The first wine cooler's computer control unit did not work.  Both zones werre 41 degrres.  The top zone was set to 41 degrees and the lower unit was set to 51 degrres, however, the lower zone displayed a temperature of 87 degrees.  One call to Wayfair and they replaced the cooler.  I have not yet installed the second cooler.  I appreciate Wayfair's quite resolution of the problem.