Here are the reasons:
● Air compressor break down
How to check if air compressor break down, there’s a common way to connect it to the power directly using the power cable of chiller, then check if air compressor can be turn on normally, like below:
● Wrong setting
The air assist can be controlled by the layer parameter of software, please make sure you have “If Blowing” selected to YES, like below:
Note: If the Processing Mode is Cut, “If Blowing: Yes” must not be changed.
● The air valve is close
Make sure have the manual air valve opened（horizontal means open), like below: