Not cooling in freezer

You are correct, we have replaced 70-80 of these under warranty in the last few years. We have found 100% of the time SO FAR it being the fresh food refrigerator evaporator. Very important recommendation if the unit is under warranty,. Always replace the compressor with the evaporator. About 30% of the time moisture will get into the sealed system and mix with the compressor oil and damage the compressor valves. So if this is not under warranty advise the customer of the 30% risk of needing to replace the compressor after evaporator installation. Or just bid it for both compressor & evaporator and you will be 100% safe. Matt Ace Technician

Here is a video for the evaporator replacement on a similar model refrigerator.

HI. Yes, your model number is listed as one to has this potential sealed system failure. This repair is covered under the manufacture even if its out of warranty. You should be a Whirlpool service provide to do this repair. You are suppose to call whirlpool tech line while with the unit and they will give you the appropriate part numbers to complete the repair. The parts that need replaced are the fresh food evaporator, filter drier, and I would recommend replacing the compressor as well to avoid future issue from moisture in the system. There is also a part number for a heat shield kit they will give you for brazing in the new evaporator. You are also going to need the tech sheet for this repair to open the sealed system valve for reclaiming and recharging.