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Check to see if the defrost drain is clogged.
Is the compressor running? Are the fans running? Did it get put in showroom mode?
If the compressor and fans are running it should be cooling. Is there frost on the evaporator?
It should be covered completely, it may have a coolant leak.
It would have a thin layer of frost, unless it was in defrost mode. If you have a ball of ice at the evap inlet it usually indicates a low coolant level.
It's a difficult and expensive job to repair a sealed system leak. You may want to call a local service company for a visit.
If it's in defrost mode, the compressor and fans would not be running.
I would check yelp for local reviews.
I like the Whirlpool brands. A lot of their appliances are still made in the USA.