Circulator fan in freezer compartment not coming on ,fan motor is good.

Take the cover off the fridge fan and put a flash light in there and a camera set to record. close the door for a couple of minutes and then look at the footage to see if the fan is running. The circulation fan should run all the time.

1-The condenser coils are usually located under the refrigerator. They dissipate heat as refrigerant passes through them. If the condenser coils are dirty, they won't dissipate the heat effectively. As debris builds up on the coils, the refrigerator becomes less efficient, causing the refrigerator to work harder to cool down. If the coils are significantly dirty, the refrigerator will not be able to maintain the proper temperature. Check the condenser coils to determine if they are dirty-if the condenser coils are dirty, clean them.
2-The evaporator fan motor draws air over the evaporator (cooling) coils and circulates it throughout the refrigerator and freezer compartments. Some refrigerators have more than one evaporator fan motor. On refrigerators with only one evaporator, the evaporator is located in the freezer compartment. If the evaporator fan is not working, it will not circulate the cold air to the refrigerator compartment. If this occurs, the freezer may still get cold, while the refrigerator will not get cold. To determine if the evaporator fan motor is defective, try turning the fan blade by hand. If the fan blade does not turn freely, replace the fan motor. Additionally, if the motor is unusually noisy, replace it. Finally, if the motor does not run at all, use a multimeter to test the motor windings for continuity. If the windings do not have continuity, replace the evaporator fan motor.

Is this is a bottom mount fridge? Hey if your fridge is a fairly a new one. Say less than 8 years old and a fancy one then this is how it works.

a) Fan in freezer circulates air. Mainly to the freezer compartment.

b) Then for the fridge compartment there is a Vent door operated by a vent motor.

Either this vent motor not working and opening, or it is frozen or the thermister that controls the temperature on Fridge compartment is not asking for cooling and thus not sending power to the vent motor to open.

Fan Problems
One of the most common reasons for the freezer to start failing is called "frost free failure." Ice can build up on the evaporator coils over time, and this ice builds up until it starts blocking the fan. The fan is responsible for circulating cold air throughout the freezer, so if it is blocked the freezer will not be able to freeze any food. You can usually check this by removing an access panel in the back of the freezer to inspect the coils. If ice is built up on the coils, a hairdryer can assist in defrosting them.It's also possible that the fan is not running at all. If the fan is burned out or the motor isn't running, cold air can't circulate through the freezer and everything will melt. You can normally hear the fan motor switch on and off from time to time. Listen for it and if you can't hear it coming on for an extended period of time, the motor may need repair or replacement. The wires connecting to the fan may be the problem, preventing the fan from receiving electricity.

Other Causes
Several other problems could be keeping your freezer from freezing:
There could be leaks in one or several of the hoses in the refrigerator, which results in the cold air being lost instead of circulating properly throughout the fridge and freezer.
If you have the freezer so full that the cold air can't circulate, your food will thaw even though the freezer isn't malfunctioning. Always leave some space open in the freezer and try to not store food right up against the cooling vents.
The thermostat might have shorted out, which means the freezer can't accurately determine how cold it is. If this is the case, the refrigerator would probably not be working, either.
If your defrost drain becomes clogged, the water in the line will just refreeze over and over again, which could damage the lines as well as the fan. Always check the drain and make sure no sludge is building up in it if you have a self-defrosting refrigerator.
Always try to keep the freezer door closed for long periods of time. The more the door is opened, the more warm air is let in and cold air is released. If the door is opened frequently, the freezer could be warming faster than the fridge can cool it, which will thaw your food.

Hope this will solve the issue.

Have a good day! : )

. Replace the circulation fan motor located in the freezer compartment mounted to evaporator cover .

if the left side of your fridge is the freezer compartment , chances are you have a bad circulation fan . I would suggest replacing the fan motor assembly . The circulation fan is located at the rear of the freezer mounted to the evaporator cover .

you probably have a bad air circulation fan or a restriction in the ductwork between the freezer and the refrigerator that the circulation fan supplies the cold air from the freezer to the refrigerator compartment. you should be able to hear the circulation fan motor running when the unit is in normal operation mode. the only time the fan will not be running is when the unit is in defrost mode which occurs once every six to eight hours depending on the defrost timer in your unit.

you probably have a bad circulation fan in the freezer compartment. its circulates the air from the freezer to the refrigerator compartment which cools the refrigerator portion of the unit. if you don't hear it running , the fan blades are either stuck on ice or the motor is burned out and you'll have to replace it .

Sounds like the fan in the freezer side is not working.Sometimes the plastic blade comes off the motor shaft.If the fan is not working the cold air can not circulate

you have a defrost problem