Hi, My fridge ( 420 ltrs) Top Freezer making constant humming noise ( like a dieasl car engine)like the engine keeps running and try to cool the fridge. 1 year old. When I open the freezer or the fridge door the noise stops. When I close the doors the noise starts again. Thank You Alex

Try this test. Set a window fan behind the fridge to constantly blow air across the lower coils at the floor. If the fridge works well after a while of this, then the lower fan on the fridge needs replaced. Sometimes though, after a while, the fan will finally start working again because the cycle has finally corrected itself with the test. Leave the window fan run on low for a few days before removing it. The hum you hear is the compressor moving the coolant and is supposed to do the hum sound. That's good. Now once the fridge is working, and you still have a good freezer section and not cool enough below in the fridge for you, there is a knob that sets the cool lower by opening flaps under the freezer to let more cold down to the fridge area. Set this knob to colder and the flaps will open more.

Hi,

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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Refrigeratoror Freezer not Cooling or Getting Cold
heatman101
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Hi,
The fan is hitting ice build up...

Check out these tips...they can help you figure out whats going wrong with your refrigerator and why it is not cooling

Refrigerator not Cooling or Fridge not Cooling

How to Defrost Refrigerator Defrost Timer Problem

Water Running in refrigerator from Freezer

Refrigerator or Freezer not Cooling or Getting Cold

heatman101

Hi,

Check out these tips...they can help you figure out whats going wrong with your refrigerator and why it is not cooling

Refrigerator not Cooling or Fridge not Cooling

How to Defrost Refrigerator Defrost Timer Problem

Water Running in refrigerator from Freezer

heatman101

Hi,

Check out these tips...they can help you figure out whats going wrong with your refrigerator and why it is not cooling

Refrigerator not Cooling or Fridge not Cooling

How to Defrost Refrigerator Defrost Timer Problem

Water Running in refrigerator from Freezer

heatman101

Hi,
The fan is hitting on ice buildup...unit is not defrosting...
There are a few reasons why the refrigerator part will not cool...here are a couple of tips that will help you to figure out why the refrigerantor is not cooling...

Refrigerator not Cooling or Fridge not Cooling
http://www.fixya.com/support/r3662945-refrigerator_not_cooling_or_fridge_not

How to Defrost Refrigerator Defrost Timer Problem
http://www.fixya.com/support/r3771673-defrost_refrigerator_defrost_timer

heatman101

I had a same problem, However the fan in the freezer seems stop and the freezer compartment is melting. Its a double door LG with 270 ltrs.

Humming noise would be your compressor going bad. The noise from the fan is because they are over working to try and keep everything cool

Turned refrigerator off for 8 hours, let the frost melt and the fan in the freezer worked again. The compressor now only has a soft clunk when it goes off.

Depends a bit on whether the compressor really is running, or if it's just humming because it's got power on the run coil, but not on the start coil.

Have a careful listen to the compressor. If it's making the trilling or gurgling sounds that go with a working compressor, then your problem is probably one of lost gas. Fixing this is not a do-it-yourself job.

If the compressor sounds like it's stalled, the problem may lie with the starter. Replacements are usually cheap enough for it to be worth fitting a new one just to see if it works.

A.