Kenmore Frost Free Commercial upright freezer stopped working. I opened it one day to find out my frozen foods have started to thaw out. What could create this problem? And how do I fix it on my own?

If the control is "ON" and the compressor is not running, you will need a start relay... Make sure you didn't accidentally turn it off by pushing food against the control knob!

Hi Dale Dibb, thank you for your inquiry!

I understand that the food inside of your Frigidaire freezer is getting frost on the inside of the packages. I would recommend turning the temperature up inside of your freezer. Additionally moisture inside of the package would cause frost to develop on the inside of the food packages.

Please assure that all possible moisture has been removed out of the food packages prior to placing the items inside of the freezer. If there is anything else that I can help you with, please feel free to reconnect! -Matt

Not sure if u still need help but the first thing I would do is remove the grills on the front and back and vacuum out the fins on the condenser...dust and grime collects here and will cause the unit to overheat and not cool properly....sometimes an air compressor can be used or air in a can for the hard to reach places.
Tr this and see what happens...good luck

Check condenser clean and fan working. Check it's not frozen solid because you've been running it full pelt; if it is, fully defrost it then set it at a mid range setting.

Check the door sits straight and square on the front. You can "adjust" with the heel of your hand to make it sit flat against the frame. Even a poor seal shouldn't make frozen food thaw - check and clean the condenser and fan

Can you hear the compressor (motor) in the rear of unit running ? Your freezer is thawing out for some reason and i would need to know if there is a digital temp.reading or is it a dile that regulates the temp.

i would make sure that the coils are all clean, inside and out. make sure the fan runs on the back, the water pan isn't over flowing.

my father was a cook
anf he lived by one rule of food

when in doubt thrwo it out

reason is that the evaporator is blocked with ice and hence no air circulation.
either
switch off for 24 hours with doors open
or
remove back panel inside freezer and melt ice off with a hairdryer

your food should not thaw in a frost free freezer. but I can not tell you why it is thawing, sorry.