My HITACHI Piston compressor is having a problem.

Compressor run until reach Cut-out pressure. And then it stop automatically. After that I used air.

But the problem is here, motor doesn't start automatically again when tank pressure reach to cut-in pressure.

How can I troubleshoot step-by-step?

Is there any idea parts,which might be problem?

Thanks a lot

And much Regards for any one who help me.