Shark

For newcomers, this is the most common problem. Do not worry, you can solve it easily. Generally, the distance between nozzle and platform is too far or near. So rotary the knob under the platform to adjust the distance between the nozzle and platform again, at a piece of A4 paper distance or less).

This happens for the following reasons: 1. The Thermistor port of nozzle is not plugged into the motherboard above or poor contact; 2. The Thermistor port of nozzle is broken, you need to replace the spare thermistor.

This happens for the following reasons: 1. Thermistor port of nozzle screw is locked tightly, cause the temperature can not be sensing; 2.Thermistor port of nozzle is broken, you need to replace the spare thermistor.

Please check axis lines and limit lines whether the one-to-one correspondence, whether loose. When you check the extruder motor, you must preheat nozzle over 185℃.