Norcold 900/9100 Series Manual....pg 7-13 900 Series FAULT Codes
http://rvrefrigeratorrepair.com/wp-content/uploads/2016/08/Norcold-Service-900-9100YES.....if thermistor is unplugged the fridge reverts to BOS (Backup Operating System-----continues cooling not based on temp but based on TIME. Time is based on temp setting. Higher number --longer time)
Moving thermistor up/down does NOT affect that fridge....it has adjustable temp settings. Moving thermistor will affect temp (minor) with models that have AUTO TEMP ADJUST