If the alarm sound continues even after the door is shut, check for obstructions and check if the door gasket is dirty or damaged. The door alarm alerts when a refrigerator door is left open for a long time. The clicking occurs when the door mullion opens and closes. If you hear a clicking sound, that is the sound of the door mullion, which is a plate that prevents heat loss. If you hear a dripping or hissing sound, it is the sound of water during the defrosting process and sound of the water droplets being evaporated.Ī whirring sound is caused by the water valve opening when using the water dispenser. The sounds occur when the valve is opening or closing.Īnother buzzing and whirring sound occurs when the mechanical chamber fan is operating and cooling down the compressor. Tapping and rattling are sounds from the three-way valve, which controls the circulation of refrigerant. The noise gets louder after the initial installation, and the defrosting process, as it needs to cool down the refrigerator quickly. Hissing and gurgling are sounds of the refrigerant circulating.īuzzing and whirring are the operating sounds of the compressor. This is most likely to occur after the defrosting process. The whirring sound can be heard when the damper is on.Ĭracking and banging sounds are usually due to thermal expansion, with noises coming from the plastic components expanding and contracting due to the change of temperature. The damper is a device for controlling the temperature of the refrigerator, the freezer, or the upper and lower compartments. If you hear a whirring sound, that is likely the damper. The fan is also used for the automatic defrost cycle, which happens every 4 to 16 hours depending on how often the refrigerator doors are opened. The fan inside the refrigerator circulates the cold air inside, and a buzzing noise occurs when it is operating. In this video we’ll go over noises that are to be expected with your LG refrigerator, and why they occur. Occasional noise coming from an LG refrigerator is normal because of the various operational functions.
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