HomeBrandsCrealityFDM 3D Printersbed_thermal_runaway
C
bed_thermal_runaway
Moderate
Creality · FDM 3D Printers
Heated Bed Temperature Exceeded Safety Limits
Quick Answer
Error code BED_THERMAL_RUNAWAY on your Creality FDM 3D Printers means: Heated Bed 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. Bed thermistor wiring damaged or pinched under moving bed
  2. Bed thermistor detached from the heated bed surface
  3. Poor thermal contact between thermistor and bed due to missing Kapton tape
  4. Mainboard reporting erratic ADC readings from a failing analog input
How to Fix It
1
Power off and inspect the bed thermistor cable routing for any pinch points along the cable chain or bed travel path
2
Verify the thermistor is taped securely to the underside of the heated bed with Kapton tape
3
Run bed PID autotune: M303 E-1 S60 C8 then save with M500
4
Check the thermistor connector on the mainboard for corrosion or loose pins
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 bed thermistor with cable
Kapton tape for thermistor mounting
Replacement mainboard (if ADC input is faulty)
Related Error Codes
THERMAL_RUNAWAYHEATING_FAILEDBED_HEATING_FAILEDMINTEMPMAXTEMP
Video Guides
Loading video guides…
Search more on YouTube →