Is your freezer making a strange sound or loud noises? Is it so bad or annoying that it has you asking, “What’s that knocking at my freezer door?”. Well, first off, freezer noises are not so strange after all. In fact, clicking, bubbling, gurgling and knocking sounds are usual and common and may not lead to serious problems. However, not all sounds are created equal and some sounds may signal trouble. Here are 4 common freezer noises:
1. Clicking, Humming.
Possible causes: start relay or compressor. If the freezer is not getting cold and there’s a clicking or humming sound check the start relay which is mounted on the side of the compressor. The starter relay starts power and runs power to the compressor. If this part is not working, it can be replaced. If the clicking is coming from the compressor which is a motor that compresses the refrigerant and circulates it through the evaporator and condenser coils, then the compressor may be defective and will have to be replaced by a licensed repairman.
2. Bubbling, Gurgling, Knocking.
Possible causes: circulation of refrigerant, water draining during defrost cycles. Bubbling or gurgling sounds coming from the freezer is generally the sound of water or refrigerant running down the drain or refrigerant line. These sounds are normal and usually harmless.
Possible causes: defrost cycle or a leak. No frost freezers drip when defrosting. Freezer dripping sounds for the most part are normal, but if you have a leak inside or outside of the refrigerator it could be a clogged drain tube. Locate and check the defrost drain to make sure water is draining through the tube properly.
4. Loud banging.
Possible causes: evaporator fan, condenser motor, defrost timer motor, compressor motor. Loud banging noises coming from a freezer can signal broken parts and components in the motor. A licensed professional can help to locate the problem and the parts needed to fix the unit.