# CR-M4 imidiately stops after heating extruder after successful print

**URL:** <https://klipper.discourse.group/t/cr-m4-imidiately-stops-after-heating-extruder-after-successful-print/24270>\
**Category:** General Discussion\
**Created:** [July 17, 2025, 4:12am UTC](https://klipper.discourse.group/t/cr-m4-imidiately-stops-after-heating-extruder-after-successful-print/24270 "2025-07-17T04:12:32Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![magiwogg](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@magiwogg](https://klipper.discourse.group/u/magiwogg)\
**Post date:** [July 17, 2025, 4:12am UTC](https://klipper.discourse.group/t/cr-m4-imidiately-stops-after-heating-extruder-after-successful-print/24270/1 "2025-07-17T04:12:32Z")

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### Basic Information:

Printer Model: Creality CR-M4  
 MCU / Printerboard: STM32F401  
(to run resonance calibration I use linux as board)  
 Host / SBC Creality Sonicpad with Debian  
 klippy.log  
[klippy (2).zip](https://klipper.discourse.group/uploads/short-url/xWusQowseUkQRR4gSPD8Q6EWRxy.zip) (5.1 MB)

 ![Screenshot_4](https://global.discourse-cdn.com/free1/uploads/klipper/original/3X/9/c/9cf91ec14e47e9880400e349dcd96ab3841d8300.png)

My printer immidiately stops after start heating, and only showing mcu error like this.  
does this mean that is it simply a connection error? It did run few prints before this, I made sure that thermistor is connected correctly and there are no loose cables.

I tried to search by my best, including similar model in construction(Ender3 S1) but I could get no better result.

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**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [July 17, 2025, 11:12am UTC](https://klipper.discourse.group/t/cr-m4-imidiately-stops-after-heating-extruder-after-successful-print/24270/2 "2025-07-17T11:12:31Z")

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See [Timeout with MCU / Lost communication with MCU](https://klipper.discourse.group/t/timeout-with-mcu-lost-communication-with-mcu/6639)

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<div class="post-metadata">

**Author:** ![magiwogg](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@magiwogg](https://klipper.discourse.group/u/magiwogg)\
**Post date:** [July 17, 2025, 12:04pm UTC](https://klipper.discourse.group/t/cr-m4-imidiately-stops-after-heating-extruder-after-successful-print/24270/3 "2025-07-17T12:04:08Z")

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okay, I looked into that last time. Thanks for reminding me.  
In the past the issue was USB cable, so I gotta adjust currents in cfg this time.  
or I need better power supply

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [September 15, 2025, 12:04pm UTC](https://klipper.discourse.group/t/cr-m4-imidiately-stops-after-heating-extruder-after-successful-print/24270/4 "2025-09-15T12:04:40Z")

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