Fan Blade – If the refrigerator is noisy or loud, especially when the door is opened, either the evaporator or condenser fan blade may be at fault. First, turn the evaporator fan blade by hand. If the fan blade does not turn freely, check to see if the blade is rubbing against something or if something is caught in the blade. Additionally, check the condenser fan blade to determine if it has any obstructions.
Evaporator Fan Motor – When the evaporator fan motor fails, it often generates a lot of noise. This noise will be much louder when the refrigerator door is opened. If the evaporator fan is noisy, replace it.
Condenser Fan Motor – There might be something caught in the condenser fan motor blade, or the condenser fan motor bearings might be defective. The condenser fan motor is usually located underneath the refrigerator near the back. Pull the refrigerator out from the wall and remove the access panel to access it.
Compressor – If the noise is coming from the compressor, the compressor might be wearing out. As the compressor wears out over time, it generates more noise than usual. Compressors often last for years after they become noisy. However, if your compressor is noisy, be aware that it is likely to fail. Your compressor must be replaced by a licensed technician.
Water Inlet Valve – If the refrigerator is noisy or loud, particularly when the ice maker is filling, the water inlet valve might be at fault. The water inlet valve is an electrically-controlled valve that opens to supply water to the refrigerator dispenser and icemaker. Over time, mineral deposits can accumulate inside the valve and restrict the water flow. If the water inlet valve is noisy or loud, replace it. Do not attempt to repair the water inlet valve—disassembling the valve can cause the valve to fail.