The Touchscreen displays a -30℃ nozzle temperature.
- The thermistor is dislocated.
- The hot end is broken.
1. Check if the thermistor (see circled in the picture below) is securely seated in the hole. Plug it back in if it is not. If the problem persists, try the next step.
2. Replace the hot end as shown in this video.
If the issue still exists, please kindly send an email to firstname.lastname@example.org and we will help you out.