Freezer Coils Not Getting Cold

Introduction

When your freezer coils aren’t getting cold, it means your freezer isn’t doing its job. Food can spoil, ice cream melts, and you’re left with a frustrating mess. This usually happens when there’s a problem with the freezer’s cooling system. Addressing this quickly can save you money and prevent food waste. Let’s troubleshoot this problem together!

Common Causes of Freezer Coils Not Getting Cold

Here are some common reasons why your freezer coils might not be getting cold:

• Frost Buildup: Excessive frost can insulate the coils, preventing them from cooling effectively.
• Dirty Condenser Coils: Dust and debris on the condenser coils (usually at the back or bottom of the freezer) hinder heat release.
• Faulty Start Relay: This part helps start the compressor. If it fails, the compressor won’t run, and the coils won’t cool.
• Compressor Problems: The compressor is the heart of the cooling system. If it’s failing, the coils won’t get cold.
• Damaged Door Seal: A bad seal lets warm air in, forcing the freezer to work harder and potentially leading to coil issues.
• Blocked Air Vents: In frost-free freezers, blocked vents prevent cold air from circulating properly.
• Defrost System Failure: If the defrost system isn’t working, frost builds up on the coils.
• Damaged Evaporator Fan Motor: This fan circulates air over the evaporator coils, distributing the cold.

Symptoms Checklist

Here are signs that indicate your freezer coils are likely not getting cold:

• The freezer feels warm inside, or the temperature is above freezing.
• Food is thawing or not freezing properly.
• You notice excessive frost buildup on the back panel of the freezer.
• The compressor isn’t running or is cycling on and off frequently.
• The freezer is running constantly but not getting cold enough.
• You hear unusual noises coming from the freezer.

How to Fix Freezer Coils Not Getting Cold Step-by-Step Guide

Follow these steps to troubleshoot your freezer:

1. Unplug the Freezer: For safety, always unplug the freezer before you start working on it.
2. Check the Door Seal: Inspect the door seal for damage or gaps. Clean it with warm, soapy water. Test the seal by closing the door on a piece of paper. If you can easily pull the paper out, the seal is likely bad.
3. Defrost the Freezer: If there’s excessive frost, manually defrost the freezer. Unplug it and leave the door open. Place towels inside to absorb melting ice. Don’t use sharp objects to scrape ice, as you could damage the freezer.
4. Clean the Condenser Coils: Locate the condenser coils (usually on the back or bottom). Use a vacuum cleaner with a brush attachment to remove dust and debris.
5. Check the Evaporator Fan: Locate the evaporator fan (usually behind a panel inside the freezer). Make sure it’s not blocked by ice or debris. Manually spin the fan blade to see if it spins freely. If it’s stiff or doesn’t spin, the fan motor might be faulty.
6. Inspect the Air Vents: In frost-free freezers, check the air vents inside the freezer and make sure they’re not blocked by food or ice.
7. Listen to the Compressor: The compressor is usually located at the back of the freezer. Listen to see if it’s running. If it’s making unusual noises (clicking, buzzing) or not running at all, it could be failing.
8. Check the Overload Protector and Start Relay: These are small components attached to the compressor. A multimeter can be used to test their functionality, but this step might require more technical knowledge. If unsure, skip this step.
9. Check the Defrost Timer/Control Board: In mechanical defrost systems, the defrost timer can fail. In newer models with electronic control boards, the board might be malfunctioning.
10. Plug the Freezer Back In: After completing these steps, plug the freezer back in and allow it to run for 24 hours to see if the problem is resolved.

Fix the Issue Without Buying Parts

Before considering replacement parts, try these free methods:

• Reset: Unplug the freezer for 30 minutes to reset the system.
• Cleaning: Regularly clean the condenser coils and door seal.
• Recalibration (if applicable): Some freezers have temperature calibration settings. Consult your owner’s manual.
• Inspection Tips: Regularly inspect the freezer for signs of frost buildup or damage.
• Maintenance Basics: Avoid overfilling the freezer, which can restrict airflow.

When Replacement Might Be Necessary

If the compressor is faulty, the evaporator fan motor is completely dead, or the control board is malfunctioning, replacement might be necessary. Compressor replacement can be complex and expensive. Evaporator fan motors typically cost $50-$150, while control boards can range from $100-$300. Consider the age and value of your freezer before investing in major repairs. Start relay can be around $20-$50. For more related activities, check out our Freezer Leaking Water Outside.

Safety Warning

• Always unplug the freezer before performing any repairs.
• Avoid touching electrical components with wet hands.
• If you’re uncomfortable working with electrical appliances, consult a qualified technician.
• Be careful when handling sharp tools.

Tools You May Need

• Screwdrivers (Phillips and flathead)
• Vacuum cleaner with brush attachment
• Warm, soapy water and a cloth
• Towel
• Multimeter (optional, for testing electrical components)

FAQ

Here are some frequently asked questions about freezer coil problems:

• Q: How do I know if my compressor is bad? A: Signs of a bad compressor include unusual noises, failure to start, or the freezer not getting cold despite running.
• Q: How often should I clean my condenser coils? A: Clean the condenser coils every 6 months to a year.
• Q: Can a dirty door seal cause the freezer coils to not get cold? A: Yes, a bad seal lets warm air in, which increases the workload on the freezer and can lead to coil problems.
• Q: What does a start relay do? A: It gives the compressor a boost of power to start its cycle.

Conclusion

Troubleshooting freezer coil issues can seem daunting, but with a systematic approach, you can often identify and resolve the problem yourself. Start with the simplest solutions, like defrosting and cleaning. If the issue persists, consider more complex checks. By tackling these steps, you can avoid expensive repairs. If you’ve exhausted all options and the freezer still isn’t working, then it’s time to call a qualified appliance repair technician.