If the refrigerator is noisy or loud particularly when the ice maker is filling the water inlet valve might be at fault.
Frigidaire refrigerator knocking noise.
Some refrigerators make knocking noises when cycling on or off as the fan begins to spin or stop.
A typical refrigerator can last up to 20 years.
You can usually trace the sound to its source and decide whether to fix it yourself or call an appliance pro.
If you own a frigidaire that is making a knocking sound it could be the result of a couple of different causes.
Disconnect your refrigerator from the power source and then remove the rear access panel.
You may need to open the freezer door to clearly hear if the noise is inside or outside.
While the most likely reason for a refrigerator to make a knocking sound is the compressor the condenser fan might also cause a fridge banging noise.
This may occur if the fan becomes clogged with lint or other debris which reduces air flow and makes a clicking knocking or whistling sound.
How to inspect a refrigerator condenser fan motor.
The water inlet valve is an electrically controlled valve that opens to supply water to the refrigerator dispenser and icemaker.
Also as a general rule an older refrigerator will make more noise than a newer unit.
Unless the fan assembly breaks this is simply a mechanical phenomenon that you can live with.
This noise will stop in a few days once the gasket becomes more pliable.
Skip to step 3 if the sound is on the outside or coming from behind the freezer.
In addition to noise your fridge might not be staying as cool as normal and or may be turning on and off regularly.
During normal operation a refrigerator makes a number of noises but most of them are unnoticeable.
Over time mineral deposits can accumulate inside the valve and restrict the water flow.
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Water lines supplying the refrigerator may make a loud bang due to a condition called water hammer.
Listen carefully to determine whether the knocking noise is coming from the inside or outside of the freezer.