The evaporator fan motor is part of the overall refrigeration system, and it pulls air through the coils of the evaporator to remove heat from the circulating air. The evaporator fan motor is also accountable for distributing the cooled air throughout both the freezer and the refrigerator compartments, depending on the model installed.
How to test a refrigerator evaporator fan motor?
- Take your multimeter and set it to ohms.
- Take the black multimeter standard test lead and touch the white wire with it.
- Touch and continue touching the white – brown wire with the red multimeter probe.
How to repair evaporator fan?
Instructions
- Disconnect the electrical power. Unplug the freezer or shut off the circuit breaker for the freezer. ...
- Remove the evaporator cover. Remove the drawers and shelves from the freezer. ...
- Remove the evaporator fan. Unplug the evaporator fan wires. ...
- Install the new evaporator fan. ...
- Reinstall the evaporator cover. ...
- Restore electrical power. ...
Does evaporator fan run all the time?
The evaporator fan is not supposed to run all the time but until the refrigerator reaches a set temperature. However, it runs in combination with the condenser and compressor fan. This is one school of thought. When the evaporator fan runs only with the condenser, you save up a lot of power.
How to replace an oven fan motor?
How to Replace an Oven Fan Motor in an Electric Cooker
- Safety Advice (Turn Off Your Cooker)
- Remove Oven From Cavity (If Built-In)
- Removing The Panels
- Disconnect Faulty Fan Motor
- Putting In New Motor
What happens if evaporator fan motor stops working?
An evaporator (indoor) fan-motor failure almost always results in the indoor coil freezing over and the suction line freezing all the way back to the compressor. And since the refrigerant isn't being evaporated in the coil, liquid refrigerant is being drained back into the compressor.
What happens if the evaporator fan goes out?
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. If the freezer is cold, there likely isn't an issue with the evaporator fan motor.
How do I know if my evaporator fan is broken?
If your refrigerator unit is not cooling the insides like it regularly does, and the fan on the back of the inside wall is either not running, or not blowing cool air like normal, it might be time to replace the evaporator fan.
Is the evaporator fan supposed to run all the time?
The evaporator fan is responsible for circulating the cold air from your coils and into the refrigerator section. Without it working, the cool air will not be efficiently blown onto your fresh food. However, your refrigerator will still try to maintain that temperature by instead just running all the time.
How do I test an evaporator fan motor?
0:092:02How to Test the Evaporator Fan in your Refrigerator - YouTubeYouTubeStart of suggested clipEnd of suggested clipOn the motor that you want to disconnect the plug if it's plugged into a connector. You just want toMoreOn the motor that you want to disconnect the plug if it's plugged into a connector. You just want to check the two wires and we're going to check them for resistance. So put your meter on ohms.
How many evaporator fans does a refrigerator have?
twoMany older refrigerators and most small refrigerators (like small bar and dorm refrigerators) do not have fans, but most modern frost-free refrigerators have two. One is under the refrigerator to cool the compressor and force air through the exterior coils.
How much does an evaporator fan cost?
Fridge Repair Cost by Type of ReplacementPartReplacement Cost (Labor Included)Thermostat$100 - $260Fan$120 - $150Evaporator Coil$200 - $300Ice Maker$350 - $5005 more rows•Mar 14, 2022
How long does an evaporator fan motor last?
Most evaporator fans last about 10-15 years, but they may need to be repaired or replaced sooner depending on the conditions in which they operate. The harder you work your evaporator fan, the sooner you will need to replace it.
What is the difference between an evaporator fan and a condenser fan?
The evaporator coil contains a refrigerant that will absorb heat from the air within the refrigerator. The condenser coil is where the refrigerant passes through to remove this heat, and then the whole process continues again.
What happens if refrigerator condenser fan doesn't work?
If the condenser fan does not function properly, the refrigerator's temperature can rise and the compressor can overheat.
Can Hear fridge running but not cooling?
If you can hear the compressor running but the fridge isn't cooling, the problem is most likely either frost-clogged evaporator coils or a stuck or broken evaporator fan. Evaporator fans often squeal or chirp when they start to go bad.
Is the fan on the refrigerator supposed to run constantly?
The condenser in a refrigerator is a motor, and like the one in your car it needs constant airflow to remain cool enough for the working parts to remain in working condition.
What would cause a freezer to work intermittently?
