If you’re experiencing problems with your Sub-Zero refrigerator, you’re not alone. These appliances are known for their durability and quality, but they can sometimes malfunction. If your refrigerator isn’t getting cold enough, there are a few things you can do to troubleshoot the problem. Here are some of the most common causes of this issue and how to fix them.
Sub-Zero Refrigerator Is Not Cooling: Issues and Fixes
When your Sub-Zero refrigerator won’t get cold enough or has stopped cooling altogether, troubleshoot the problem by starting with the simplest fixes:
The fridge isn’t level.
One of the most common reasons for a Sub-Zero refrigerator not cooling properly is that the unit is not level. If your refrigerator is not level, the doors will not seal properly and cold air will escape. To fix this issue, simply adjust the leveling legs until the fridge is level.
The condenser coils are dirty.
Another common cause of this problem is that the condenser coils are dirty. The condenser coils are responsible for dissipating heat which is how refrigerators stay cold inside.
If these coils are covered in dust or dirt, they will not be able to do their job properly. To clean the condenser coils, simply locate them and brush them off with a soft brush. Use a vacuum cleaner hose attachment to suck up the debris while cleaning the condenser.

Sub-Zero refrigerator Sabbath Mode is on.
A Sub-Zero fridge not cooling properly may be due to the Sabbath Mode feature. This feature is designed to conserve energy by disabling certain features of the refrigerator on the Sabbath. If you think this may be the issue, try exiting Sabbath Mode by following the instructions for your Sub-Zero model.
The air damper is stuck closed.
The air damper controls the flow of air through vents between the refrigerator and freezer compartments. If it gets stuck closed, cold air will not circulate properly and the fridge will not stay cold.
To fix this, simply open the damper and see if it moves freely. If not, it may need to be replaced by a Sub-Zero refrigerator repair professional.

The refrigerator or freezer compartment is too full.
All compartments in your refrigerator require free airflow to cool properly. If the refrigerator or freezer ger too full, air will not be able to circulate, and your Sub-Zero refrigerator won’t cool as well. To fix this, simply remove some of the items from the freezer.
The door isn’t closing.
Storing too many items can also prevent the refrigerator door from closing and sealing shut. Start by verifying that the door closes and was not left ajar for a long time.
Next, turn the door ajar alarm on if the model has one to alert you when the door isn’t fully closed. And be sure to move any food that may be blocking the door from closing completely.
If you have tried all of these troubleshooting tips but still your Sub-Zero refrigerator is not cooling properly, it may be time to call a professional. A qualified technician from the team at Twin Appliances will be able to diagnose the problem and get your fridge back up and running in no time. Stay cool!