HomeBrandsCrealityFDM 3D Printersthermal_runaway
C
thermal_runaway
Moderate
Creality · FDM 3D Printers
Hotend Temperature Exceeded Safety Limits
Quick Answer
Error code THERMAL_RUNAWAY on your Creality FDM 3D Printers means: Hotend Temperature Exceeded Safety Limits. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
CR-10 SECR-10 Smart ProEnder-3 S1 ProEnder-3 V3Ender-3 V3 SEEnder-5 S1K1K1 Max
Likely Causes
  1. Loose or damaged hotend thermistor wiring
  2. Hotend heater cartridge not seated properly in heat block
  3. PID tuning values incorrect or not calibrated for the environment
  4. Silicone sock fell off heat block causing rapid heat loss and erratic readings
  5. Firmware thermal protection threshold set too aggressively
How to Fix It
1
Immediately power off the printer and allow the hotend to cool completely
2
Inspect the thermistor wiring from the heat block to the mainboard for pinched or frayed wires
3
Verify the thermistor bead is securely inserted into the heat block and held with a set screw
4
Run PID autotune via terminal: M303 E0 S210 C8 then save with M500
5
Check the silicone sock is present and properly fitted around the heat block
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
NTC 100K thermistor (Creality OEM or compatible)
Silicone sock for heat block
40W heater cartridge (24V)
Related Error Codes
HEATING_FAILEDBED_THERMAL_RUNAWAYBED_HEATING_FAILEDMINTEMPMAXTEMP
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