A refrigerator appliance, comprising: a first refrigeration compartment; a condenser; an evaporator in thermal communication with the first refrigeration compartment; a refrigerant; a compressor; a refrigerant circuit arranged to allow flow of the refrigerant between the condenser, the evaporator and the compressor, the refrigerant circuit comprising a primary and a secondary evaporator conduit arranged in parallel between the condenser and the evaporator; a primary pressure reducing device arranged within the primary evaporator conduit and a secondary pressure reducing device arranged within the secondary evaporator conduit, the pressure reducing devices (32, 34) being set at different pressure reduction levels; a valve system in the evaporator conduits (22, 24) capable of selectively directing or restricting flow of the refrigerant through all of the pressure reducing devices (32, 34) at the same time; a suction line heat exchanger in thermal contact with the primary pressure reducing device or an intercooler arranged in thermal contact with the primary evaporator conduit in the portion of the refrigerant circuit downstream of valve system and upstream of primary pressure reduction device, wherein both the suction line heat exchanger or the intercooler are in thermal contact with the suction line exiting the first evaporator, a controller controlling the valve system and the compressor to maintain the first refrigeration compartment at any of a plurality of selectable temperatures; refrigerator wherein the suction line heat exchanger is not in thermal contact with the secondary pressure reducing device or the intercooler is not in thermal contact with the secondary evaporator conduit; wherein the evaporator has an exit sensor assembly to evaluate the condition of the refrigerant in the refrigerant circuit; characterized in that the condenser has an exit sensor assembly to evaluate the condition of the refrigerant in the refrigerant circuit; and the controller is configured to control the valve system based on inputs from the condenser exit sensor assembly and the evaporator exit sensor assembly to bypass the suction line heat exchanger or the intercooler during an initial phase of a compressor-ON cycle. a first refrigeration compartment; a condenser; an evaporator in thermal communication with the first refrigeration compartment; a refrigerant; a compressor; a refrigerant circuit arranged to allow flow of the refrigerant between the condenser, the evaporator and the compressor, the refrigerant circuit comprising a primary and a secondary evaporator conduit arranged in parallel between the condenser and the evaporator; a primary pressure reducing device arranged within the primary evaporator conduit and a secondary pressure reducing device arranged within the secondary evaporator conduit, the pressure reducing devices (32, 34) being set at different pressure reduction levels; a valve system in the evaporator conduits (22, 24) capable of selectively directing or restricting flow of the refrigerant through all of the pressure reducing devices (32, 34) at the same time; a suction line heat exchanger in thermal contact with the primary pressure reducing device or an intercooler arranged in thermal contact with the primary evaporator conduit in the portion of the refrigerant circuit downstream of valve system and upstream of primary pressure reduction device, wherein both the suction line heat exchanger or the intercooler are in thermal contact with the suction line exiting the first evaporator, a controller controlling the valve system and the compressor to maintain the first refrigeration compartment at any of a plurality of selectable temperatures; refrigerator wherein the suction line heat exchanger is not in thermal contact with the secondary pressure reducing device or the intercooler is not in thermal contact with the secondary evaporator conduit; wherein the evaporator has an exit sensor assembly to evaluate the condition of the refrigerant in the refrigerant circuit; characterized in that the condenser has an exit sensor assembly to evaluate the condition of the refrigerant in the refrigerant circuit; and the controller is configured to control the valve system based on inputs from the condenser exit sensor assembly and the evaporator exit sensor assembly to bypass the suction line heat exchanger or the intercooler during an initial phase of a compressor-ON cycle.