No, it is not normal for the freezer compartment in your refrigerator to have such a wide temperature range. Typically, the freezer compartment should maintain a steady temperature close to 0 degrees Fahrenheit (around -18 degrees Celsius). A fluctuation of 0 to 17 degrees Fahrenheit is not ideal and could indicate an issue with the refrigerator.
There are several possible reasons for this problem:
Improperly set temperature controls: Make sure the temperature controls for the freezer compartment are set correctly. They might have been accidentally adjusted during the fan motor replacement.
Defrost cycle: Refrigerators with automatic defrost cycles might experience temporary temperature fluctuations during the defrosting process. However, the temperature should stabilize once the defrost cycle is complete.
Airflow blockage: Check if there are any obstructions that might be blocking the proper airflow in the freezer compartment. A blocked vent or an overcrowded freezer can lead to uneven cooling.
Faulty fan motor installation: The new fan motor might not have been installed correctly or might not be functioning optimally. This could result in inadequate air circulation and uneven cooling.
Faulty temperature sensor: Refrigerators have temperature sensors that help regulate the cooling. If the sensor is faulty or not properly positioned, it could lead to inaccurate temperature readings and uneven cooling.
Refrigerant leak: In some cases, a refrigerant leak can cause cooling issues in the freezer compartment, resulting in inconsistent temperatures.
Given that you've recently had the fan motor replaced, it's possible that the issue is related to the replacement process. I recommend reaching out to the professional who performed the replacement and inform them about the temperature fluctuation problem. They should be able to diagnose the issue and rectify it. If you have a warranty on the service or the new fan motor, now would be a good time to use it.
In the meantime, you can check the temperature controls, ensure proper airflow, and remove any obstructions in the freezer compartment to see if it helps with the temperature stability. If the issue persists, it's best to get professional assistance to avoid any further damage to the refrigerator.