Clicking Sound Fridge Compressor

Introduction

A clicking sound coming from your fridge compressor can be quite alarming and indicate a problem with one of your home’s most important appliances. This clicking is usually a sign that the compressor is struggling to start or is experiencing electrical issues. Ignoring this problem can lead to the compressor failing completely, resulting in a warm fridge, spoiled food, and costly repairs. Addressing the clicking sound quickly can often prevent a major breakdown and save you money. Let’s get started with some common causes and how to troubleshoot them.

Common Causes of Clicking Sound Fridge Compressor

Several factors can cause a clicking sound in your fridge compressor:

• Failed Start Relay: The start relay helps the compressor motor start. If it’s faulty, it can cause a clicking as it tries unsuccessfully to energize the compressor.
• Overload Protector Tripping: The overload protector shuts down the compressor if it overheats. Repeated clicking could mean it’s overheating and tripping frequently.
• Hard Starting Compressor: An aging compressor may struggle to start, resulting in clicking sounds as it attempts to run.
• Electrical Issues: Loose wiring, a faulty capacitor, or a problem with the power supply can prevent the compressor from starting properly, leading to clicking.
• Dirty Condenser Coils: Dirty coils reduce the fridge’s efficiency, causing the compressor to work harder and potentially overheat, leading to clicking.
• Voltage Problems: Fluctuations in your home’s electrical voltage can prevent the compressor from starting or running smoothly, causing it to click.
• Worn-Out Compressor: As the compressor ages, internal components can wear out, causing it to make unusual noises, including clicking.
• Frozen Evaporator Coils: Ice buildup on the evaporator coils can restrict airflow and cause the compressor to overwork and make clicking noises.

Symptoms Checklist

Check for these indicators to identify the issue accurately:

• Clicking sound coming from the back of the fridge.
• Fridge is not cooling properly.
• Food is spoiling faster than usual.
• The back of the fridge feels unusually hot.
• The compressor starts and stops frequently.
• The clicking sound is accompanied by a buzzing or humming noise.
• The fridges interior light is working, but the compressor isnt running.

How to Fix Clicking Sound Fridge Compressor Step-by-Step Guide

Follow these steps to troubleshoot the clicking sound:

1. Unplug the Fridge: For safety, always unplug the refrigerator from the power outlet before starting any inspection or repair.
2. Locate the Compressor: The compressor is usually located at the back of the fridge, near the bottom. It’s a black, round or oval-shaped unit.
3. Inspect the Start Relay and Overload Protector: These are usually housed in a small plastic cover attached to the compressor. Gently remove the cover.
4. Visually Inspect the Relay and Protector: Look for any signs of burning, melting, or physical damage. If you see any, they may need replacement (see “When Replacement Might Be Necessary”).
5. Check Wiring Connections: Ensure all wires connected to the compressor, start relay, and overload protector are secure. Loose connections can cause clicking.
6. Clean the Condenser Coils: Located on the back or bottom of the fridge, clean the coils with a vacuum cleaner and brush to remove dust and debris.
7. Check the Voltage: Use a multimeter to check the voltage at the outlet where the fridge is plugged in. It should be within the specified range (usually 110-120V in the US).
8. Defrost the Fridge (If Necessary): If you suspect frozen evaporator coils, manually defrost the fridge for 24 hours. Remove all food and leave the door open.
9. Reset the Fridge: After checking the above, plug the fridge back in. Sometimes a simple reset is all that’s needed.
10. Listen Carefully: After plugging it in, listen to see if the clicking sound persists.
11. Observe the Fridges Performance: After running for a few hours, check if the fridge is cooling properly.
12. Monitor for Overheating: After a few hours of operation, carefully feel the compressor. It should not be excessively hot to the touch.

Fix the Issue Without Buying Parts

Here are some free methods to try:

• Reset the Fridge: Unplug the fridge for 30 minutes and then plug it back in. This can sometimes reset the compressor.
• Cleaning: Regularly clean the condenser coils to improve efficiency and prevent overheating.
• Voltage Check: Make sure your home’s voltage is stable to avoid issues with the compressor starting.
• Inspection Tips: Regularly inspect the back of the fridge for dust buildup and clear any obstructions that may be preventing proper ventilation.
• Maintenance Basics: Ensure the fridge is level and not overcrowded to promote proper airflow.

When Replacement Might Be Necessary

If the clicking persists after trying the above steps, the start relay, overload protector, or the compressor itself may need replacement. Replacing the start relay or overload protector is generally less expensive (around $20-$50 USD each). However, replacing the compressor is a major repair, typically costing between $300-$700 USD, including labor. Common failing parts include the start relay, overload protector, and the compressor motor itself. For more related activities, check out our Fridge Leaking Water Inside Top Shelf.

Safety Warning

• Always unplug the fridge before performing any maintenance or repairs.
• Avoid touching any electrical components with wet hands.
• Be careful when handling sharp tools or removing the back panel.
• If you are not comfortable working with electrical components, consult a qualified technician.

Tools You May Need

• Screwdriver (Phillips and flathead)
• Vacuum cleaner with brush attachment
• Multimeter (for checking voltage)
• Pliers
• Gloves

FAQ

Here are some common questions and answers:

• Q: Why is my fridge clicking but still running? A: It could be a sign that the compressor is struggling to start and may fail soon.
• Q: How do I know if the start relay is bad? A: Visually inspect it for burning or melting. You can also test it with a multimeter for continuity.
• Q: Can a dirty fridge cause the compressor to click? A: Yes, dirty condenser coils can cause the compressor to overheat and click.
• Q: Is it safe to run a fridge that’s clicking? A: It’s not recommended, as it could lead to further damage and potential fire hazards.
• Q: How often should I clean my fridge’s condenser coils? A: At least every six months, or more often if you have pets.
• Q: Should I try replacing the start relay myself? A: If you’re comfortable working with electrical components and have the right tools, it’s a relatively straightforward repair. Otherwise, call a technician.

Conclusion

Troubleshooting a clicking fridge compressor can seem daunting, but by following these steps, you can often identify and resolve the issue yourself. Remember to prioritize safety and take your time. If the problem persists or you are uncomfortable performing these tasks, it’s best to call a qualified appliance technician. Addressing the issue promptly can save you from more costly repairs and keep your food fresh. Good luck!

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