I'm from the Maintenance department.Did you call us? 我是维修部的。是您给我打电话的吗?

Yes. The air conditioner is not working properly. 是的。 这个空调有些毛病。

What's the problem? 有什么问题?

The remote control doesn't work. I turned on the air conditioner, but I can't adjust the temperature. 遥控器有问题。我把空调打开了，但是我无法调节温度。

Let me have a look. I think the batteries should be changed. Let me replace them with new ones.Now, it's working. 让我看看。我想可能电池该换了。我换上两个新的。好，现在行了。