Whirlpool Refrigerator Freezer Not Cooling – A DIY Troubleshooting

ByJim Boslice Home & Kitchen

If your appliance isn’t freezing, first check if the condenser coils are dirty or if the evaporator fan is obstructed by ice buildup.

Often, a simple cleaning or a manual defrost cycle can resolve the issue without needing expensive professional repairs.

You rely on your kitchen appliances to keep your food fresh and your household running smoothly. There is nothing worse than waking up to a puddle on the floor or realizing your frozen goods have started to thaw.

When you notice your whirlpool refrigerator freezer not cooling, it is easy to panic about the cost of a replacement. The good news is that many common cooling failures are mechanical issues you can diagnose and fix with basic tools from your workshop.

In this guide, we will walk through the diagnostic process just like we would in a professional repair shop. We’ll cover everything from simple airflow obstructions to electrical component testing, ensuring you have the confidence to get your unit back in working order.

Common Causes for a Whirlpool Refrigerator Freezer Not Cooling

The most frequent reason for a whirlpool refrigerator freezer not cooling is restricted airflow or a buildup of debris. Before you start pulling apart the internal panels, you need to look at the “lungs” of your refrigerator: the condenser coils.

When these coils get clogged with dust, pet hair, or grease, the refrigerator cannot release heat efficiently. This forces the compressor to run constantly, which eventually leads to a complete cooling failure.

Grab a vacuum with a brush attachment or a long-handled coil brush. Pull the unit away from the wall, remove the lower back panel, and gently scrub the coils until they are clean.

Checking the Evaporator Fan and Airflow

If your coils are clean but the unit is still warm, the issue might be inside the freezer compartment. The evaporator fan is responsible for pulling air across the cooling coils and circulating it throughout the fridge.

If you cannot hear the fan running when the door is closed, or if you feel very little airflow inside the freezer, the fan motor might be seized or the blade might be blocked by ice. Sometimes, a simple defrosting session—where you turn the unit off and leave the doors open for 24 hours—is enough to clear a stubborn ice blockage.

If the fan remains silent after a manual defrost, you may need to access the rear panel of the freezer to inspect the motor for continuity using a multimeter. A faulty motor is a common and relatively inexpensive part to replace.

Understanding the Start Relay and Compressor

The compressor is the heart of your cooling system, and the start relay is the switch that tells it to turn on. If your compressor is clicking on and off rapidly, or if it isn’t running at all, the start relay is a prime suspect.

You can often diagnose this by listening near the back of the fridge. If you hear a distinct “click” followed by silence, the compressor is trying to start but failing.

Always unplug the unit before touching any electrical components. You can remove the start relay and shake it; if it rattles like a box of loose change, it is almost certainly burnt out and needs to be replaced.

Deep Dive: Troubleshooting the Thermostat and Control Board

If the mechanical parts seem to be in order, the problem might be the “brain” of the appliance. The temperature control thermostat sends signals to the compressor to cycle on and off based on the internal temp.

If the thermostat is faulty, it may never signal the system to start cooling. You can test this by turning the dial to the coldest setting and seeing if the compressor kicks in.

For more modern units, a faulty electronic control board can also cause these issues. While these are more complex to diagnose, they are usually plug-and-play modules that any DIYer with a screwdriver can swap out.

When to Call a Professional

While we encourage DIY repairs, safety always comes first. If you encounter a sealed system leak—where you hear a hissing sound or see oily residue on the tubing—do not attempt to cut or weld the lines.

Refrigerant gas is under high pressure and requires specialized equipment to handle. Attempting to repair a leak yourself can be dangerous and is often prohibited by environmental regulations.

If you have performed the basic troubleshooting steps and the fridge still won’t cool, don’t feel defeated. Knowing when to call a professional is a mark of an experienced workshop owner who values both safety and long-term results.

Frequently Asked Questions About Whirlpool Refrigerator Freezer Not Cooling

How do I know if my compressor is dead?

If the compressor is extremely hot to the touch and makes a buzzing or clicking sound but never actually runs, it may be failing. A multimeter test for continuity on the compressor pins can confirm if the internal windings are intact.

Can a dirty condenser coil stop the freezer from cooling?

Absolutely. If the coils are coated in dust, the heat transfer process is insulated, causing the system to overheat and shut down to protect the compressor. Keeping these clean is the best preventive maintenance you can perform.

How long should I wait after a manual defrost?

For a full manual defrost, we recommend leaving the doors open for at least 24 hours to ensure all hidden ice buildup behind the interior panels has melted. Use a fan to speed up the process, but never use a heat gun or blowtorch, as you risk melting the plastic liner.

Where is the start relay located?

The start relay is typically located on the side of the compressor, which you can access by removing the rear access panel at the bottom of the refrigerator.

Final Thoughts on Your Repair Journey

Tackling a whirlpool refrigerator freezer not cooling is a rite of passage for any garage tinkerer. By methodically checking the coils, fans, and electrical components, you save money and gain a deeper understanding of how your home appliances function.

Remember to take photos as you disassemble parts—it makes the reassembly process much smoother. If you get stuck, consult your specific model’s service manual, which is usually available online with a quick search of your unit’s serial number.

You have the tools and the patience to handle this. Take your time, stay safe, and enjoy the satisfaction of a successful repair. Your workshop skills are an investment that pays off every time you fix something instead of throwing it away.

Jim Boslice
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