Job Recruitment Website - Property management company - The elevator door light is on all the time. Why didn't I respond by pressing other buttons?

The elevator door light is on all the time. Why didn't I respond by pressing other buttons?

1. Look at the screen for dust first. When you see the light curtain flashing, just wipe it with your hand a few times.

2. If you haven't gone to the computer room to restart the elevator. See if it's okay ~

3. If it doesn't work, go to the machine room for maintenance, and wipe the dust on the door guide rail at the top of the running car. .

If it doesn't work, you must check the safety circuit. . .