Defrosting may solve it, if the ice was simply blocking the airflow. There's also a circulating fan that may have failed, but the part shouldn't cost more than $50 to replace if it has failed.
Defrosting should definitely be the first step though -- you're on the right track.
Firstly check the Condenser coils, these are copper coils of tubing usually located on the back of the unit near the ground. They need to be free of all dust and grease to work at maximum efficiency and it is recommended to clean them every 6 to 10 months.
If they are or have recently been cleaned then make sure the inside fan (if there is one) isn't being blocked by anything and make sure there is adequate airflow throughout the freezer/refrigerator.
If neither of these seem to be the problem then you may have a refrigerant leak and you need a certified technician to take a look at it.
The fridge gets its cold air from the freezer through a vent(damper)
between the freezer and fridge.The fan in the freezer blows air through it.
Make sure this fan is running. You may have to hold the door switch in for it
to run. There is a flap you adjust with
the fridge temp. control. Make sure it's opening and closing when you adjust
the fridge temp. The problem could be the electronic control if
you have one or the mechanical linkages.
Is this a French door unit? Do you see excessive build up of frost in the freezer on the back panel? Is that evaporator fan motor running? That is what circulates the air from the freezer to the refrigerator.
Check those coils underneith. They are making the machine work harder IF they are dirty. They may be full of lint and cobwebs. All that needs to be removed.
If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61
Coldspot 106. Model
This model refrigerator is a relatively small refrigerator. It is a Freezer on top model, and Sears documents lists this unit at 18.1 cu ft. I hope that answers your question about capacity.
I'm glad I could help. If you need anything else, just let me know.
In reality, when you buy a replacement, you buy by dimensions to fit the space not cubic feet of the old one. Go to Home Depot armed with a tape measure.
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Turn it off by removing the wall plug for 10 minutes. This will do a power rest to the control electronics. This is a bottom mounted freezer, so cold air for the fridge is vented upwards by a fan. Make sure it is running and there are no ice blockages. Strangely they call the fan in the fridge an
Refrigerator Evaporator Fan Motor. The part is obsolete anyway.
If it normally says 4 for the fridge, that would be 4 degrees Centigrade, which means the freezer should show minus 18'C. Or 36'F Fridge / 0' F Freezer/
This shows all the parts.
https://www.searspartsdirect.com/model/3tradtge4f-000582/kenmore-79575004401-bottom-mount-refrigerator-parts
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