What should I do if the owner's elevator card set in the smart community cannot be used?

If you are a property owner, when the elevator control circuit fails, you should first ask, see, listen and smell, so as to be aware of it. The so-called question is to ask the operator or the person who reported the fault the phenomenon when the fault occurred, and whether any adjustments or replacement parts were made before the fault occurred; The so-called look is to observe whether all parts work normally, whether all kinds of signals indicating the elevator are correct, and whether the appearance color of electrical components has changed. The so-called listening means listening to whether there is abnormal noise when the circuit works; Listening is smelling, that is, smelling whether there is abnormal smell in circuit components. I hope I can help you.