¶ 1. Phenomenon Description
The machine's extruder temperature display is abnormal.
The screen displays "Error, key: 2509, Sensor temperature exception"
¶ 2. Cause Analysis
¶ 2.1 Thermistor issue
¶ 2.2 Thermosensitive filament is damaged or not properly inserted
¶ 2.3 Hotend board issue
¶ 3. Troubleshooting and Solution
¶ 3.1 Check if the thermosensitive wiring is loose/damaged/broken
¶ 3.2 Replug the thermosensitive ribbon cable
¶ 3.3 Re-insert nozzle kit
After checking the above steps, if the problem still cannot be solved, please contact after-sales service cs@creality.com