The gurgling sound you heard when you turned on your fridge is likely the result of the refrigerant flowing through the cooling system. When a refrigerator is not in use for some time or has been transported or tilted, the refrigerant may settle in certain parts of the system, causing it to make a gurgling or bubbling noise when the fridge is turned back on.
Here's a simple explanation of what happens:
Refrigerant circulation: The gurgling sound is caused by the movement of the refrigerant, a special fluid used in the cooling process. The refrigerant circulates through a closed system of coils and tubes, and the noise occurs when it flows from one part of the system to another.
Settling of refrigerant: During periods of inactivity or when the fridge is moved, the refrigerant may settle in the compressor or other parts of the cooling system.
Restarting the fridge: When you turn the fridge back on, the compressor starts working, and the refrigerant begins to circulate again. As it starts moving through the system, it can produce the gurgling or bubbling sound you heard.
Noise stops quickly: Once the refrigerant has fully circulated and settled into its normal operation, the gurgling sound should stop, and the fridge should operate quietly.
This is a normal occurrence and not a cause for concern. However, if the gurgling sound persists for an extended period or is accompanied by other unusual noises or issues with the fridge's performance, it's a good idea to have it checked by a professional technician to ensure there are no underlying problems with the cooling system.
Keep in mind that modern refrigerators are designed to be efficient and quiet during regular operation, so any ongoing or loud noises could indicate a potential problem that needs attention.