How to close the heat exchange of fresh air system?

1. Click the "Open" button in the upper right corner to turn on or off the fresh air system.

2. Click the mode switch key to select the heat exchange mode.

3. It is recommended to use the heat exchange mode in the cooling and heating mode of air conditioning to avoid increasing the air conditioning load.

4. To turn off hot exchange, you need to press the mode switch button again to switch modes. Fresh air system is a building electromechanical system that provides fresh air for the living room, and its function is to discharge the dirty air with high carbon dioxide content in the room.