Single click every few minutes from the lower rear
You hear a click, maybe a short hum, then silence. The cabinet gets warmer instead of colder.
Start here: Start with the compressor area and condenser coil checks.
Refrigerator cooling failure
KitchenAid Refrigerator Clicking but Not Cooling
Direct answer: When a KitchenAid refrigerator is clicking but not cooling, the first thing to figure out is where the click is coming from. A repeated click from the back every few minutes with little or no compressor hum often points to a refrigerator compressor start relay problem. If the unit runs but air is not moving well, dirty condenser coils, a stalled refrigerator evaporator fan, or heavy frost buildup are more likely.
Most likely: Most often, this is either a failed refrigerator compressor start relay/overload or badly restricted airflow from dirty condenser coils or frost-packed evaporator cover vents.
Start with the easy visual checks: confirm the outlet is solid, listen for the exact click location, look for fan movement, and check for frost on the back wall inside. Reality check: once a refrigerator has been warm for hours, it can take a full day to recover after the real problem is fixed. Common wrong move: scraping ice with a knife or screwdriver and puncturing a liner or hidden coil.
Don’t start with: Do not start by ordering a compressor or refrigerator control board. Those are expensive guesses, and the click pattern usually gives you a better answer first.
Click from the back every few minutesSuspect a refrigerator compressor start relay before anything else.
Freezer back wall frosted overThink airflow and defrost trouble, not a compressor failure first.
Last reviewed: 2026-04-17
What the clicking sounds like matters here
Rapid clicking near the controls or top section
The click is lighter and more frequent, and interior lights may still work normally.
Start here: Check power quality, reset the controls, and rule out a fan or defrost issue before blaming electronics.
Clicking with heavy frost on the freezer back wall
The freezer may still be somewhat cold, but the fresh-food side is warming up and airflow is weak.
Start here: Go straight to the frost and airflow check.
Clicking plus a fan noise that comes and goes
You hear a fan trying to run, sometimes rubbing or stalling, while temperatures climb.
Start here: Check for blocked vents, ice around the evaporator fan area, and dirty condenser coils.
Most likely causes
1. Failed refrigerator compressor start relay or overload
This is the classic pattern when the refrigerator clicks, tries to start, then shuts back off without cooling. The compressor may be warm or hot, but it never settles into a steady hum.
Quick check: Pull the unit out, listen at the lower rear, and note whether each click is followed by only a brief hum instead of continuous running.
2. Dirty condenser coils causing high heat and hard starting
When the condenser coils are packed with dust and pet hair, the compressor runs hot and may trip off on overload. Cooling falls off in both sections.
Quick check: Look underneath or behind the lower rear cover for a felt-like layer of dust on the coils and around the condenser fan area.
3. Evaporator frost buildup blocking airflow
If the freezer back wall is snowy or solid with frost, cold air cannot move properly. That often shows up as a warm refrigerator section first, then broader cooling loss.
Quick check: Open the freezer and inspect the rear interior panel for heavy frost or ice buildup.
4. Refrigerator evaporator fan motor not moving air
The sealed system may still be making cold, but without the evaporator fan, that cold air does not circulate through the cabinet. You may hear clicking from ice interference or a stalled motor.
Quick check: Open the freezer door, then press the door switch and listen for a steady fan sound from inside the freezer.
Step-by-step fix
Step 1: Confirm power and narrow down the click location
A refrigerator with weak power, a loose plug, or a tripped outlet can act dead or click without ever getting into a normal cooling cycle. You also need to separate a lower-rear compressor click from an interior fan or frost problem.
- Make sure the refrigerator plug is fully seated in the outlet and not loose from being pushed back.
- If the refrigerator is on a power strip or extension cord, unplug it and connect it directly to a wall outlet.
- Check whether the interior lights come on and whether the display responds normally.
- Stand by the lower rear of the refrigerator for several minutes and listen for the click source.
- Open the freezer door and press the door switch to see whether an interior fan starts.
Next move: If the refrigerator starts running normally after correcting the plug or outlet setup, monitor temperatures for the next 24 hours. If the click clearly comes from the lower rear and the compressor never settles into a steady hum, move to the coil and compressor-start checks.
What to conclude: You are separating a simple power issue from a true cooling failure and identifying whether the problem is at the compressor area or inside the cabinet.
Stop if:
- The outlet shows signs of heat damage, arcing, or a burnt smell.
- The power cord is damaged or pinched.
- You are not comfortable pulling the refrigerator out safely.
Step 2: Clean the condenser area and look for overheating
Dirty condenser coils are one of the most common reasons a refrigerator runs hot, cools poorly, and starts clicking off on overload. This is a safe first correction and often changes the symptom quickly.
- Unplug the refrigerator.
- Pull it out far enough to access the lower rear or toe-kick area, depending on where the coils are exposed.
- Vacuum loose dust and pet hair from the condenser coils, condenser fan area, and lower rear compartment.
