TRANSPORTATION REFRIGERATION UNIT CONFIGURED TO CONSERVE ENERGY UTILIZED FOR COMPRESSOR CYCLES AFTER A DEFROST EVENT

A transportation refrigeration system (100), having: a cargo box (120) extending from a front end (130) to an aft end (140); a transportation refrigeration unit (TRU) (150) at the front end of the cargo box; wherein the TRU includes: a controller (160); a flow motivator (170); an evaporator coil (185); a first temperature sensor (305A) mounted near the evaporator coil; and a second temperature sensor (305B) mounted within the cargo box; wherein the controller is configured to cycle the flow motivator between an on-phase when a cargo box temperature is at or above an upper setpoint and an off-phase when the cargo box temperature is at a lower setpoint; and wherein following a defrost event that defrosts the evaporator coil, the controller is configured to monitor the second temperature sensor for determining when to transition between the on-phase and the off-phase, until a stable condition of the first sensor is determined.