Marlin icon indicating copy to clipboard operation
Marlin copied to clipboard

Increasing HEATER_0_MAXTEMP still throws MAXTEMP error

Open calh opened this issue 2 years ago • 5 comments

Description

I have an all metal hot end, and am trying to print Nylon at 300C. I increased the HEATER_0_MAXTEMP to 330 to start with, and then also bumped it up to 350 as a second test.

Both values caused my printer to kill at 297C with the message:

Printer Kill Reason:
  Err: MAXTEMP
  Restart Required

Under Control -> Temp, the input does actually allow me to set the value past 300, but it seems to consistently fail with this error when it reaches 297.

Steps to Reproduce

  • Raise HEATER_0_MAXTEMP to 350
  • Run a PID tune for hot end, 10 cycles, 280C, save settings
  • Set the temp to 300
  • Wait for the error

Additional Information

my_config.zip heater_error

calh avatar Apr 28 '22 17:04 calh

@tititopher68-dev, it's currently the stock heater and thermistor, but I just received this 50W heater and thermistor pack, which I'm going to install after my current print is done.

However, it seemed to reach the temps I'm looking for just fine, although it was a little slow to climb past 280C. It didn't behave like thermal runaway, and grepping through the code where the various temp checks are done, it doesn't make any sense that it should have been triggered.

calh avatar Apr 29 '22 22:04 calh

hello, do you have ender 3 v2?

dfgyhhju avatar Dec 22 '22 16:12 dfgyhhju

Yes, it's an ender 3 v2, 4.2.2 mainboard. Also I did install the 50W heater, and the temp does increase a little faster, but I still can't comfortably push it past 290C because of this error.

calh avatar Dec 22 '22 16:12 calh

can I ask you for this firmware I don't know how to compile firmware

dfgyhhju avatar Dec 23 '22 14:12 dfgyhhju

dear friend, can you share this firmware for 300C.I have tried compiling many times and I have errors all the time.I'll be glad if you share.thank you!

dfgyhhju avatar Dec 25 '22 09:12 dfgyhhju