How to tell Sub-Zero refrigerator is broken

How To Tell If Your Sub-Zero Refrigerator Is Broken

Posted February 4, 2021 in Sub-Zero Refrigerator Repair by Steven M

Keeping your Sub-Zero refrigerator well maintained is an easy way to prevent more serious issues from creeping up on you when you least expect it.

However, if your fridge does require any serious repairs, how can you tell if your Sub-Zero refrigerator is broken?

Below, we’ll go over a few tips to help you troubleshoot and find out if your fridge is working as efficiently as it should be.

When in doubt, don’t forget you can always call your local appliance repair service to make sure your refrigerator stays cool.

Our experts are certified appliance repair providers for Sub-Zero, Wolf and more

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Refrigerator Takes Forever To Cool Down

A refrigerator shouldn’t take any longer than 24 hours to reach the right cooling temperature. If after 24 hours, your Sub-Zero refrigerator still feels warm, you’ll likely need to clean the condenser coils and check the compressor. Alternatively, you might also have a freon leak.

Clean The Condenser Coils

condenser coil

Condenser coils help your refrigerator release any of the heat generated in the cooling process. But over time, condenser coils tend to collect a lot of dust and other household debris like pet fur, which isn’t good for the overall health of your Sub-Zero refrigerator.When dirty, these condenser coils can’t properly release heat, which means they will work overtime to try and compensate. Not only does this shorten the lifespan of the compressor, but it also increases the amount of energy consumed. In other words, you’ll spend more on your electricity bills than necessary. To avoid these issues, clean your condenser coils at least every 6 to 12 months.

Problems With the Compressor


Your Sub-Zero refrigerator compressor is the pump that helps circulate coolant throughout the unit’s condenser coils. In turn, this helps cool the inside of the unit, while also removing any heat generated during the process.

The first sign that the compressor is broken is a fridge temperature that is warmer than usual. However, diagnosing or repairing a faulty compressor is not a job that you should attempt on your own, unless you’re certain that you know what you’re doing.

Potential Freon Leak

measure the pressure

Freon is a gas that your fridge uses to generate cool air. The freon in your refrigerator is contained in a closed system, which is circulated by the compressor through the condenser coils. While freon has a low toxicity level, a leak can compromise your food’s freshness, and more importantly, your own personal health. You can usually tell if you have a freon leak if you smell a strange odor coming from your refrigerator. Whenever you smell something unusual near your fridge, and can’t trace the source (hopefully, it’s not a spoiled tuna salad that you forgot about), contact an appliance repair service immediately. Breathing in refrigerant is harmful to your health. And prolonged exposure could even cause headaches, nausea, and fainting.

Refrigerator Has Excessive Condensation

door gasket

There are a few reasons why you’ll see excessive condensation build-up in your Sub-Zero refrigerator. The most common reason is that you leave the door open for too long, which allows humid air to get in and turn into condensation when it meets the unit’s cool air. Fortunately, keeping your refrigerator doors closed as much as possible should help prevent this common issue. However, there are several other issues to look out for including abroken temperature control (a warm refrigerator) and cracks, rips, or gaps in the door gasket. Spotting any of these issues is a good indication that your refrigerator is broken and needs repair.

If you suspect you’ve got a potential freon leak, call a professional appliance repair technician right away! A qualified appliance repair technician can help you to quickly, and safely, deal with the problem.

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Is Your Fridge Not Working Properly? Call a Professional Today!

If you suspect your refrigerator is on the verge of breaking down, don’t wait for the problem to get worse. Contact a professional appliance repair service like Denver’s Best. With years of appliance repair experience, you can rest easy knowing your broken Sub-Zero refrigerator is in good hands. We offer prompt, efficient, and affordable service in Denver and all surrounding areas, and we’re always on standby, waiting to hear from you!

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Refrigerator Makes Unusual Noise

There’s nothing more annoying than a fridge that makes loud or unusual noises, especially if you’re dealing with a newer model. If you hear unusual noise coming from your fridge, you likely have a problem with the compressor, condenser fan, or defrost timer. In this case, unless you have experience in refrigeration repair, the best thing to do is to call in a professional. If you don’t know where to look or how to fix the problem, you could end up causing more damage. A professional repair technician will get your fridge to work quietly again in no time at all.

Door Won’t Close Properly

refrigerator door is open

If your Sub-Zero refrigerator door won’t close properly, it’s most likely bent, warped, or broken. While a door that won’t close properly might not seem like a big deal, it actually greatly impacts the efficiency of your appliance, which will have to work harder than it should to keep the fridge’s interior cold.

Again, check the door seals for cracks, gaps, and tears that might be preventing the door from closing properly. If the door seals work well, check the door for other signs of damage, including damaged hinges and handles. If the door or any of its parts prevent the door from creating a good seal, you’ll need to find a replacement.

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