What's wrong with Gree air conditioner starting without cooling? Nanchang air-condition maintenance

The coolant evaporated; The air conditioning filter element is seriously blocked and dirty. Voltage instability; The compressor is completely aged. If the compressor sound is normal, insert an instrument to measure the pressure; if the evaporator pressure is insufficient, replenish water; The space of the house is larger than the refrigeration range, the room temperature is too high, the air conditioning is too low, and the guide road does not work; The solenoid valve for cooling and heating is broken; Freon is gone, but it usually takes three years to add Freon. First, check whether the compressor of the outdoor unit is started. If not, it is mostly the internal circuit fault of the outdoor unit of the air conditioner. 1, there are many reasons for the lack of air conditioning power, such as using low-power air conditioning to refrigerate a large room; Although the power of the air conditioner matches the area of the room, in the process of using the air conditioner, the air tightness of the room itself is insufficient and there are many heat sources, which will also lead to insufficient refrigeration of the air conditioner. 2. Insufficient refrigerant in air conditioner will also cause Gree's air conditioner not to be cooled. If the air conditioner is used for a long time, the refrigeration effect will decrease, and the refrigerant will evaporate if it is used for a long time. If the refrigerant leaks, it will also lead to insufficient refrigerant in the air conditioner. 3. If the air conditioner is not cleaned for a long time, thick dust will accumulate on the radiators of the outdoor and indoor units of the air conditioner, which will lead to the poor heat dissipation effect of the air conditioner radiator and the air conditioner will not be cooled. If the air conditioner is not cleaned and maintained for a long time, people will easily get air conditioning disease. The socket is not plugged in. When Gree air conditioner is not cooling, check whether the air conditioner power plug is plugged in. If the power plug of the air conditioner is not plugged in properly or the power plug is loose, the air conditioner will not be able to operate and cool. The outdoor temperature is too high. Because the outdoor unit of the air conditioner is relatively closed, the temperature around the outdoor unit is very high, so the air around the outdoor unit of the air conditioner will not circulate, and the hot air exhausted from the air conditioner cannot be exhausted, resulting in the air conditioner being unable to cool. 6. The voltage is not stable enough. During the operation of the air conditioner, the normal voltage is always not reached, or the power supply voltage is insufficient, which leads to the air conditioner not being able to cool well.