If it won't start, the pressure switch may be faulty or the pressure is already too high.
Since I don't have a specific user manual PDF attached, I can provide a , followed by a story about getting one running. instruktsiia denzel kompressor
"It's just a motor," he muttered, opening the (manual) he thankfully saved. It was 30 pages of diagrams. He focused on the troubleshooting section. Issue: Motor does not start. Possible cause: No power or pressure switch. If it won't start, the pressure switch may
Ivan, armed with a screwdriver and a flashlight, opened the pressure switch box. Inside, a small contact point was stuck. A little sand had gotten in from his last project. Using a piece of sandpaper and a deep breath, he cleaned the contact, blew out the dust, and reassembled it. Click. He pulled the switch up. VROOOM. It was 30 pages of diagrams