Hello everyone,
Heating the hotend to the target temperature does not work.
--> The hotend doesn't even get warm, error message occurs "heating failed printer halted please reset"
The interface after a restart always shows 20 °C. (right after restart for 0,5 sec it shows room temp 24°C)
Setup:
Arduino Mega +Ramps 1,4
4,7 MOhm thermistor from DYZE DESIGN
Marlin 2.0.7.4 (I know its a little older)
Here comes the weird part:
If I restart the printer and move eiter the X- or Y-axis, I suddenly get a
temperature reading for a little while (same after auto homing).
During that timeframe I can also heat the hotend and reach target temperature.
I can also do a whole print.
So I think it is not a hardware, but a firmware problem.
Current marlin settings for Temp Sensor:
#define TEMP_SENSOR_0 66 (recommended setting for this thermistor from Marlin doc and manufacturer)
#define HEATER_1_MINTEMP 1
#define HEATER_1_MAXTEMP 500
I have also tried lots of different settings, like playing with the following:
//#define THERMAL_PROTECTION_HOTENDS (completely turning protection off)
advanced:
#define THERMAL_PROTECTION_PERIOD 40
#define MAX_CONSECUTIVE_LOW_TEMPERATURE_ERROR_ALLOWED 10
#define MILLISECONDS_PREHEAT_TIME 20000
But nothing seems to help, does anybody have a solution to the problem?
Or even Ideas? I could update to the latest Marlin release but I would rather like to avoid that and
I don't think the chances are high that this will fix the error. (But maybe I am wrong?)
Every little help or idea is very appriciated!
Edited 1 time(s). Last edit at 05/11/2023 01:40PM by Itebayo.
