E3 V3 Host / SBC – Raspberry Pi Model 4b klippy.log (1.6 MB) moonraker.log (115.5 KB)* *I don’t know if this will have much use for you, but I saw other posts attaching it so I decided it would probably be of some use …

Here are the links to resources I mentioned above: frenk.salvi’s issue Cowboy124aa’s issue Reddit post

Hello @stupidcomputer and welcome to the forum! The heating up of the extruder is quite slow. It takes 3 minutes from about 50°C up to 200°C. [grafik] Usually it is below a minute (on my system from 23°C to 215°C in about 30 seconds) Do you run a heater cartridge that the PSU is not able to pro…

I do not believe so, my head is stock. (It was replaced a bit ago, but I never had any issues until I switched the nozzle) Also, thank you for the recommendation; I’ll see what I can do there.

[image] stupidcomputer: until I switched the nozzle Then you may check if the thermistor still seated properly.

[image] EddyMI3D: Then you may check if the thermistor still seated properly. If the thermistor is still properly located check for broken strands in the wires to the heating element. Your heater is defiantly not working correctly. FWIW - A misplaced thermistor is EXACTLY the failure mode [v…

BlockingIOError: Error 11 - Printer refuses to do anything, throwing "verify_heater" error

General Discussion

stupidcomputer April 10, 2026, 1:53am 2

Here are the links to resources I mentioned above:

frenk.salvi’s issue
Cowboy124aa’s issue
Reddit post

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Verify_heater issue General Discussion	7	133	February 25, 2026
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Need help with "verify_heater extruder" General Discussion	31	5781	January 17, 2024
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BlockingIOError: Error 11 - Printer refuses to do anything, throwing "verify_heater" error

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