Refrigerator and freezer Freezer or refrigerator side will not get cold. The fan in the back of the fridge is running but no cold air anywhere. There's a knob in the front like under the fridge which I turn until it clicks but still nothing happens. The compressor is really warm to touch and you can hear somrthing like it kicks in but no cold air. Please help.

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Does the compressor click on and off every minute or so and is hot? That would likely be tripping on a thermal overload due to not being able to start (bad motor starter on the compressor). If the compressor is running normally and warm then you may have a froze up coil. Take the lower rear back sheetmetal cover off the inside freezer section and look at the coil. If it's frozen block of ice basically the defrost cycle is not working and the ice has blocked the air flow through the unit. (could be bad defrost heater, defrost timer or defrost t-stat). If the compressor is running normally and warm and you see no ice or even frost on the coils then you have a sealed system problem that usually means most if not all of the refrigerant has leaked out of the system (or a blockage/restriction in the system). This would be the worst case since it means a whole bunch of money to repair. Let us know what you find out and we can have a better idea on what to recommend.
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