TRUE 831999 Defrost Switch

The TRUE 831999 Defrost Switch is a refrigeration control component used in commercial equipment. It operates by monitoring evaporator conditions, typically temperature- or time-based signals, and initiating or terminating the defrost process to prevent ice buildup on the coil. Placed within the unit's electrical control system, it is commonly connected to the thermostat and defrost circuitry to ensure proper switching between cooling and defrost modes. It supports consistent temperature control and operation in foodservice equipment such as display coolers, prep tables, and storage refrigerators by maintaining clear evaporator airflow during continuous commercial operation.