Faulty Start Relay: The start relay on your freezer provides power to the compressor. This means if the start relay isn't working, at best your freezer's compressor will work intermittently – or as is more likely, not at all, meaning your freezer won't freeze.
Why is my freezer fan not working?
If the fan is not running, unplug the refrigerator and remove the evaporator fan cover. In many cases the problem is do to the fact that the evaporator fan cannot operate freely due to an ice buildup on the fan blades.
Where is evaporator fan in fridge?
Evaporator fan motors are usually located towards the back of the refrigerator or freezer compartment behind a panel. Typically one will need to remove all the shelves and drawers so as to access this rear panel.
Why does my refrigerator fan go on and off?
If your fridge turns on and off on its own, it can be experiencing a problem with it overheating. This is directly related to the condenser coils. The condenser coils will be located either on the back of your fridge or on the bottom behind the access panel.
How to troubleshoot your refrigerator evaporator fan motor?
Now it is time for the most important part which is how to troubleshoot your refrigerator evaporator fan motor. If you don’t know how to do it then it is time for you to call the professional to fix it. Here are some methods that will help you to do it yourself.
What happens when refrigerator evaporator fan fails?
When the refrigerator evaporator fan fails, the food inside the refrigerator will start to spoil and rot. The temperature and humidity inside the refrigerator will increase, which can lead to food poisoning or other health concerns. If you suspect that your refrigerator’s evaporator fan has failed, you should contact a professional to take a look at it.
Where is evaporator fan located?
The evaporator fan is located in the furnace. It is responsible for pulling air from the house and sending it through the coil to cool down the air before it enters the house.
What does the evaporator fan motor do in a refrigerator?
The evaporator fan motor is a small electric motor that drives the evaporator fan. The evaporator fan blows air over the coils of an evaporator which is a device that changes a liquid to a gas, and then cools it by blowing over ice or cold water. This cools the refrigerator and freezer.
What happens if you don't defrost your refrigerator?
When you do not defrost your refrigerator properly, the evaporator may ice up and cause an obstruction in the blades. Before you have somebody take a look at your refrigerator, switch off the power and open up your evaporator fan to check that there are no blockages preventing the movement of the fan blades.
How to know if evaporator fan is damaged?
However, you will know when your evaporator fan has been damaged because it will affect the performance of your compressor. If the evaporator fan stops turning, the cold control sensing bulbs of your fresh food compartment will notice that there is no more air flow. The sensing bulbs will signal the compressor to work longer to compensate for ...
What is the function of the damper assembly on a refrigerator?
It functions closely with the damper assembly of your refrigerator that is responsible for controlling how much cold air gets to be distributed into the fresh food compartment of your refrigerator.
Why do sensing bulbs work?
The sensing bulbs will signal the compressor to work longer to compensate for the lack of air flow. What ultimately happens is that your evaporator coils will freeze over hence increasing the temperature of your freezer.
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To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience.
Do evaporator fans run all the time?
No, evaporate fans don’t run all the time. It stops when you open your refrigerator door. Also, if it gets damaged, it will stop suddenly. However, the main job of the evaporator fan is to take the heated air from the refrigerator and create cool air. Thus, it maintains the temperature.
How long and how often should the evaporator fan run?
The evaporator fan should run around 20 hours daily, though the running time depends on the refrigerator’s brand. Different brands have come up with different defrost time sets. And, the running time of the fan depends on the defrost time.
What happens when the refrigerator evaporator fan fails?
When the refrigerator evaporator fan fails, it will not balance the temperature. As a result, the temperature will rise soon and ruin the inside environment. Eventually, it loses its ability to preserve foods.
How to test an evaporator fan motor? Where is it located in a refrigerator?
Testing an evaporator fan is no longer a challenging task. You can do it by opening the fridge door. In that case, if you feel the cold air with your hands, there is no issue with your fan motor.
How to replace the evaporator fan motor?
Replacing the evaporator fan motor is no longer a difficult task. You can easily do that without spending a penny. Follow the steps that we are going to explain below.
What type of convection uses a fan or pump to force the liquid being cooled over the evap?
Forced Convection Type uses a fan or pump to force the liquid being cooled over the evap. Natural Convection Type has the liquid being cooled flows naturally to the evap. due to the density differences of the chilled and warm liquid.
What is the difference between evap and natural convection?
There are two types of evap.: Forced Convection Type uses a fan or pump to force the liquid being cooled over the evap. Natural Convection Type has the liquid being cooled flows ...
Why finned coils?
