How to change evaporator fan

There are a few potential causes of a noisy bottom freezer. Here are some things you can try to fix the problem:

1. Check for frost buildup: Frost buildup can cause the freezer to become louder as it has to work harder to keep things frozen. To check for frost buildup, remove all items from the freezer and unplug the fridge. Then, use a hair dryer to melt any frost that has accumulated on the evaporator coils (usually located behind the back panel of the freezer).
2. Check for loose parts: Some common sources of noise in a freezer are loose screws, washers, or other small parts. Check for any loose items and tighten them as needed.
3. Check the evaporator fan: The evaporator fan is responsible for circulating air within the freezer. If the fan is not working properly, it can cause the freezer to become noisy. You can check the fan by removing the back panel of the freezer and listening for any unusual noises. If you suspect the fan is the problem, you may need to replace it.
4. Check the compressor: The compressor is responsible for circulating refrigerant and cooling the freezer. If the compressor is malfunctioning, it can cause the freezer to become noisy. You can check the compressor by listening for any unusual noises or by checking the compressor with a multimeter. If you suspect the compressor is the problem, you may need to replace it.

If you are unable to fix the problem yourself, you may want to consider contacting a repair service. They will be able to diagnose and fix the issue more accurately.

Question edited for clarity, MAKER.
Question moved to Model Category.

Your fridge freezer has three fans.

The compressor evaporator fan cuts in and out as required to maintain temperature.

The fridge evaporator circulation fan runs to maintain an even temperature. It stops when to open the door and resumes when you close it and stops when the set temperature is reached as long as the compressor isn't running. If the compressor is running, the fan normally runs to prevent icing which happens slowly.

The freezer also has a fan, and that runs pretty much all the time unless target temperature is met and the compressor is not running. This fan runs when you open the door to stop the moist air from the room freezing on contact to the 0'F, -18'C evaporator fins. The fan keeps the air moving to deposit less frost.

It sounds like your is running normally except for the noise. Trace the noise and find it. The compressor fan has a Shark Paper fibre board cover and these often distort over time and touch the fan blades. That is the common cause. The less common cause is the internal fans pinging off built up ice that should have been removed during the defrost cycle.

When you shut your top wire shelf you do a few things. First of all you activate your fan. Your fan sits in back of a large evaporator coil which is prone to defrost issues. I would imagine your fan is hitting ice due to a defrost issue. You may want to check your defrost system out. Ie your defrost timer.
or alternatively your fan could be getting old and needs replacing, it could just be making noise.
Joe B, Certified refrig.

Give the evaporator a chance to get cold, then check you've got power to the fan, via the evaporator thermistor and door switch

the suction noise is not something that will happen all the time.
check the current draw on the compressor and make sure it is in between 1.2 and 1.6 amps.also look at you evaporator coils and make sure there is no excessive frost build up.If there is ice build up then you need to defrost it check the heating element and defrost timer and make sure they are in proper working order.also check the evaporator fan and make sure it is working when the unit is in a cooling mode.

There are only two other parts in the freezer that can make noisei if your icemaker is off. The evaporator fan motor makes noise when ice builds up around it, and the blades start hitting the ice. It also makes noise when the bearings start to fail on the motor. Rarely, the evaporator will make noise when the freon is pumped through it, we will get all kinds of strange noises. This is not a problem usually as long as your termperatures are fine. To check these items out, you will have to remove the icemaker and the back inside panel in the freezer. With it off, you can pinpoint where the noise is coming from. If it is a bad evaporator fan motor, replace it. Good Luck, Appliance Specialists

First determine if the noise is from inside or outside of the freezer. If it is louder inside, and you have a frost free freezer, it is usally your evaporator fan motor. If the noise is behind and underneath you unit, then you need to pull the backing plate off, if it has one and determine if the noise is coming from the condensor fan motor, ( if it has one), or from the compressor itself. It usually is compressor and is definitely not worth repairing unless it is under a 5 year sealed system warrantee. Good Luck

If you have the model number you posted under, you are looking at replacing the evaporator fan motor, which would be a part number 4309014 for that Maytag MQU1556A. It is located inside the freezer, behind the lower back wall.

REplace the fan. The fan is most likely bent and will continue to have problems until it is replaced. You can get it at repairclinic.com

Sounds like the freezer evapurator fan... they make noise on and off at times when bears are wore... Thats about the only thing that can make noise inthe area ur talking about.. if noise comes back listen where the freezer fan is.. is most liklly the problem