Q. The elevator door opens and closes even though no one is pressing the button. If the elevator you take has this problem, it may be due to the following reasons:
1. Abnormal sensing near the elevator’s safety door or safety light curtain
2. There is foreign matter stuck in the door track or there is too much dust.
3. The buttons on the control panel are stuck or the contacts are faulty.
Additional knowledge: Safety light curtain is a light-based elevator door safety protection device that can prevent elevator door pinching incidents.


Q. What’s wrong with the elevator passing stops and stopping at random floors?
In fact, this is a problem with the horizontal photoelectric of small parts in the control system!
Its main function is to enable the elevator car to stop accurately when it reaches the designated floor. If the horizontal photoelectric aging failure occurs, the elevator floor will not stop or the floor will be disordered. The control system itself is a combination of machine boards and electronic parts. The structure is complex and precise, just like the human brain. When the elevator is in operation for many years, unexpected failures caused by computer crashes or aging of parts and circuits will occur, so daily maintenance is also very important!
But no matter what the reason is, if you find that the elevator is abnormal, it is the best choice to contact the elevator company directly for repair. You should also remember to perform regular maintenance.
The professional knowledge part is left to Liwen, and the comfortable ride experience is left to you!