Issues heating bed from cold to 105 C on AnyCubic Mega X

What is the problem?

Hi there,

Thank you in advance for your help.

I’m having issues heating my bed from a cold start to 105 C. I print in ASA and ABS and need a hot bed.

I run Marlin 2.1.2.1 on an AnyCubic Mega X.

I get this error:

State: Offline after error
Heating failed, system stopped! Heater_ID: bed - echo:busy: processing

What did you already try to solve it?

I have tried:

  • Booting in safe mode and still get the error.
  • Changing the parameter as instructed here.
  • Removing the SD card (read it on a forum).

Have you tried running in safe mode?

Yes

Did running in safe mode solve the problem?

No

Systeminfo Bundle

You can download this in OctoPrint's System Information dialog ... no bundle, no support!)

Yes, provided.

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

Please see attached log file.

See M115 here

FIRMWARE_NAME:Marlin 2.1.2.1 (knutwurst, Github) (Jul 6 2023 16:35:09) SOURCE_CODE_URL:github.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S PROTOCOL_VERSION:1.0 MACHINE_TYPE:Knutwurst's Anycubic Printer EXTRUDER_COUNT:1 UUID:b6153152-86fb-4cd8-bda7-91c6a04c467d

Recv: Cap:SERIAL_XON_XOFF:0

Recv: Cap:BINARY_FILE_TRANSFER:0

Recv: Cap:EEPROM:1

Recv: Cap:VOLUMETRIC:1

Recv: Cap:AUTOREPORT_POS:0

Recv: Cap:AUTOREPORT_TEMP:1

Recv: Cap:PROGRESS:0

Recv: Cap:PRINT_JOB:1

Recv: Cap:AUTOLEVEL:0

Recv: Cap:RUNOUT:1

Recv: Cap:Z_PROBE:0

Recv: Cap:LEVELING_DATA:1

Recv: Cap:BUILD_PERCENT:1

Recv: Cap:SOFTWARE_POWER:0

Recv: Cap:TOGGLE_LIGHTS:0

Recv: Cap:CASE_LIGHT_BRIGHTNESS:0

Recv: Cap:EMERGENCY_PARSER:1

Recv: Cap:HOST_ACTION_COMMANDS:1

Recv: Cap:PROMPT_SUPPORT:1

Recv: Cap:SDCARD:1

Recv: Cap:MULTI_VOLUME:0

Recv: Cap:REPEAT:1

Recv: Cap:SD_WRITE:1

Recv: Cap:AUTOREPORT_SD_STATUS:0

Recv: Cap:LONG_FILENAME:0

Recv: Cap:LFN_WRITE:0

Recv: Cap:CUSTOM_FIRMWARE_UPLOAD:0

Recv: Cap:EXTENDED_M20:0

Recv: Cap:THERMAL_PROTECTION:1

Recv: Cap:MOTION_MODES:0

Recv: Cap:ARCS:1

Recv: Cap:BABYSTEPPING:1

Recv: Cap:CHAMBER_TEMPERATURE:0

Recv: Cap:COOLER_TEMPERATURE:0

Recv: Cap:MEATPACK:1

Recv: Cap:CONFIG_EXPORT:0

Happy to answer and troubleshoot. I’m ok with coding and flashing firmware and stuff, but I can’t crack this one. Probably a random setting I’ve missed.
octoprint - heating bed issue - James.log (29.8 KB)

Thank you kindly.

James

Hello @James_Stranger !

Your printer is not able to reach 105°C:

2024-02-01 02:21:06,877 - octoprint.util.comm - WARNING - Received an error from the printer's firmware: Heating failed, system stopped! Heater_ID: bed - echo:busy: processing
| Last lines in terminal:
| Recv:  T:264.17 /270.00 B:97.70 /105.00 @:87 B@:127 W:?
| Recv: echo:busy: processing
| Recv:  T:264.90 /270.00 B:97.70 /105.00 @:81 B@:127 W:?
| Recv:  T:265.10 /270.00 B:97.70 /105.00 @:84 B@:127 W:?
| Recv: echo:busy: processing
| Recv:  T:266.04 /270.00 B:97.74 /105.00 @:75 B@:127 W:?
| Recv:  T:266.67 /270.00 B:97.83 /105.00 @:72 B@:127 W:?
| Recv: echo:busy: processing
| Recv:  T:267.40 /270.00 B:97.84 /105.00 @:67 B@:127 W:?
| Recv:  T:268.02 /270.00 B:97.84 /105.00 @:63 B@:127 W:?
| Recv: echo:busy: processing
| Recv:  T:268.33 /270.00 B:97.84 /105.00 @:64 B@:127 W:?
| Recv:  T:268.65 /270.00 B:97.92 /105.00 @:64 B@:127 W:?
| Recv: echo:busy: processing
| Recv:  T:269.69 /270.00 B:97.97 /105.00 @:53 B@:127 W:?
| Recv:  T:270.00 /270.00 B:97.97 /105.00 @:54 B@:127 W:?
| Recv: echo:busy: processing
| Recv:  T:270.00 /270.00 B:97.97 /105.00 @:58 B@:127 W:?
| Recv: Error:Heating failed, system stopped! Heater_ID: bed
| Recv: echo:busy: processing

Either it is too cold in your room or the hardware is just not able to do it.


Notes:

Please always attach the complete systeminfo bundle, no crippled logs.
If you copy and paste code excerpts from the terminal, please use the editor's preformatted text feature.
Format

hi on the anycubic website it states .
● Operational Print Bed Temperature: Max 90ºC

1 Like

So the workaround I've been using was to heat to 95, then 100, then 105. I do this manually and it works fine.

I understand and accept the risks of using above manufacturer's range. 90 C doesn't work for ABS and ASA. I have a fire-proof, insulated, enclosure. It's located in the garage and I have a camera with alerts and an Alexa/Google-enabled smart switch to cut power (he's called Einstein haha).

Any assistance would be great.

I see what you're saying @Ewald_Ikemann about the heating not changing in the last 3 lines.

My new question would then be, is there a way to adjust the heating check from every X checks/min to every Y/checks, because the bed does heat, just takes longer than normal I guess. But for me, it means my parts are successful. Otherwise, they fail.

This is not an issue you can mend by software.

The hardware is just not able to heat to that value on a regular basis.

You need a more powerful heating element for the bed.
These temperatures best can be achieved by a mains powered heating mat in conjunction with a SSR.

I do not recommend to run a printer beyond it's limits.