The heated bed cannot heat up when you set the target temperature on the touchscreen or start a print.
- The thermistor of the bed is open or shorted
- The circuit of the bed is open
- The controller cannot detect the bed
- The heated bed port on the controller is defective
Please refer to this article the troubleshoot.
Step 1: Check if the cable of heated is broken.
Step 2: Please check if you plug the cable in the right port on the controller.
Step 3: If you have a multimeter, you can measure the resistance of the heated bed. The resistance should be the range of 60 KΩ - 130 KΩ
Step 4: You can also check if the circuit is open by measuring the two bigger pins in the cable of the heated bed.
To complete your continuity test, place one probe at each end of the circuit or component you want to test.
As before, if your circuit is continuous, the screen displays a value of zero (or near zero), and the multimeter beeps.
If the screen displays 1 or OL (open loop), there's no continuity—that is, there's no path for electric current to flow from one probe to the other.
If the measured resistance value is within the given range and the continuity is good. Please check the controller with Snapmaker Luban.
Step 5: Connect the machine with your PC via the provided USB cable, launch Snapmaker Luban and select the right serial port.
Open the console and enter the command "M2000 S0". The controller will return the status of the machine and please send the following screenshot to Snapmaker Support team.