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Heating Related

Checking the Heating Function​

High Temperature Warning

Heating operations generate high temperatures. Do not touch the hot end or heat bed, and ensure there are no flammable materials nearby.

1. Check the Heating Port Indicator Light Status​

  • LED Off: The heating port is not working. Please check if the pin settings in the configuration are correct.
  • LED On: Indicates that the heating port is working. At this time, use a multimeter to measure the output voltage of the port to confirm if the power supply is normal.

2. Check Power Supply Compatibility​

  • Confirm whether the rated power of the power supply meets the device requirements. Insufficient power supply may prevent the heating temperature from reaching the set value.
  • Power Calculation Example:
  • If the power supply specification is 24V 5A, the maximum output power is 120W. If the heating port power is 40W, with 80W remaining for other components, this configuration may not meet overall needs.
  • If the power supply specification is 24V 10A, the maximum output power is 240W, which is generally sufficient to meet the power requirements of the heating port and other components.

3. Troubleshooting Suggestions​

  • If the heating port cannot reach the set temperature, check whether the heating element or connecting wires are damaged or have poor contact.
  • If the heating port has no control signal, the LED is off, but there is still output:
  • If the heating port LED is off and it cannot be controlled, but voltage is detected at the output, first check and save the corresponding pin settings in the configuration. If the output persists after saving, the MOS transistor can be determined to be damaged.

Notes:​

  • Follow safety operation procedures when measuring voltage to avoid short circuits or electric shocks.
  • If the power supply power is borderline, it is recommended to replace it with a higher power supply to ensure system stability.

PID Temperature Calibration​

PID calibration can optimize the stability and response speed of the heater temperature control.

Calibration Commands​

# Extruder PID calibration (Change TARGET to common printing temperature)
PID_CALIBRATE HEATER=extruder TARGET=200

# Heat bed PID calibration (Change TARGET to common heat bed temperature)
PID_CALIBRATE HEATER=heater_bed TARGET=60
Important Note

After calibration, parameters must be saved:

SAVE_CONFIG

Otherwise, calibration data will be lost after a restart!

Temperature Reaches Target but Very Slowly​

  • Add Configuration

    • Extruder
    printer.cfg
    [verify_heater extruder]
    max_error: 120
    check_gain_time:120
    hysteresis: 50
    heating_gain: 2
    • Heat Bed
    printer.cfg
    [verify_heater heater_bed]
    max_error: 120
    check_gain_time:120
    hysteresis: 50
    heating_gain: 2
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