Frigidaire Refrigerator Knocking Noise

Water lines supplying the refrigerator may make a loud bang due to a condition called water hammer.

Frigidaire refrigerator knocking noise.

During normal operation a refrigerator makes a number of noises but most of them are unnoticeable. You may need to open the freezer door to clearly hear if the noise is inside or outside. Also as a general rule an older refrigerator will make more noise than a newer unit. The condenser fan motor runs at the same time as the evaporator motor and the compressor.

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. Disconnect your refrigerator from the power source and then remove the rear access panel. This noise will stop in a few days once the gasket becomes more pliable. 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.

A typical refrigerator can last up to 20 years. Over time mineral deposits can accumulate inside the valve and restrict the water flow. You can usually trace the sound to its source and decide whether to fix it yourself or call an appliance pro. The water inlet valve is an electrically controlled valve that opens to supply water to the refrigerator dispenser and icemaker.

In addition to noise your fridge might not be staying as cool as normal and or may be turning on and off regularly. Water hammer is a knocking or banging noise in a water line that occurs when the water valve opens and closes. There could be problems if a sound is too loud goes on too long or repeats too often. Some refrigerators make knocking noises when cycling on or off as the fan begins to spin or stop.

If you own a frigidaire that is making a knocking sound it could be the result of a couple of different causes. Skip to step 3 if the sound is on the outside or coming from behind the freezer. How to inspect a refrigerator condenser fan motor. Unless the fan assembly breaks this is simply a mechanical phenomenon that you can live with.