Ice build up around fan in frezeer.makes looud noise....if not melted the refridgrator part a bottom of unit stops cooling.....if melted fan runs smthly....things cool well, but happens again over noght with ice build up aroind fan and here we go again

Sounds like the fan blade/ fan motor is the problem. This video should help you. Let me know if you need further assistance.

proberly ice build up around the fan motor.You may have a defrost problem.

There is a fan in the back of the freezer that runs when the compressor is running. It sounds like you have ice build up around the fan.
You could have one of these problems: (Sorted by most likely to least likely)
1) Auto Defrost timer, defrost bi-metal or defrost heater is defective - the unit will go into auto defrost about twice a day, if this fails you will have lots of ice built up around the cooling fins and sometimes on the fan. Pull the back off the inside of the freezer and check for ice build up around the cooling fins, there should be none or very little if its running normal.

2) Bad door gasket - if the freezer door is leaking warm moist air inside the freezer it could be condensing around the fan causing ice (you will also see ice build up on things inside your freezer too).

3) Plugged drain - the drain leads from the freezer down to the drain pain under the fridge. If this is plugged ice will build up on the bottom of the freezer and potentially around the fan.

Hi,
The fan is hitting on ice buildup...
Check out these tips...they can help you figure out what is going wrong withyour refrigerator and why it is not cooling

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heatman101

you need to have someone check the defrost circuit. if the unit does not defrost properly , ice will accumulate on the back panel where the evaporator is, blocking the evaporator fans completely, and the circulation fan will eventually stop working because the ice buildup contacts the blades all the fan motor, and eventually the refrigerator compartment will start to get warmer and warmer because there is no circulation of cool air.

the compresor fan is might make that sound or the fan in your freezer is tuching something like build up ice... see if you can reach it and clean it.

The noise you are hearing is probably the fan blades hitting some ice build up. Un plug your refrigerator for over night and it will defrost melting the ice. If it still makes the noise after that then the fan motor is going bad, you will need to replace it soon. The reason that it stops when you open the door is because the power is cut off to the fan when you open the door.

could be ice on or around the fan...when the fan hits ice it makes noize....

try defrosting, it might be touching ice build up. you can check by pressing the knob switch in front after defrosting one day

Generally, icing is the result of too much water vapor inside the unit, blockage of the circulation channels and too much packing in of the box.  The water vapor is generally caused by: uncapped items in the fridge, opening the door too often, humid conditions, bad door seals.  There is of course, there is a possibility that the defrost cycle on the unit is not working.  About once a day, depending on the brand, you should notice that the fans and compressor don't run and you should hear a bit of creaking, sloshing or other strange noises as the ice melts.  If this is not happening, your defrost timer or the coil it heats could be bad.