When a refrigerator starts clicking every few minutes, it usually signals trouble with one of the core electrical components. The clicking sound often comes from the overload protector, which switches the compressor on and off when there’s a power or temperature imbalance. Left unresolved, this issue can lead to food spoilage and permanent compressor failure. Understanding what causes this problem helps you decide when to troubleshoot and when to seek professional help.
Why the Overload Protector Keeps Tripping
The overload protector is a small thermal device designed to safeguard the compressor. It cuts off power if the compressor overheats or draws too much current. When it resets after cooling, it tries to start the compressor again, leading to the repeated clicking you hear. This cycle continues until the underlying problem is fixed.
In most cases, the overload protector trips because of one of the following: the compressor motor is overheating, the start relay is malfunctioning, or the system has excessive electrical resistance from dirty contacts or corroded connections. In simpler terms, the compressor struggles to start, overheats, and shuts down repeatedly.
We often see this when a fridge is pushed against the wall, restricting air circulation around the condenser coils. Without proper ventilation, the system overheats and triggers the protector.
Checking Airflow and Temperature Settings
The first and simplest step is to pull the fridge slightly away from the wall. Allow at least three inches of space behind it and one inch on each side. This gap ensures that warm air from the coils can escape freely.
Next, verify the temperature controls. Many users unknowingly turn the thermostat to the coldest setting, believing it will cool faster. Instead, the compressor works harder for longer, increasing heat buildup. Set the fridge compartment around 4°C and the freezer at -18°C for best efficiency.
Once airflow and temperature are corrected, listen again. If the clicking continues after several hours, the issue likely lies deeper within the electrical components.
Dirty or Blocked Condenser Coils
Dust and pet hair on the condenser coils make it difficult for the fridge to release heat. The compressor then runs hot and overloads. Cleaning the coils can prevent premature shutdowns.
Unplug the fridge, remove the grille or access panel at the bottom or back, and gently brush the coils using a soft brush or vacuum attachment. We recommend doing this every six months, especially if you have pets.
In colder months, Edmonton homes tend to trap indoor heat. That trapped warmth makes coil maintenance even more critical, since limited ventilation increases compressor strain. This small task often restores normal operation without needing major repairs.
Faulty Start Relay or Start Capacitor
If the compressor tries to start but clicks off after a few seconds, the start relay may be worn or burnt. The start relay provides the initial boost of power the compressor needs. When it fails, the compressor cannot start properly, triggering the overload protector each time.
You can test the relay with a multimeter for continuity. A reading of zero means the relay works; infinite resistance means it’s faulty. If you are unfamiliar with electrical testing, this is a task best left to professionals.
A bad start capacitor produces similar symptoms. The capacitor stores electrical energy for the compressor startup. When it weakens, the compressor hums but fails to run consistently. Replacing both components together is sometimes the most effective fix, given their close function.
Compressor Issues and Electrical Resistance
When neither the relay nor capacitor is at fault, the compressor itself may have developed internal damage. As compressors age, insulation within the motor windings can break down, creating higher electrical resistance. The result is overheating and tripping.
Unfortunately, compressor replacement is one of the costliest fridge repairs. Before assuming the worst, technicians typically test the compressor terminals for continuity and ground faults. A failed test confirms internal damage.
If this happens, replacing the fridge may be more practical than repairing it, depending on its age and energy efficiency.
Electrical Supply and Outlet Concerns
Sometimes, the issue isn’t inside the appliance at all. A weak power outlet or unstable voltage can also trigger the overload protector. Plug the fridge directly into a wall outlet, never into an extension cord or surge protector. These can restrict current flow and cause overheating.
Check that the power cord is firmly seated and free from visible damage. If lights flicker when the fridge clicks, have an electrician inspect the circuit. Consistent voltage supply is critical for heavy-duty appliances like refrigerators.
If your home has older wiring or other appliances sharing the same circuit, voltage drops may occur under load. This can mimic compressor issues but stems from the electrical system instead.
When to Call a Technician
If cleaning, adjusting temperature, and ensuring proper airflow don’t stop the clicking, it’s time for a professional inspection. Continuous tripping shortens compressor life and risks electrical damage.
We often find that homeowners wait too long before addressing the problem, assuming the sound is harmless. But repeated restarts can permanently damage both the relay and the compressor windings. A quick diagnostic visit usually prevents much costlier repairs later.
