Question about Refrigerators
I previously had LG model LFC255760 for 1.5 years and had it replaced last week with LFC25770. The old model never had this noise and now the new one has it every time the compressor runs, from the time it turns on to when it turns off. There is a place on one of the lines in the sealed system that has corrosion on it where it looks like it had been leaking and then corroded itself shut. Could this have let air into the system and is causing the noise? Could the system be low on freon?
If there is a leak in the system you will notice considerable change in temperature of the frig. In most cases, if this is a leak, you will see a builup of oil coming out of the leak as refrigerant has oil in it. You may be able to hear it or smell the refrigerant. What is commonplace in alot of systems is this noise. When the compressor is running, it is biulder pressure inside of the refrigerant lines. There is a low pressure side and a high pressure side while it is running. When the compressor shuts down after achieving the set temp, The system will start to equal the pressure on both high and low sides of the system. Actually the compressor will not start again untill these pressures are equalized or at least close. The noise you are hearing is most likely the refrigerant in the system while the system is equalizing the pressure on both high and low sides. I have noticed that some systems are more noticable than others. Unless you notice considerable change in temp of your frig, it is probably the equalizing of the system. I am not sure what the corrosion on the line would be without actualy seeing it myself but I have never come across a frig that had a leak and didn`t lose all or enough of the refrigerant without it being noticable inside the frig itself. For it to be a leak the temp in the frig should be or very soon will be noticably warmer.
Posted on Nov 14, 2008
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