Air energy water heater refrigerant leakage problem and solutions_maintenance

　　【】Refrigerant leakage is one of the most common faults in the heat pump system. The leakage has technological problems, such as poor welding quality, friction between copper pipes or between copper pipes and the casing, etc. The parts themselves, such as pressure gauges, high and low pressure switches, pressure relief valves, refrigerant charging check valves, etc., may also cause refrigerant leakage due to their own quality problems.

The performance of 　　 heat pump after refrigerant leakage is that all components can operate normally, but the heating capacity is greatly reduced or even lost. The leakage of refrigerant will also be accompanied by the reduction of oil and compression. If the machine runs for a long time, but it cannot reach the predetermined water temperature and shuts down, and the return air volume is too small, it will cause the temperature of the compressor casing to rise, the lubrication deterioration, and the risk of the compressor.

　　The method of judging refrigerant leakage is to check the return pressure of the compressor when the heat pump is running. If it is lower than the normal value, it may have leaked. In addition, an ammeter can also be used to detect the operating current. If the current is significantly lower than the normal value, it can also be determined that the system has leaked. Another more intuitive and convenient method is to observe the evaporator: due to refrigerant leakage, the low pressure pressure drops, the heat pump evaporator tends to increase in frosting, and unreasonable frosting may occur (such as when the temperature is above 10°C). frost). After a refrigerant leak occurs, you should immediately start to make simple and repair the leak. You can't replenish the refrigerant hastily. The leak cannot be found and the leak is completed. The refrigerant leak will continue, and at the same time, the refrigerant must be refilled. Pay attention to replenish the refrigerating machine oil in an appropriate amount.

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