If the knocking noise is coming from inside the refrigerator, and it is accompanied by a warmer than usual temperature in the interior, then this is probably the case. The evaporator fan is responsible for distributing the cold air throughout your refrigerator.
The fan motor itself may also be malfunctioning; there may be something obstructing the evaporator fan, or the fan blade may be bent out of shape and is hitting something which is causing the knocking sound. If the evaporator fan is dirty, just take it off and remove all of the gunk out with a brush.
Try to spin it a few times, there may be something caught around the fan that is preventing it from spinning properly. Warning: Do not submerge the evaporator fan in water as there are electronic parts inside it. It will just come out unbalanced and will still make a banging sound.
You should replace the evaporator fan right away. They can also check for loose parts inside the evaporator fan. If the s knocking noise is coming from the back of the refrigerator, then it may be the condenser fan that is causing the issue.
Since these coils get hot, they need to be cooled somehow. In older refrigerator models, the condenser coils are air-cooled, hence why they are exposed at the back of the fridge. For newer no frost refrigerators, the condenser is hidden at the back of the fridge, which necessitates the help of a fan to cool it down. A loud knocking or banging sound from the pipes supplying water to the refrigerator could be a water hammer.
A water hammer happens when water is forced to change direction rapidly in a high-pressure water line. This is called hydraulic shock and could be happening when the water is in use for creating ice cubes and dispensing water. It can also happen any time your water is turned on or off, like when your washer fills. Water hammers can be damaging and lead to leaks and other repairs. You are commenting using your WordPress. You are commenting using your Google account.
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Notify me of new posts via email. Menu Skip to content. About Email newsletter sign-up Warning! Before starting any repair. Read more Condenser Fan Motor or Blade.
Evaporator Fan Motor or Blade. Like this: Like Loading How do I reset my refrigerator compressor? How to Reset the Compressor on a Fridge Locate the refrigerator power cord on the back of the appliance.
Disconnect the power cord from the wall outlet. Turn both the fridge and freezer controls to "Off" or "0" inside the fridge. Adjust the fridge and freezer controls to the desired setting. Allow the fridge up to one day to adjust to a stable temperature.
How do you know if your refrigerator is dying? Your freezer is too cold. You can hear the motor. The back of the fridge feels hot. Your electric bill goes up unexpectedly. You're seeing condensation or frost. You have the fridge-repair guy on speed dial. Your fridge is more than 10 years old. Why does my Samsung refrigerator make a popping noise?
The plastic parts of the refrigerator contract and expand as the temperature of the refrigerator rises and falls, causing cracking noises. This usually happens during the defrosting cycle and is much more common in new refrigerators as they acclimate to their new home's humidity and temperature levels. Can a noisy fridge cause a fire? Witnesses described hearing one distressed resident apparently telling neighbours his faulty fridge caused the blaze.
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