My fridge (GE GSL25) is not cooling/freezing enough. The lower refrigerator is cold enough but the upper trays are not. The lower freezer compartment is freezing enough to keep ice frozen but the upper compartments are not.

Hi

Please check the bellow link to have an in-depth knowledge to diagnose your problem to your refrigerator…

http://www.repairclinic.com/Refrigerator-Troubleshooting#Thefreezercompartmentisicingup

The freezer is where the cooling coils are located. Then air is moved over the coils and circulated through the fridge side by a small blower or fan. The problem arises when the air is not circulated for some reason.The reasons the air is not moving is usually two reasons …..
The fan or blower has failed or the coil is covered over with ice and blocks the air flow.

The first reason is pretty simple to fix, you simply replace the air circulator and things are good again.
The second reason can be more difficult.The timing device that runs the defrost cycle of the refrigerator is defective.
or the heater coil that melts the water is shorted or not working.
Usually the first thing to check is the heater coil. If there is resistance through the coil then most likely it is still good.
The timing device can be an advanced defrost control board or a mechanical timing device.
If the heater coil checks out to be good then the problem should be the timer.

For most situations, unplugging the refrigerator and allowing it to defrost on it’s own will get you going temporarily, till parts can be shipped to you. That will melt the ice and give you a few days or a couple of weeks till it ices up to the point where it will not work again.
So the problem can usually be traced to one of three things.
The fan or blower ,The timer device ,The electric heater coil.

Let us know if you have something more to know else accept the suggestion.
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