You are in a balcony of a building, facing towards the open door, turn left. In-front of you there is a open door, walk to the open door, turn left, enter the room, in-front of you there is a open entrance, walk to the open entrance, slightly turn left, walk straight in the narrow path, in-front of you there is a open door, walk through the open door and exit the room, walk straight, to right you can see a staircase, walk to the staircase, climb the staircase. In-front of you there is a open door, walk through the open door and exit the room, turn left, walk straight, to the left you have a AC compressor, that is your end point.