Air Conditioning Maintenance Process:

1. Comprehensive Inspection. When air conditioners experience malfunctions, a thorough inspection is required, starting with checking the machine's pressure and the operating temperature values at various system points; for split systems, this must be done with the indoor and outdoor units connected; connect the pressure gauge to measure the compressor exhaust pressure, ensuring it's done when the machine is stationary to avoid high temperatures and burns during operation; feel the temperature of the pipeline from the compressor exhaust to the condenser with your hand, first quickly testing with your fingers to prevent injury.

2. Welding Operations. Prior to welding, release the refrigerant from the system. Always wear protective goggles to prevent eye injury. During the refrigerant release, operators should not face the process opening or exhale towards others to avoid frostbite from the refrigerant. 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 not allowed with the high-pressure valve or low-pressure valve closed to prevent overpressure causing system burst accidents or the compressor running in a vacuum leading to an explosion. When inspecting the outdoor fan system, power operation is required, and it must be ensured that the air conditioner panel and fan grill are properly installed.