A knocking sound coming from the compressor of a refrigerator is often a sign of a mechanical issue. The sound is usually caused by a problem with the compressor’s internal parts, such as the connecting rod or crankshaft. Here are some common causes of a knocking sound in a refrigerator compressor:
- Loose or worn parts: If the compressor’s internal parts are loose or worn, they can create a knocking sound as they move around.
- Lack of lubrication: The compressor relies on lubrication to keep its internal parts moving smoothly. If the lubrication is not sufficient, the parts can create a knocking sound as they rub against each other.
- Overheating: A compressor that is overheating can create a knocking sound as the internal parts expand and contract due to the heat.
- Restricted oil flow: If the compressor’s oil flow is restricted, the internal parts can create a knocking sound as they struggle to move.
- Dirty condenser coils: If the condenser coils are dirty, the compressor has to work harder to remove the heat, which can also cause knocking sound.
If you hear a knocking sound coming from your refrigerator compressor, it’s important to have it checked by a qualified technician as soon as possible. Continuing to use a compressor that is making a knocking sound can lead to further damage and a shortened lifespan of the compressor.
Is it normal for fridge compressor to make noise?
It is not uncommon for a refrigerator compressor to make some noise during operation. The noise can be caused by the compressor’s internal parts moving, the refrigerant flowing, or the fan that cools the compressor. However, a refrigerator compressor should not make excessive or abnormal noise, such as a loud or persistent knocking sound, that can be heard from another room.
If the compressor is making a loud or unusual noise, it could be an indication of a problem, such as a loose or worn part, a lack of lubrication, or a restriction in the refrigerant flow. It’s important to have it checked by a qualified technician to determine the cause of the noise and to ensure that the compressor is operating efficiently and safely.
It’s also important to consider the environment where the refrigerator is located, as some noise can be normal when the compressor is running, but excessive noise can be a sign of a malfunctioning unit.
In summary, some noise is normal when the compressor is running, but excessive noise or knocking sound can be a sign of a problem and should be checked by a qualified technician.