The elevator at home was flooded, and the property said that the light sensor and inverter were broken, and asked me for 3500. After bargaining for 2500, I always felt strange.

The light sensor is fine. The inverter is broken, which is strange. The elevator machine room is equipped with a traction machine frequency converter, and your water will flow up to the elevator machine room on the roof. And the inverter doesn't seem so cheap ... the inverter of the car door is installed on the top of the car, unless your water flows into the car along the elevator shaft, and then the inverter is damaged.

In any case, you can lose money, but you must have a formal report or evidence. It is natural for you to compensate for what you have damaged. You have no obligation to compensate for what you have damaged.