How to check if the freezer is working?

Author: Clinton Lemke  |  Last update: Wednesday, October 8, 2025

The easiest way to diagnose a problem with your freezer's compressor is by listening for its routine humming sound. Pay attention to your freezer for at least 30 minutes. If the humming sound doesn't kick in within that time, the compressor may not be working correctly. Schedule a visit with a technician for more help.

What causes a freezer to stop freezing?

Cause: The freezer may not be receiving power due to a blown fuse, tripped circuit breaker, or unplugged cord. Fix: Check the power supply, reset the breaker, replace fuses, or ensure the freezer is plugged in. Cause: Airflow can be obstructed by items stored too close to the vents.

How to tell if the freezer is on?

Store an ice cube or two in a sealed plastic bag or small container in the freezer; a sealed bag/container is important so the ice cube doesn't evaporate and disappear. If the ice cube has melted down from its original shape, you'll know the power was off for an extended period of time.

How do I reset my freezer?

Use the following steps to reset your freezer:
  1. Unplug your freezer from the outlet.
  2. Turn the freezer's control panel off by adjusting the controls to zero or using a shut-off switch (consult your manual for instructions).
  3. Wait a few minutes.
  4. Plug the freezer back in.

How to check if a freezer compressor is working?

Your refrigerator compressor is responsible for that humming sound. So, if the sound stops for good, or if the sound goes from faint to a constant or very loud humming noise that does not shut off, it may be a sign the compressor is broken or malfunctioning.

Freezer Isn't Freezing — Freezer Troubleshooting

How can I test my freezer?

How To Test Your Walk-In Freezer
  1. Check the Temperature of the Freezer: The first step to testing your walk-in freezer is to check the temperature. ...
  2. Inspect Your Defrost System: ...
  3. Check Door Seals: ...
  4. Monitor Temperature Fluctuation: ...
  5. Clean the Freezer: ...
  6. Check the Fans: ...
  7. Seasonal Maintenance:

Will freezer work if compressor is bad?

If the compressor fails, the freezer won't freeze; listen for the compressor hum, if absent, consult a refrigeration technician for repair.

How do you diagnose a freezer problem?

HOW TO TROUBLESHOOT A FREEZER
  1. STEP 1: INSPECT POWER SOURCES. ...
  2. STEP 2: CHECK TEMPERATURE CONTROLS. ...
  3. STEP 3: REORGANIZE FOOD. ...
  4. STEP 4: MANAGE ICE BUILDUP. ...
  5. STEP 5: CLEAN THE CONDENSER COILS. ...
  6. STEP 6: CHECK THE DOOR SEAL. ...
  7. STEP 7: LISTEN FOR NOISES.

Can you reset a freezer compressor?

Shutting off the power to the refrigerator will give all of its systems—including the compressor—time to reset. Power down your refrigerator by unplugging it from the wall or shutting off the circuit breaker connected to the fridge. Leave the unit unplugged for five to ten minutes.

How to make sure the freezer is working?

The easiest way to diagnose a problem with your freezer's compressor is by listening for its routine humming sound. Pay attention to your freezer for at least 30 minutes. If the humming sound doesn't kick in within that time, the compressor may not be working correctly. Schedule a visit with a technician for more help.

How long to unplug a freezer to reset?

Reset your refrigerator: First, unplug it (or turn off the power at the circuit breaker), and then wait about five minutes for the electrical charge to clear out of it. Then, power it back on again.

How do you fix a freezer that doesn't freeze?

  1. Step 1: Check the setting controls. To be sure your appliance is set to the appropriate temperature, check your appliance's control settings. ...
  2. Step 2: Clear out the freezer shelves. ...
  3. Step 3: Clean the condenser coils. ...
  4. Step 4: Eliminate excess frost buildup.

What usually fails in a freezer?

Problems with the freezer's electronic control board, cold control thermostat, defrost timer, or compressor can all result in a freezer that does not run or runs improperly.

Can a freezer stop working but the fridge still works?

If your freezer stops cooling but the refrigerator compartment works, the freezer may have frost build-up or clogged venting preventing it from doing its job. Check the venting in the back of the freezer to make sure no items are resting against it, then examine the ice build-up inside the freezer.

How can I make my freezer freeze faster?

For fast or quick freezing large amounts of food in an upright or chest freezer, turn the temperature control to THE HIGHEST SETTING (for example: 7 is the highest setting on many models) or in some older models press the yellow FAST FREEZE switch. Freezing is generally fast and efficient throughout the freezer.

How to tell if a freezer compressor is bad?

These gases can pose a safety hazard and cause explosions, and certain refrigerators may even require welding during compressor replacement.
  1. Your Refrigerator Is Always Running. ...
  2. The Fridge Isn't Cool Enough. ...
  3. You Hear Unusual Noises. ...
  4. The Compressor Is Hot to the Touch. ...
  5. Your Circuit Breaker Keeps Tripping.

Where is the reset button on my compressor?

The location of the reset button on your compressor can vary depending on the model and manufacturer. Typically, it is located on the motor or near the motor housing. Look for a small red or black button that is often labeled “reset.”

What is the first thing to check when a refrigerator stops cooling?

Clear blocked air vents: Inspect the air vents inside the fridge and freezer compartments to ensure they are not obstructed by food or containers. Proper air circulation is vital for even cooling. Check the door seals: Inspect the rubber gaskets (door seals) around the refrigerator and freezer doors for damage.

How do I reset my freezer compressor?

Unplug the Refrigerator
  1. There may be whooshing or knocking noises, which is normal.
  2. Remain unplugged for 10 minutes.
  3. Plug the refrigerator in or turn on the circuit breaker.

How do you tell if your freezer is going out?

Food Going Off Before its Use-By Date
  1. The thermostat has given up the ghost and is refusing to chill out.
  2. Condenser coils are dusty - these are easy to clean once you know how to, but if in doubt we do recommend that you call in our repairs team.
  3. The motor is working overtime as the condenser coils are running too hot.

Is it worth fixing a freezer compressor?

Your compressor will usually last 8-10 years. If you start having issues with your compressor before this time frame, it might be worth looking into options for repair, but if it's hitting the average lifespan, it might be more worth it to replace entirely.

Why is my freezer not freezing?

Reasons your freezer isn't freezing may include:

Crowding items. Frost buildup. Dirty condenser coils. Malfunctioning evaporator fan.

What is the life expectancy of a freezer compressor?

On average, they can last between 8-10 years, which still varies. There are many variables such as the type of compressor and maintenance schedules that can affect compressor failure rates.

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