Why is my fridge making a knocking sound?

While the most likely reason for a refrigerator to make a knocking sound is the compressor, the condenser fan might also make noise. This may occur if the fan becomes clogged with lint, which reduces air flow and makes a clicking, knocking or whistling sound.Click to see full answer. In this regard, why is my freezer making a knocking noise?A freezer compressor is what pumps chilled Freon — or another cooling agent — through coils that line the freezer compartment. The cooling agent inside the compressor is sensitive to being moved around, which can cause knocking noises. Also, loose components can cause knocking sounds.Also Know, why does my freezer make a popping noise? It’s inside at the bottom of the freezer, behind the back of the bottom drawer. The noise you’re hearing is normal. This is the ice melting and dripping on the heat element, during the defrost cycle. It has to defrost the evaporator periodically, to keep it from getting so thick and that’s the popping noise you hear. Simply so, why is my car AC making a knocking noise? The most common causes of a loud knocking or banging noise are: A loose part in the AC compressor. This is the part houses in the outdoor unit. It could be its crankshaft, connecting rod or piston pin.Why does my Frigidaire refrigerator make a knocking noise?If you own a Frigidaire that is making a knocking sound, it could be the result of a couple of different causes. Some refrigerators make knocking noises when cycling on or off, as the fan begins to spin or stop. Unless the fan assembly breaks, this is simply a mechanical phenomenon that you can live with.