I would like to ask what is the cause of the phenomenon that the elevator has stopped between floors

The problem is not clear, see what brand and what model of elevator, to make accurate, now on the overall possible problem description, stop running between the two floors, you can use a multimeter in the computer room to test whether the voltage of the door lock circuit emergency stop circuit has been maintained, first test the emergency stop circuit, car door circuit, hall door circuit, of course, you can use the oscilloscope to see the graph is more accurate, if it is an instantaneous power failure in the recovery, the multimeter may not be able to measure, if the frequency of failure is higher, You can choose the machine room short-circuit hall door lock and then go up and down to open the elevator for the test (can not be short-circuited car door lock at the same time, nor can passengers use it), and then not in the hall door lock restoration, short-circuit car door lock, if it is not possible, restore the car door after short-circuit all safety switches, precautions are the same as short-circuit hall doors.

If none of the above can solve the problem, then it means that it is not the hall car door and the safety loop problem, see what is the control of the shaft information, it is the bistable magnetic switch of Schindler elevator to check the closure of the magnetic switch, the door area and the speed change, if it is not a magnetic switch, check the action of the photoelectric sensor covering plate, which can be measured from the indicator light or voltage in the machine room.

If there is no problem with the hoistway information, then it is necessary to see whether the wiring of the rotary encoder and the signal of the encoder to the inverter are normal, you can check the encoder wiring or replace the encoder, and at the same time check whether the parameters are correct when the inverter fails, whether the speed is correct, whether the inverter output input contactor is electrocuted and whether there is a virtual arc phenomenon, if it is still not possible, it is necessary to check and fasten the circuit of the terminal in several positions mentioned above.

Under normal circumstances, there are several situations in which the elevator cannot stop at a certain landing:

1.The button on a certain floor of the elevator is damaged, and the elevator cannot receive the summoning instruction after pressing the button2The elevator is set up on a certain floor without stopping, and the speed can be adjusted through the system setting, and the elevator is allowed to stop at floor 3

When the elevator is fully loaded, the elevator will not stop at the floor to carry passengers in the middle of the elevator, and will go straight to the base station or registered floor. After the full load state is eliminated, the elevator can stop the corresponding floor normally.

4.The failure of the leveling device on a certain floor causes the elevator to not stop, and the elevator will detect the fault state and cannot be used.

The above are all personal opinions, welcome to add!

Yes, a failure of the leveling induction system will cause the elevator to fail to stop on that floor.

Yes, water ingress will cause a short circuit on the elevator line, and it will stop directly.