The TRUE 831999 Defrost Switch is a crucial component in TRUE refrigeration units, playing a vital role in the automatic defrost cycle.This switch initiates and controls the defrost process, preventing ice buildup on the evaporator coils. By accurately triggering the defrost cycle, it ensures efficient cooling and maintains consistent temperatures within the unit. A properly functioni... https://partsfe.ca/defrost-switch-for-true-part-831999