Fridge cooler just stays on.

Yes it has a fan you should here it and feel it. It sounds like your defrost coil may have gone out. Take the back pannel of the freezer off and see if it is clogged with frost.

A fridge operates due to adiabatics, which is the ability of a gas to absorb energy by compression, which turns to heat, then dispel heat by evaporation. The little black tank is a compressor which compresses the gas in the condensation loop. When the gas is compressed it heats up, so the little back tank will get hot, as will the condensation grid, often at the back of the fridge, which acts like a radiator to cool down the gas inside. When the gas is evaporated into the evaporation loop, it expands again and any rise in temperature caused by the compression will be lost. Add to this loss in temperature caused by the radiator and you have a total net loss in temperature which is significantly cooler than what you started with.
The problem with your fridge has to start with the fan not working as this fan will help to cool the condenser radiator, unless it is a fan inside the unit itself which just distributes the cool air. (without knowing the make an model of the fridge I cannot determine the reason for the fan). Modern low energy fridges have a better and more economical set-up and it seems that your fridge has seen better days. The compressor is clearly working overtime to get so hot and particularly if it never seems to shut down or the fridge cool down. Sadly, I think it's time for a new fridge. You'll save the money you are currently spending on the electricity to run the old one.

There is a fan and a damper the blows cold air from freezer to refrigerator compartment. Damper is stuck closed or fan is not working is a good starting point.

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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Refrigerator or Freezer not Cooling or Getting Cold
heatman101

Hi,

Check out these tips...they can help you figure out whats going wrong with yourrefrigerator 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

The condenser fan located on the bottom near the compressor is not circulating well enough to keep the compressor at a good operating temperature causing the compressor to shut down for longer periods of time until cool enough to run again. Clean the coils good and replace condenser fan and you will be fine. The fan works as a cooler for the compressor. Imagine working in the yard on a hot day wearing a mask over your nose and mouth. Your body shuts down quicker because you have to take more rest due to the restriction of fresh air. Same applies to the compressor. Hope this helps. Rick

first off see if the fans are running if not replace the cold control

maybe fridge fan not working when door is closed could also be iced up air ducts between fridge and freezer

Some compressors are designed to be externally cooled some are not.
They have to process the refrigerant to certain pressures to operate correctly.
The specific condenser and expansion device do the rest.
By cooling a compressor artificially you make it work harder to do its' job.
Cooler is not always better.

Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.

• possible causes:

1. bad defrost timer
2. bad defrost heater (in freezer)
3. bad thermo switch in freezer

If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person replace one of the above items.