Air Conditioning Maintenance Process:

1. Comprehensive Inspection. When air conditioning units encounter malfunctions, a thorough check is required, initially testing parameters such as machine pressure and system operating temperatures at various points; for split systems, this must be done with both indoor and outdoor units connected; connect a pressure gauge to measure the compressor exhaust pressure, ensuring it's done when the machine is stationary to avoid burns from high temperatures during operation; use your hand to feel the temperature of the compressor exhaust to the condenser section, first using your fingers to quickly test some temperatures to prevent injury.

2. Welding Operations. Prior to welding, release the Freon from the system. Always wear protective eyewear to prevent eye injury during welding. Avoid facing the process opening or releasing gas towards others during Freon release to prevent frostbite. Adhere to welding operation requirements to prevent poor installation or injury to others.

3. Power Operation. When repairing the outdoor unit of a split system separately, power operation is prohibited when the high-pressure or low-pressure valves are closed to avoid accidents such as system bursting due to excessive pressure or explosion accidents caused by the compressor running in a vacuum. When inspecting the outdoor fan system, power operation is required, and it must be ensured that the air conditioner panel and fan grille are properly installed.