My Ender 3 Pro started throwing the Thermal Runaway E1 error last week. Previous to that I had not modified or changed anything on the printer in months, other than move it's location. I replaced the thermistor yesterday and set off a test print but got the same error.
Is this an issue with the motherboard? Or with the heater cartridge?
- Ender 3 Pro
- Creality 4.2.7 silent motherboard
- all metal dual gear extruder
- Glass bed
- stock everything else