Question about Sub-Zero Refrigerators
Many fridge's have a selector switch for "humidity" This can be vague as some do not go into great detail about what they do or how they work.
The 10 cent answer is that the heat you feel is part of the defrost circuit. There are places on the outside of the fridge & freezer (mostly near the doors) that are prone to moisture build up. This is caused when the cold air (escaping the fridge & freezer compartments when the door is opened) meeting warm humid ambient air of the kitchen in warm, humid months. The cold air condenses and water droplets form on the fridge case.
If you live in a warm, humid area; you would set the switch the way is currently set - that is; to turn on the electric heaters in the these certain spots of the fridge cabinet to prevent moisture (and eventual corrosion) from accumulating. If you are not living in such a climate, you could change the setting of the switch so that the heater does not run. This would save you a few bucks on you electric bill. These heaters are fairly small and only run for a relatively short time (20 minutes) 2 - 4 time / day - at the same time the defrost circuit in the freezer runs.
Try it the other way and see if you don't have a problem with moisture / don't mind moisture build up.
I hope this answered your question. Please rate my reply. Thank you.
Posted on Mar 24, 2011
Most refrigerators have some of the condenser coil running through this area to keep condensation down. As long as the unit is cooling fine and it is warm but not very hot there probably isn't a problem. You can check to see if the coils on the bottom are dirty, a cover will have to be removed. Also check to see if the condenser fan is running which is close by the compressor.
Posted on Mar 24, 2011
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Posted on Jan 02, 2017
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