In summary, finned coils help to reduce coil cost, size and weight.
What is fin construction?
Finned construction are bare-tube coils upon which fins (metal plates usually Aluminium) are being installed. A more detailed discussion on this type of design will be provided here.
Why are fins added to bare tube?
The fins are added to the bare-tube to increase the heat transfer capability. They act as heat collector that pick up heat from the surrounding air and conduct it to the refrigerant inside the tube hence improving the efficiency in cooling the air of the surrounding.
How many fins per inch for air conditioning?
In air conditioning application, 14-16 fins per inch may be used as long it is designed in such a way that frost does not accumulates in the coils.Excessive finning may reduce the capacity of the evap. by restricting the flow of air over the coil hence the design engineers must do a proper system calculation and simulation at design stage.
Why is an evaporator important?
The reason for refrigeration is to remove heat from air, water or other substance.
How to clean a refrigerator with a evaporator coil?
Set the thermostat to zero and then unplug the unit. Open the doors to let warm air circulate in both the refrigerator and freezer. Dry the inside of the refrigerator and wipe off the refrigerator evaporator coils too.
Why do refrigerators not need manual defrosting?
Most of the newer refrigerators don’t require manual defrosting because they have automatic defrosting systems that reduce the frost build up on the refrigerator evaporator.
How does a refrigerator work?
How a Refrigerator Works. The refrigerator evaporator is one part of the refrigeration cycle that makes the inside of your refrigerator cold. After the refrigerant gas has gone through the condenser coils located at the back of the refrigerator, it starts to cool down and turn into a liquid. It’s at this liquid stage that ...
Why is an evaporator important?
What Is a Refrigerator Evaporator; Why Is It Important? When it comes down to the refrigerator system, the refrigerator evaporator plays a big role in refrigerator cooling. A refrigerator evaporator works alongside other refrigerator system components, such as the compressor, expansion device, and condenser. The basic function of ...
What is the expansion valve in a refrigerator?
The expansion valve controls the amount of cooled refrigerant gas that’s released into the refrigerator evaporator. As that gas enters the refrigerator evaporator, it’s pulled forward by the air pressure that’s created by the compressor on the opposite side. During this process, the refrigerant absorbs heat found by the evaporator, ...
How does a natural convection refrigerator work?
Natural convection works because there’s a difference between the density of a chilled and warm liquid.
Why do refrigerators use fans?
Some refrigerator models utilize fans to blow the air from inside the food compartments toward the evaporator coil to quickly absorb heat.
Do You Need to Test the Fan?
If your refrigerator isn't getting cool, the fan is just one of many possible reasons. According to Repair Clinic, other possible reasons include dirty evaporator coils, a faulty thermostat or a bad evaporator motor (compressor). A loud blowing sound from the motor doesn't mean it's bad either. You can often fix that by repositioning the refrigerator. That's the procedure for a Samsung refrigerator fan noise fix, according to Samsung.
What is the purpose of a refrigerator evaporator fan?
The purpose of the evaporator fan in a refrigerator is to circulate cold air from the evaporator coils throughout the food storage compartments. The evaporator coils are usually located behind the freezer compartment, ...
Why isn't my refrigerator fan working?
Do You Need to Test the Fan? If your refrigerator isn't getting cool , the fan is just one of many possible reasons. According to Repair Clinic, other possible reasons include dirty evaporator coils, a faulty thermostat or a bad evaporator motor (compressor).
Why does my refrigerator fan come on?
The fan should come on whenever the compressor cycles on. If it doesn't, the refrigerator won't get cool enough to preserve your food. When this happens, the fault could be in the wiring, the control panel or the fan itself. It's fairly easy to perform a continuity test on the fan to determine whether or not you need to replace it.
What to do if fan passes continuity test?
If the fan passes the continuity test, you'll want to look for a problem in the wiring or control panel. At this point, it's probably a good idea to call a licensed service technician.
Where is the fan on a refrigerator?
On many refrigerators, the fan is hidden by the back freezer panel, but it may also be located behind its own shield in a corner of the freezer compartment. Before you try to access it, unplug the refrigerator and remove everything, including shelves, from the freezer compartment. Advertisement.
Who is Chris Deziel?
Chris Deziel is a contractor, builder and general fix-it pro who has been active in the construction trades for 40 years . He has degrees in science and humanities and years of teaching experience. An avid craftsman and musician, Deziel began writing on home improvement topics in 2010.
