You can go to some vocational training institutions, or you can go directly to some dealers and repairers to learn. But in terms of learning speed and skill mastery, the best way is to go directly to the after-sales service system of a manufacturer to engage in air-conditioning product maintenance. Generally, you will become a very skilled and relatively professional maintenance personnel in 2 ~ 3 years.

Extended content:

1, the basic method of adjustment and maintenance. Carefully observe the working conditions of each part of the air conditioner, focusing on the refrigeration system, electrical system and air system, and judge whether it works normally. For refrigeration oil, clean soft cloth and soft paper can also be used to wipe the welded parts and joints of the pipeline, and observe whether there is oil pollution to judge whether there is leakage.

2. Listen to the basic methods of air conditioning maintenance. Turn on the power supply, and listen carefully to whether the operating sound of the air-conditioning compressor is normal, whether there is abnormal sound, whether the fan is noisy, whether the noise is too large, etc. Under normal circumstances, the air conditioner has slight vibration and low noise, generally below 50DB.

If the vibration and noise are too large, the possible reasons are: foam plastic pad, etc. , will aggravate the vibration and noise of air conditioning operation. Especially at the beginning and stop. When the chassis collides, the axis of the fan moves and the blades are out of balance, which will also make a collision sound; If there is a foreign body in the fan, the blades will also collide with it.

3. Basic methods of air conditioning maintenance. Touching the relevant parts of the air conditioner by hand and feeling its cold, heat and vibration are helpful to judge the nature and location of the fault.

In general, the temperature of the condenser gradually decreases from top to bottom, and the temperature in the lower part is slightly higher than the ambient temperature. If the whole condenser is not hot or the upper part is slightly warm, or although it is hot, the temperatures of two adjacent tubes are obviously different, it is abnormal. Evaporator Under normal circumstances, if you immerse your fingers in the water on the surface of the evaporator, you will feel cold and sticky.