How is it that the mobile phone air conditioner doesn't cool for a few minutes? Xi' an air-condition maintenance

1, a big reason is that the refrigeration effect will be worse or the refrigeration mode will be invalid because of insufficient refrigerant, that is to say, the freon reserve in air conditioning is insufficient. 2. The check valve leaks. When the check valve of the air conditioner leaks, the pressure difference between high and low pressure in the refrigeration system will start to decrease, and the temperature of the outdoor heat exchanger will start to rise, leading to problems in the refrigeration system. 3. The four-way valve leaks air. The mobile air conditioner utilizes the cooling and heating state of the air conditioner through the four-way valve. If there is gas leakage, it may cause the air conditioner to cool for several minutes without cooling. Suggested solution: 1. Check whether it is caused by insufficient refrigerant first. If so, you need to add enough refrigerant to solve the problem that the mobile air conditioner does not cool for several minutes. 2. If this problem is eliminated, it is necessary to check whether the check valve leaks. If the one-way valve leaks, it is necessary to contact professional maintenance personnel for maintenance, or directly replace the one-way valve. After replacement, the cooling problem can be solved, and it will not be cooled for a few minutes. 3. In addition, check whether the four-way valve leaks. If the four-way valve leaks, it is also necessary to contact professional maintenance personnel for on-site maintenance. 4. In addition, the mobile air conditioner needs to clean the filter screen and condenser regularly, which can reduce the failure of the air conditioner due to heat dissipation.