Air Conditioner Maintenance Process:

1. Comprehensive Inspection. When various air conditioners encounter malfunctions, a thorough inspection is required, including checking the machine's pressure and the operating temperatures at various points in the system; for split systems, this must be done with both indoor and outdoor units connected; connect the pressure gauge to detect the compressor exhaust pressure when the machine is stationary to avoid high temperatures and burns during operation; use your hand to feel the temperature of the compressor exhaust to the condenser section of the piping, first use 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 during welding to prevent eye injury. Avoid facing the process opening or releasing gas towards others while releasing Freon to prevent frostbite. Adhere to welding operation requirements to ensure proper installation and prevent injury to others.

3. Power Operation. When repairing the outdoor unit of a split air conditioner separately, do not operate with power on when the high-pressure or low-pressure valves are closed to avoid accidents caused by excessive pressure and system rupture, or explosions due to compressor vacuum operation. When inspecting the outdoor fan system, it must be powered on, and it's crucial to ensure that the air conditioner panel and fan grill are properly installed.