3D printing module won't heat up
The known reasons for the heating problem are:
Please visit our troubleshooting tutorial to fix it
Or follow the instructions below to repair it:
If the plastic cover is broken or the wire touches the metal part, the sensor can't read the temperature. You can check it out by sending
M105
in Terminal, with this issue, you should see a minus temperature value(usually -15 ℃) or see a MINTEMP message shown as the picture above. 
To fix this:





Temperature couldn't reach the target temperature after a few minutes.
To fix this:


