What is the reason why the elevator door is always open and closed when not in use?
To see the door lock circuit is good, but also look at the door in place is not in place, there is light curtain is not dust.
Close the door in question.
Elevator control cabinet in the elevator door system board failure, usually 3 tube or capacitor is broken, get the maintenance of the car to hurt the factory to sell it off the board I am the same day before the same problem, just repair.
