Looking for some input, I have two undercounter Uline refrigerators Model U-1224RS-00B). We bought them both new one year ago. One of the units wants to run continuously. It rises to the temperature set on the thermostat, holds that temp but continues running. I cut the power off for 6 hours, put power back on, the refrigerator ran as it should, rising to temperature set on the thermostat. The unit ran as it should, cutting out when at temp, seems to hold temp well kicks back on when it needs to bring temp back to thermostat setting. Problem is it slowly drifts back to where it wants to run continuously. Has anyone seen this with a newer Uline units and can offer some advice of what may be the issue?

thanks