No cool no start

There are 2 possibilities I can think of for the hum. When you activate that door switch it activates 2 fans and the compressor. There is one fan located on the compressor and one located in the vent system in the fridge. The second fan is used to circulate cool air evenly through the fridge. I would recommend holding your finger on the door switch and listen carefully whether the noise is coming from inside the back of the fridge or from the lower bottom. Lower bottom could indicate compressor cooling fan or compressor. They would need to be inspected. If it sounds more like the other fan mentioned above it would again need to be inspected. The compressor cooling fans can get stuck or become noisy due to bearing failure. The vent fan can get stuck or noisy but also in some cases if the defrost circuit is not working can chock up with ice and create a buzzing noise as the fan blades strike the ice.

Get a repair man to check out the freon pressure in your unit. If the freon is low there will be no cooling power. Ours had a little leak in a hose and cost $95.00 to repair. If it's an older fridge it might be better to purchase a newer one. Unless you have the testers and know what you are doing to check this unit you need a repair man.

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.

If the unit is not cooling in either section of the appliance, you are experiencing some form of sealed system issue. This can include the compressor not working correctly, the evaporator fan not turning, or even coolant in the lines not at the correct levels to properly cool. If the compressor is running, humming, or even a little warm then that is typically normal. However if the compressor is running hot, then it is over working and the issue could be before the compressor in the evap fan, coil or coolant lines. Unless the unit is displaying an error code, often alpha-numeric, then you would need to contact your manufacturer and then a professional to move forward accurately.

Cut everything off for a few minutes then turn it back on and listen for a click from the compressor relay as the compressor tries to start.
Is the compressor motor running.If no check starter/overload relay.
Check to see if the condenser fan at the back underneath near the compressor is running. If no check fan.

Are the condenser coils near there warm or room temp. should be warm


Is the evaporator fan in the freezer running. It blows cold air into the fridge side through a damper in the wall between the freezer and fridge. Make sure the damper is open.

Below the evaporator fan is the evaporator coils. Remove the back cover in the freezer to observe the frost pattern. Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).

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You have one of two problems going on. Your fan is spinning at hitting the sides. Or your compressor is shot which seems to be more the problem and even though it is cold the humming sound is a warning for you that the compressor is shot and it is more affordable to replace the fridge then the compressor. Sometimes compressor can cost more then the fridge.

Check the fan in the freezer side to make sure it is running. If the fan is running and you have frost, then you have a defrost problem, Heater is not coming on to melt ice. If fan is not running replace fan.

my 3-way fridge won't work on anything, coils in back get hot but nothing to worry about, hoot.

failedcompressor start relay or bad commpessor

about the only thing you can do here is take the back cover off the unit see if the cooling fan for the compressor is running if it is and there is an Indian on the compressor then the compressor should be replaced if the fan isn't running then clear the fan once its running then turn the unit off for 30 Min's and try again