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Had the problem in a similar fridge - the repair person said the noise was most likely the sound of ice build up being removed during defrost cycle and not to worry. Suggest you check the freezer temperature is not too cold and building up excess ice.
I would see if the old girl still has a chance at life before replacing it. First, make sure that the condenser grill (under your refrigerator) is not extremely dirty and that the fan is operating. Make sure that you have good air flow from front to back. You would be surprised how much lint, dog hair and lint will accumulate on the inside of the back panel. Clean it out!
If that isn't the case then I would check for ice build up behind the inner panel of the freezer compartment. If there is, then your defrost system is not working and you will need to figure out which component needs to be replaced (defrost heater, defrost thermostat or the defrost timer).
If you do have ice build up then you can defrost the system by unplugging the unit and using a hair dryer to melt the ice, but be ready for the amount of water!
I have a old Amana that I bought in 1983 and it is still working great! They have excellent components that stand the test of time.
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.
Look closer because ice can build up and the fan just barely hits it making the noise. If the fan blades are not hitting anything, replace the fan motor as the bearings are getting worn out.
This is a common question here.... The most common solutions are that either the fan has stopped working or the defrost is not working and the ice build up stops the fan.
First unplug the refrigerator for 12 hours or so to see if there is ice build up that is stopping the fan. If the fan works when you plug it back in then find out why the ice is building up. Ususally it is because the defrost timer has gone bad.
If the fan still does not work then most likely the fan has gone bad. You will need to replace the fan.
The fan blows a portion of the cold air from the freezer side. If the air is not forced oover to the refrigerator side. the freezer is great but the refrigerator is warm.
Hope this helps you understand what is happening and ultimately solves your problem for you!!
The evaporator fan motor inside your fridge is constantly trying to keep the temperature you have set it to. when the fan is on it circulates the cold air from your freezer in to your fridge. if you hear a banging noise it is cause by the fan hitting a build up of ice. this can be caused by a clogged drain pan or tube, not allowing water build up to be drained, or you could also have a defrost heater issue in which case you would have a large build up of ice near your fan. you can access the fan motor by removing the two panels at the back of the freezer, once removed you will be able to see whether or not there is a ice build up.hope this helps you Thanks.
If noise stops when you open the door, you may have a noisy fan (or could have ice build up, causing fan blade to hit ice and cause noise). I gather it is a frost-free model ie has a fan in the freezer compartment. If noise is caused by fan hitting ice build up, you may have a problem with the auto defrost system, as you should not get ice build up in a frost free.
Noise stops when you open door because fan turns off when door is opened.
The fan should blow air into the heat sink. The warm air exits the
heat sink at both ends. (It might work the other way, haven't tried
it.)
When you have ice in your cooler, you know the thermo-electric element is working well--it's below freezing!
Ice builds up because there is water in the cooler. For example, in
humid weather, you open the cooler, some humid air gets in, and the
cooler temperature condenses the water. You have to empty this water,
either by tipping the cooler, or using a sponge.
You can easily defrost the cooler by unplugging it for an hour or so.
You know it's time to defrost when you hear the fan blades making a
racket because they're hitting something--a thick buildup of ice.
It could be the fan is bad or that it is hitting ice. If the noise is kind of a buzzing like it is hitting ice...defrost your unit by unplugging and waiting a day or so for full melt out...then check your door gaskets for cleanliness and good seal. Avoid 'windowshopping".
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