You can explore professional appliance repair services in Edmonton if the overload protector keeps tripping. Reliable technicians can pinpoint whether the issue lies in the start components, compressor, or wiring and handle it safely.
Preventive Maintenance for Long-Term Reliability
Regular maintenance reduces the risk of electrical stress. Beyond cleaning coils, check door seals for tight closure. Gaps allow warm air in, forcing the compressor to overwork. Clean the rubber gaskets with warm soapy water and dry them thoroughly.
Also, avoid overloading the fridge. Air must circulate between items to maintain even temperature distribution. Overcrowded shelves trap heat and increase compressor runtime.
Finally, make sure the fridge stands level. If it tilts forward, the doors may not seal properly, and internal components like the fan or compressor may run irregularly. Use a simple bubble level to adjust the front legs if needed.
Extra Tip: Listen for the Pattern
Not all clicks mean the same thing. Pay attention to the timing and rhythm. A single click every few minutes usually points to an overload protector cycling. Rapid clicking or irregular tapping may indicate a relay repeatedly engaging without success.
By noting these details before a technician visit, you can describe the behavior more accurately. That often speeds up diagnosis and helps the technician bring the correct parts on the first visit.
Environmental Factors in Edmonton Homes
Cold outdoor temperatures can also affect how fridges operate, especially in unheated garages or basements. If the surrounding temperature drops too low, the thermostat may misread conditions and fail to activate the compressor. This confuses the system and can cause short cycling with clicking sounds.
In winter, try to keep the fridge in a space where ambient temperature stays above 10°C. If that’s not possible, a small space heater placed safely nearby can stabilize performance. Modern fridges aren’t designed for extreme cold, even though the contents inside are meant to stay cold.
Energy Efficiency and Component Stress
A fridge that clicks frequently consumes more electricity because of the repeated power surges to start the compressor. Each failed start adds unnecessary strain to the electrical system.
Replacing worn components not only restores quiet operation but also reduces energy waste. An efficient fridge cycles smoothly, maintains temperature consistently, and runs quietly for most of the day. Listening for these subtle changes is one of the best indicators of appliance health.
If your refrigerator starts making clicking sounds again after previous repairs, the problem might have returned due to excessive voltage or poor airflow. Keep maintenance routines consistent to extend the lifespan of both mechanical and electrical parts.
The Role of Professional Diagnostics
Technicians use tools like clamp meters and continuity testers to confirm which part is causing the overload. They also check for refrigerant imbalances and compressor resistance, which are not visible to the untrained eye.
Many homeowners replace relays unnecessarily, only to find the problem persists. Without proper testing, it’s easy to overlook deeper electrical faults. Accurate diagnostics prevent wasted money on trial-and-error part replacements.
If you’re uncertain, it’s better to schedule a visit with a qualified repair team. You can contact us to arrange a diagnostic appointment and receive a clear explanation before any work begins.
Understanding the Noise Cycle
The overload protector clicks because of heat buildup, and each click resets the circuit. This noise will continue every few minutes until the compressor either runs normally or fails completely. That’s why it’s important not to ignore the pattern for too long.
If you unplug the fridge and let it sit for a few hours, the compressor may start again temporarily once cooled. However, this doesn’t fix the root cause. Treat this as a temporary reset, not a solution.
By addressing it early, you preserve both the compressor and food quality. The fewer times the protector trips, the lower the chance of permanent electrical damage.
Quick Safety Reminder
Never try to bypass or disable the overload protector. It prevents fires and electrical hazards. Any attempt to override it can cause severe damage to both the fridge and your home’s electrical system. Always unplug the unit before inspecting internal components.
If you’re unsure which part you’re handling, leave it to a professional. Safety and correct diagnosis always come before repair speed.
FAQ
Why does my fridge click every few minutes?
It clicks because the overload protector is cutting power to a struggling compressor. The protector resets after cooling, causing a repeated start-stop sound.
Can I keep using my fridge while it’s clicking?
You can, but it’s risky. Each restart puts stress on the compressor and may lead to total failure if not fixed quickly.
How can I tell if the start relay is bad?
If you hear a click followed by a hum, and the fridge shuts off within seconds, the relay may be faulty. A technician can confirm it using a multimeter.
Does room temperature affect my fridge performance?
Yes. Extremely cold or warm environments can confuse the thermostat and affect compressor cycling, especially in garages or basements.
Should I replace the overload protector myself?
It’s not recommended. Incorrect wiring or mismatched parts can cause electrical hazards. Have a professional handle it to ensure safe operation.