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The cooling effect of air-conditioning has deteriorated, and many people will attribute the reason to insufficient refrigerant. Recently, the maintenance master of Zhejiang Jinhua 8890 convenient service platform introduced that refrigerant leakage is only one of the reasons for the deterioration of the cooling effect. Long-term failure to clean the air conditioner will also affect the cooling effect. How to judge whether the air-conditioning refrigerant in the home is leaking? The maintenance master introduced several methods.
Long-term non-cleaning, the cooling effect of air-conditioning deteriorates
Recently, Ms. Wang found that the air-conditioning and refrigeration effect in her home had deteriorated, so she asked the franchisees of the 8890 convenience service platform for help. It is understood that this air conditioner was bought 6 years ago, and the cooling effect was good at first. In the past two years, the cooling effect of the air conditioner has been getting worse and worse.
"For so many years, the air conditioner has not been filled with refrigerant. I suspect that the refrigerant has leaked." Ms. Wang told Master Jiao from Kun Lei's appliance repair department.
Master Jiao turned on the air conditioner and took out a pressure gauge to measure the refrigerant stock. The pressure gauge shows that although the refrigerant is less, it will not affect the cooling effect. During the disassembly inspection, Master Jiao found that the long-term uncleaned air conditioner was the cause of the deterioration of the cooling effect. After cleaning, the wind from the air conditioner was obviously cooler.
4 tricks to determine whether the air conditioner lacks refrigerant
"If the air conditioner suddenly does not cool or the cooling effect becomes poor, it is not necessarily caused by the lack of refrigerant. Dirty outdoor units, clogged filters, etc., will cause the cooling effect to deteriorate." In order to allow users to judge whether the home air conditioner is lacking For refrigerants, Master Jiao introduced 4 simple methods.
One is hand touch. Touch the condensing louver fan of the air conditioner with your hand. If the temperature does not change while the compressor is still working, it means that the refrigerant has leaked.
Second is to see. In the cooling state, adjust the temperature to 6 to 8 degrees Celsius lower than room temperature. After running for 15 minutes, observe whether there is white frost on the surface of the small copper pipe connecting the internal and external machines. If there is, it means that the refrigerant is missing. If there are oil stains on the connector, it also indicates that the refrigerant has leaked.
The third is hearing. If the self-vibration of the compressor is found to be louder than when it was newly purchased, it may be an abnormal noise caused by refrigerant leakage.
The last is temperature measurement. Find a thermometer and place it at the outlet of the cold air to see if the temperature displayed is 6°C to 8°C lower than the room temperature. If it is less than 5°C below the room temperature, it is almost the same as the room temperature, and the compressor is still working, indicating the refrigerant Has leaked.
Some air conditioning problems are not caused by malfunctions
"Autumn Tiger" Yu Wei is still there, and there are still many air-conditioning failure reports. However, some problems are not caused by malfunctions.
"When using the air conditioner, the user sometimes hears the sound of running water, which is normal." Master Jiao said that when the air conditioner is running, the refrigerant changes from a gas to a liquid, and then to a gas again. In this process, when the refrigerant receives a certain resistance, it will produce a "crushing" sound.
During the operation of the air conditioner, there will be a slight odor in the air supply state, and many people think that the refrigerant has leaked. In fact, the refrigerant itself is odorless. This odor is actually generated by the indoor odor through the activated carbon filter layer of the air conditioner.
Within ten minutes after the air conditioner is turned on, the user may hear a "crack" sound. The shell material of the air conditioner is made of thin milky white embossed plastic. When the temperature changes, the plastic will expand and contract due to heat, resulting in abnormal noise.
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