- Use a soft coil brush carefully if dust is packed deep in the fins.
- Make sure nothing is blocking the condenser fan blade.
- Plug the refrigerator back in and listen for a steadier run cycle over the next 10 to 15 minutes.
Next move: If the clicking stops and the compressor and fan run steadily, let the refrigerator recover. Expect several hours before temperatures improve and up to 24 hours for full pull-down. If it still clicks from the lower rear and quits, the compressor start components are more suspect. If the freezer back wall is frosted, go to the frost check next.
What to conclude: A filthy condenser can create a hard-start condition all by itself. If cleaning changes nothing, you have ruled out the easiest common cause.
Step 3: Check for frost-packed airflow problems inside the freezer
A refrigerator can click and still fail to cool properly because the evaporator area is iced over. That blocks airflow and can also interfere with the evaporator fan.
- Open the freezer and inspect the rear interior panel.
- Look for a light even frost versus heavy snow, solid ice, or frost pushing out around vents.
- Press the freezer door switch and listen for the evaporator fan.
- Feel for airflow at the vents leading into the fresh-food section.
- If the back wall is heavily iced, unplug the refrigerator and leave the doors open long enough to fully thaw the ice before restarting.
Next move: If airflow returns after a full thaw and the refrigerator cools again, you likely have a defrost-related problem that needs further diagnosis if the frost comes back. If there is no heavy frost and no airflow even after thawing, the refrigerator evaporator fan motor becomes more likely. If both sections stay warm and the click is still from the rear, return to the compressor-start branch.
Step 4: Watch the compressor start attempt
This is the clearest homeowner check for a bad refrigerator compressor start relay. You are listening for a short failed start attempt versus a normal continuous run.
- Unplug the refrigerator for 5 minutes to let the overload cool.
- Plug it back in and stand at the lower rear near the compressor.
- Listen for a click followed by a brief hum of a few seconds, then another click and silence.
- Touch the compressor carefully with the back of your fingers only after it has tried to start; note whether it is just warm or very hot.
- If the pattern repeats every few minutes and the compressor never stays running, suspect the refrigerator compressor start relay/overload.
Next move: If the compressor starts and stays running with a steady hum, keep the refrigerator plugged in and monitor cooling. The earlier issue may have been heat-related from dirty coils or poor ventilation. If it repeatedly clicks and drops out, replacing the refrigerator compressor start relay is the most reasonable DIY part path. If a new relay does not change the symptom, stop and call for service because the compressor or sealed system may be failing.
Step 5: Make the repair call based on what you found
By now you should know whether this is a simple airflow problem, a likely start-relay failure, or something that needs a pro before more money gets spent.
- If cleaning the condenser fixed the issue, reinstall covers, slide the refrigerator back with proper clearance, and monitor temperatures with a thermometer.
- If the freezer was iced over and airflow returned after thawing, use the refrigerator but watch for frost returning on the back wall over the next several days.
- If the compressor has the repeated click-hum-click pattern and never stays running, replace the refrigerator compressor start relay/overload.
- If the freezer has no airflow and no heavy frost after thawing, plan on a refrigerator evaporator fan motor repair.
- If a new start relay does not get the compressor running, stop there and schedule service for compressor or sealed-system diagnosis.
A good result: Once the right fix is made, the compressor should run steadily, airflow should be obvious, and temperatures should trend down over the next several hours.
If not: If both sections remain warm after the relay and airflow checks, the problem is beyond safe basic DIY and needs professional sealed-system or electrical diagnosis.
What to conclude: This keeps you from guessing at expensive parts. The practical homeowner repairs here are cleaning, thawing, and a supported start-relay or evaporator-fan replacement path.
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FAQ
Why does my refrigerator click every few minutes and stay warm?
That usually means the compressor is trying to start, failing, and dropping back out on overload. A bad refrigerator compressor start relay is common, but dirty condenser coils or an overheating compressor can create the same pattern.
Can dirty condenser coils really cause clicking and no cooling?
Yes. When the condenser coils are packed with dust, the compressor runs hotter and may trip off instead of staying running. It is one of the first things worth checking because it is common and safe to correct.
If the freezer is cold but the fridge is warm, is this the same problem?
Not always. That pattern more often points to blocked airflow, heavy frost on the evaporator cover, or a failed refrigerator evaporator fan motor rather than a compressor start problem.
Should I replace the refrigerator control board if it is clicking?
Not first. On this symptom, a control board is a much weaker guess than a start relay, airflow problem, or frost-packed evaporator. Get the click location and cooling pattern nailed down before spending money there.
How long should it take to cool again after I fix it?
You should usually hear steadier running and feel better airflow right away, but food-safe temperatures take longer. Give it several hours to start recovering and up to 24 hours to fully stabilize after a real repair.
What if I replace the start relay and it still just clicks?
Stop there and call for service. If a known-good refrigerator compressor start relay does not get the compressor running, the compressor itself or the sealed system is a more likely problem, and that is not a basic DIY repair.