Sometimes the scissor lift platform can’t raising as well. Maybe some function is locked or opened. Following way can help you solve the problem. 1. There’s a safety lock on the two control panels. If any of this lock pressed, the system will locked. And the platform can’t up or down. You need rotate right this lock, then check if the lift can be working.
2. When you press UP button, the motor running but the platform can’t raised, maybe manual down valve is opened, you need close it and try again.
Manual down valve location as following photo:

Contact us if you still have any questions on the scissor lift platform.