Refrigerant is the medium that transfers heat in the air conditioning refrigeration system. Without it, heat cannot be exchanged efficiently. The air conditioner also cannot cool or heat. Therefore, once the air conditioner is short of refrigerant, it will externally show poor cooling (heat) effect, no cooling (heat), protective shutdown, indoor unit leakage (sometimes water spray), indoor unit evaporator freezing, etc. There are even more problems that cannot be seen on the surface - reducing the service life of the air conditioner, wasting electricity, and damaging the air conditioner compressor. Therefore, in order to use the air conditioner normally, there must be enough refrigerant.
The method of adding refrigerant to air conditioner is as follows:
1. Turn on the air conditioner; When adding refrigerant in summer, the air conditioner can be operated directly in cooling mode. Because refrigerant cannot be added in the heating state, when adding refrigerant in winter, the heating method must be used to pull out the reversing valve line to force the air conditioner to enter the cooling state.
2. Connect the refrigerant adding equipment; After the air conditioner starts normally, connect the refrigerant-adding equipment from the process port on the low-pressure valve side of the outdoor unit. During this process, the air and dirt in the refrigerant pipe must be drained.
3. Measure pressure and add refrigerant; Observe low pressure in summer. When the ambient temperature is about 32 degrees Celsius, the pressure is controlled at about 0.45MP; Observe the high pressure during heating in winter. After the pressure stabilizes, control it to around 1.7MP.
4. Remove the refrigerant adding equipment; Remove the refrigerant-adding equipment in the cooling state and tighten the sealing nut of the outdoor unit. If the equipment is removed in the heating state, a large amount of refrigerant will leak.
5. Adding refrigerant is completed.
