Fridge Makes Clicking Sound

Introduction

Hearing a clicking sound coming from your refrigerator can be unsettling. It’s a common issue that homeowners experience, and while it’s often not an immediate cause for panic, it shouldn’t be ignored. These clicks can indicate various problems, from minor component issues to potential compressor troubles. Identifying the source of the clicking and addressing it promptly can prevent further damage and potentially save you money on costly repairs or replacements down the road. It’s best to investigate as soon as you notice the clicking sound.

Common Causes of Fridge Makes Clicking Sound

Here are some of the most common reasons why your fridge might be making a clicking sound:

Start Relay: The start relay helps start the compressor. A faulty relay can click as it tries to engage the compressor.
Overload Protector: This device protects the compressor from overheating. If it’s malfunctioning, it can click on and off.
Compressor: A failing compressor itself can produce clicking sounds as it struggles to operate.
Defrost Timer: The defrost timer controls the defrost cycle. A faulty timer can click as it attempts to switch between cooling and defrosting.
Ice Maker: If your fridge has an ice maker, the clicking could be related to its operation, such as the water valve opening and closing.
Water Inlet Valve: Similar to the ice maker, the water inlet valve that supplies water to the fridge can click when opening or closing.
Control Board: In modern refrigerators, a malfunctioning control board can cause various components to click due to incorrect signals.
Door Switch: A faulty door switch may click each time the door is opened or closed.
Expansion Valve: The expansion valve regulates the flow of refrigerant, and clicking can occur if it is sticking or failing.

Symptoms Checklist

Use this checklist to help pinpoint the issue:

Clicking sound occurs frequently.
Clicking sound happens when the fridge is trying to start.
Clicking sound is accompanied by the fridge not cooling properly.
Clicking sound comes from the back of the fridge.
Clicking sound only happens during the defrost cycle.
Clicking is coming from the icemaker area.
The sound started after a power outage.
Clicking and the fridge light flickers when opening/closing the door.

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

Unplug the Fridge: Before doing anything, unplug the refrigerator from the power outlet for safety.
Locate the Compressor: The compressor is usually located at the back of the fridge, near the bottom. It’s a black, cylindrical or oval-shaped unit.
Inspect the Start Relay and Overload Protector: These components are often attached to the side of the compressor. Look for any signs of damage, such as bulging, cracks, or burnt smells.
Test the Start Relay: If you have a multimeter, you can test the start relay for continuity. If there’s no continuity, the relay is likely faulty. Note: Only experienced users should attempt this step.
Listen Closely: Plug the fridge back in briefly (while being ready to unplug immediately) and listen to pinpoint where the clicking is coming from.
Check the Defrost Timer: The defrost timer is often located behind the control panel inside the fridge or in the back of the fridge. Try advancing the timer manually to see if the clicking stops.
Examine the Ice Maker: If you have an ice maker, observe it during its cycle to see if the clicking is related to any of its components.
Inspect the Water Inlet Valve: Locate the water inlet valve (usually at the back of the fridge where the water line connects). Listen for the clicking sound coming from this area.
Check the Condenser Fan: Clean any dust or debris from the condenser fan (located near the compressor) to ensure it’s running freely. A blocked fan can cause the compressor to work harder and potentially click.
Examine the Door Switch: Open and close the fridge door repeatedly and listen for the clicking in that area.
Clean the Coils: Dirty condenser coils can cause the compressor to work harder, leading to clicking. Clean them using a vacuum cleaner with a brush attachment.
Listen During Defrost Cycle: If the clicking only happens during the defrost cycle, it could be related to the defrost heater or the defrost thermostat.
Check the Control Board (Advanced): For advanced users, inspect the control board for burnt components or signs of damage. If damaged, a replacement might be needed, but seek professional advice first.

Fix the Issue Without Buying Parts

Often, the clicking sound can be resolved without replacing parts:

Reset the Fridge: Unplug the fridge for 30 minutes, then plug it back in. This can sometimes reset the control board and resolve minor issues.
Clean the Condenser Coils: Dust and debris on the condenser coils can cause the compressor to overheat. Clean the coils with a vacuum cleaner.
Ensure Proper Ventilation: Make sure the fridge has enough space around it for proper airflow.
Check Door Seals: Ensure the door seals are clean and intact to prevent warm air from entering the fridge, which can cause the compressor to work harder.
Check Leveling: An improperly leveled fridge can cause stress on the components. Adjust the leveling feet at the bottom of the fridge.

When Replacement Might Be Necessary

In some cases, replacement of components might be necessary:

Start Relay/Overload Protector: If testing shows these components are faulty, they typically cost between $20-$50 USD to replace.
Defrost Timer: A faulty defrost timer can cost around $30-$70 USD to replace.
Compressor: Replacing the compressor is a major repair, often costing between $300-$800 USD, including labor. It is generally better to replace the fridge at this point.
Control Board: A new control board can range from $100 to $300 USD, depending on the fridge model.

Safety Warning

Always unplug the fridge before performing any maintenance or repairs.
Avoid touching electrical components with wet hands.
If you’re not comfortable working with electrical components, consult a qualified technician.
If you smell burning plastic, unplug the appliance immediately and call a professional.

Tools You May Need

Screwdrivers (Phillips and flathead)
Vacuum cleaner with brush attachment
Multimeter (optional, for testing electrical components)
Gloves
Adjustable Wrench

FAQ

Q: Why is my fridge clicking but still cooling? A: The clicking could be a sign of a component starting to fail. Monitor the temperature and consider investigating further.
Q: How do I know if the compressor is the problem? A: A failing compressor often makes a loud clicking sound and the fridge may not cool properly.
Q: Can a dirty fridge cause clicking sounds? A: Yes, dirty condenser coils can cause the compressor to work harder and potentially click.
Q: Is it safe to use the fridge if it’s clicking? A: It’s generally safe, but monitor the temperature and address the issue promptly to prevent further damage.
Q: Should I call a repairman immediately if I hear clicking? A: Not necessarily. Try the basic troubleshooting steps first.

Conclusion

Troubleshooting a clicking sound in your refrigerator can seem daunting, but by following these steps, you can often identify and resolve the issue yourself. Start with the simplest solutions, such as cleaning the coils and resetting the fridge. If the clicking persists and you suspect a more serious problem, don’t hesitate to consult a qualified appliance repair technician. Addressing the issue early can prevent further damage and extend the life of your fridge.