My fridge / freezer has door display electronic controls to independently set either the freezer or refrigerator compartment temperatures in 1 degree F increments.
The freezer control settings seem to be within 1 degree of the setting. The refrigerator control settings, on average, seem to run 4 to 5 degrees above setting. What is the manufacturer's setting tolerance or acceptable range (i.e. +/- x degrees actual vs. set temperature) for this model's control settings vs. actual temperatures? Can the temperature settings be re-calibrated to improve accuracy? If so, how is that done?

Note: This refrigerator was installed 1 week ago. Actual temperatures were observed and measured using a Taylor 5924 (analog) and Acu-Rite (digital) 00986 wireless refrigerator / freezer thermometers. Both thermometers were tested and confirmed to be accurate within +/- 1 degree F.