When the weather turns warmer, the wall-mounted split air conditioner turns on, and the weather turns cooler, and the wall-mounted split air conditioner turns off. This is a perennial rule. Note that the outdoor unit and indoor unit should be thoroughly inspected before the wall-mounted split air conditioner is turned off. Maintenance, maintenance, and cleaning should be buckled one by one, and should not be disconnected. The leak-prone links should be fastened and strictly inspected. After completing the above steps, put on the hood of the wall-mounted split air conditioner to prevent dust pollution and prevent wall-mounted splitting. Keep the air conditioner dripping and ingress clean, and prepare to use it again in the coming year. This will clean, save energy and extend the service life of the wall-mounted split air conditioner. For high-quality split machines of well-known brands, the cabinets must be protected to give full play to the energy-saving effect.