Why Is My Refrigerator Running Constantly

Quick answer

A refrigerator running constantly may be due to a faulty thermostat, dirty condenser coils, or a failing compressor. Check for proper temperature settings, clean coils, and ensure the door seals tightly.

Confirm the symptom

• Refrigerator motor runs non-stop
• Interior temperature is not cooling properly
• Unusually loud or hot back of the fridge

Tools and prep

• Screwdriver set
• Thermometer
• Vacuum with brush attachment
• Work gloves
• Owner's manual
• Flashlight

Step-by-step troubleshooting

1. Check Temperature Settings
   Do: Verify the refrigerator and freezer temperature settings are correct (35–40°F for fridge, 0°F for freezer).
   Observe: If settings are too cold, the compressor may run longer.
   Means: Adjust settings to recommended levels.
   Next: Wait 24 hours and monitor performance.
2. Inspect Door Seals
   Do: Close the door on a piece of paper and try to pull it out.
   Observe: If the paper slides out easily, the seal is compromised.
   Means: Replace or repair damaged gaskets.
   Next: Test the fridge after replacing seals.
3. Clean Condenser Coils
   Do: Locate and clean the condenser coils (usually at the back or bottom of the fridge).
   Observe: Dust and debris on coils reduce efficiency.
   Means: Use a vacuum to remove dirt and debris.
   Next: Allow coils to dry completely before turning the fridge back on.
4. Test Thermostat
   Do: Use a thermometer to check if the fridge is maintaining the correct temperature despite the thermostat setting.
   Observe: If the temperature is incorrect, the thermostat may be faulty.
   Means: Replace the thermostat if necessary.
   Next: Monitor cooling performance after replacement.
5. Check for Obstructions
   Do: Ensure there is at least 2 inches of space around the fridge for proper airflow.
   Observe: Blocked airflow can cause the compressor to work harder.
   Means: Clear any obstructions and ensure the fridge is level.
   Next: Wait 24 hours and check if the issue persists.
6. Inspect Compressor
   Do: Listen for unusual noises from the compressor and feel if it is excessively hot.
   Observe: A failing compressor may run continuously without cooling effectively.
   Means: Consult a professional for compressor repair or replacement.
   Next: Seek professional help if the compressor is faulty.

Common causes

Parts matching

If you need to replace parts, match your refrigerator model to the correct components:

• Check the model number on the fridge for compatibility.
• Purchase OEM or high-quality aftermarket parts.
• Ensure the replacement part matches the original specifications.
• Consult the owner’s manual for part diagrams.
• Use a trusted supplier for reliable components.

Always turn off the refrigerator before replacing parts to ensure safety.

When to call a professional

• The compressor is making loud or unusual noises.
• The fridge is not cooling at all despite troubleshooting.
• You suspect a refrigerant leak (smell, frost on the exterior).
• The problem persists after replacing the thermostat and cleaning coils.
• The refrigerator is under warranty and DIY repairs may void it.

FAQ

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