Fixing most issues with a malfunctioning fan typically requires replacing the compressor, electronic control board, or evaporator. However, given the various potential causes, a comprehensive diagnosis is crucial for resolving the issue.
Blocked air vents: If the air vents in your freezer are blocked, this can cause the freezer fan to start and then stop. This can happen if there is a buildup of ice in the freezer or if items in the freezer are blocking the vents. Check the vents and clear any ice or obstructions.
Feel for cold air in the freezer.
If the evaporator fan motor stops working, your freezer will begin to defrost. Open the freezer door and feel for cool air with your hand. If the freezer isn't working, you should be able to tell quickly.
Among all of the repairs made to walk-in refrigerators and freezers, one of the most common is that of replacing a dead fan. Even if everything else in a refrigeration unit is working properly, cold temperatures cannot be maintained if the interior fan is not working.
Most probable causes of no air flow are bad fan motor/blade (located in the freezer section) or a build up of ice between the fins of the evap coil inside the freezer caused by a bad defrost timer or heater.
If vents are blocked, airflow will decrease. Temperature and moisture issues may arise due to blocked vents. Items placed directly in the airflow from the freezer compartment to the refrigerator compartment may freeze. Do not place temperature-sensitive items, such as eggs and liquids, in these areas.
A blocked evaporator fan
If ice buildup or other obstructions block the fan, it can't circulate air effectively, leading to cooling issues.
However, the compressor and fan motors should only have to run occasionally throughout the day to maintain that cool temperature. If the compressor and fan motors are continuously running, it means the system is having trouble maintaining the temperature.
It sounds like you are referring to the evaporator fan inside the freezer. That is behind the rear panels inside, you remove the shelves then the panel to find this. As long as the fan gets 120v when the compressor is on, you replace the fan motor.
The condenser fan cools the compressor and condenser coils as they work — the fan should run when the compressor is running. If the condenser fan does not function properly, the refrigerator's temperature can rise, and the compressor can overheat.
Signs of Trouble: Watch out for wobbling blades, unusual noises, or sluggish fan speeds. These could indicate worn-out parts, loose connections, or a failing motor, all signs it might be time for a replacement.
WHY IS MY REFRIGERATOR WORKING, BUT MY FREEZER IS NOT FREEZING? Dirty condenser coils can reduce your freezer's cooling capacity and may be the reason why your refrigerator is working but your freezer is struggling. You can vacuum the coils with a crevice attachment to help remove dust and clean condenser coils.
Evaporator fan
A small fan and motor are mounted near the evaporator, helping draw air over the coils and circulate it to the fridge and freezer. If this fan fails, you'll likely be stuck with a warm refrigerator.
The evaporator coils are where the air goes to cool down. If the coils are covered in frost, the air can't pass through efficiently and won't get adequately cool, resulting in a freezer working but the fridge not cooling.
Fixing most issues with a malfunctioning fan typically requires replacing the compressor, electronic control board, or evaporator. However, given the various potential causes, a comprehensive diagnosis is crucial for resolving the issue. Obtaining an accurate diagnosis is vital for determining the cost of the repair.
Humming, clicking, buzzing, or other noises coming from your freezer are often part of its normal operation. For example: A low humming or buzzing noise can be heard when the compressor is running. A clicking sound can be heard when the defrost timer switches on and off.
Potential Causes
Electrical problems — such as wiring issues or electrical failures — can also disrupt the fan's operation and lead to malfunctions. There's also the possibility that it's a faulty motor which has led to undue wear, electrical issues or outright failure over time.
If the compressor or the compressor start relay stops working, the freezer won't freeze. If you listen to the freezer for about 30 minutes but don't hear the familiar hum when it operations, it's possible the compressor is the problem. A certified refrigeration technician is required if the compressor fails.
As the motor starts to work harder it will make a lot more noise when running. Aside from using more energy to move air properly, the lifespan of the fan will also be affected because the components are under more stress. Another signal that your extractor fan is becoming blocked is that it will be much less efficient.
Reset your refrigerator: First, unplug it (or turn off the power at the circuit breaker), and then wait about five minutes for the electrical charge to clear out of it. Then, power it back on again.
Boost overall efficiency by routinely cleaning condenser coils, preventing dirt buildup that could compromise the fridge freezer's cooling capabilities. Before storing leftovers, pre-cool them to reduce the workload on the appliance, ensuring optimal freshness.