An injection molding machine, comprising: a heating cylinder comprising a plurality of zones (Z1, Z2, Z4, Z5a, Z5b); a plurality of heating parts (3, 30, 31, 32, 33, 34), each for heating a respective one of said zones, such that the heating cylinder is heatable by the plurality of heating parts (3, 30, 31, 32, 33, 34); a control part (2, 20) configured to individually control whether or not to supply electric power to each of at least two heating parts of the plurality of heating parts (3, 30, 31, 32, 33, 34) during lowered temperature operation; temperature sensors (4, 40, 41, 42, 43, 44) corresponding to the zones; and an input part configured to allow a user to input information into the injection molding machine; wherein the control part (2, 20) performs temperature controls of the zones (Z1, Z2, Z4, Z5a, Z5b) during molding operation and during lowered temperature operation; wherein the temperature controls are switchable between an on-state and an off-state during molding operation and during lowered temperature operation through the input part; wherein the injection molding machine is adapted such that: (a) the temperature controls during molding operation as well as during lowered temperature operation, in the on-state, are adapted such that the control part (2, 20) supplies electric power to the heating part (3, 30, 31, 32, 33, 34), corresponding to the respective zone and then the control part (2, 20) controls the temperature of the respective zone so that the temperature reaches a set temperature while monitoring a detected value of the temperature sensor (4, 40, 41, 42, 43, 44) corresponding to the zone continuously; and (b) the temperature controls during molding operation as well as during lowered temperature operation, in the off-state, do not control the temperature of the zones such that no electric power is supplied to the heating part (3, 30, 31, 32, 33, 34) of the corresponding zone; characterized in that a main setting switching region is provided to show "ON"/"OFF" states of temperature controls of the respective zones (Z1, Z2, Z4, Z5a, Z5b) during molding operation, and a lowered temperature setting switching region is provided to show "ON"/"OFF" states of temperature controls of the respective zones (Z1, Z2, Z4, Z5a, Z5b) during lowered temperature operation. a heating cylinder comprising a plurality of zones (Z1, Z2, Z4, Z5a, Z5b); a plurality of heating parts (3, 30, 31, 32, 33, 34), each for heating a respective one of said zones, such that the heating cylinder is heatable by the plurality of heating parts (3, 30, 31, 32, 33, 34); a control part (2, 20) configured to individually control whether or not to supply electric power to each of at least two heating parts of the plurality of heating parts (3, 30, 31, 32, 33, 34) during lowered temperature operation; temperature sensors (4, 40, 41, 42, 43, 44) corresponding to the zones; and an input part configured to allow a user to input information into the injection molding machine; wherein the control part (2, 20) performs temperature controls of the zones (Z1, Z2, Z4, Z5a, Z5b) during molding operation and during lowered temperature operation; wherein the temperature controls are switchable between an on-state and an off-state during molding operation and during lowered temperature operation through the input part; wherein the injection molding machine is adapted such that: (a) the temperature controls during molding operation as well as during lowered temperature operation, in the on-state, are adapted such that the control part (2, 20) supplies electric power to the heating part (3, 30, 31, 32, 33, 34), corresponding to the respective zone and then the control part (2, 20) controls the temperature of the respective zone so that the temperature reaches a set temperature while monitoring a detected value of the temperature sensor (4, 40, 41, 42, 43, 44) corresponding to the zone continuously; and (b) the temperature controls during molding operation as well as during lowered temperature operation, in the off-state, do not control the temperature of the zones such that no electric power is supplied to the heating part (3, 30, 31, 32, 33, 34) of the corresponding zone; (a) the temperature controls during molding operation as well as during lowered temperature operation, in the on-state, are adapted such that the control part (2, 20) supplies electric power to the heating part (3, 30, 31, 32, 33, 34), corresponding to the respective zone and then the control part (2, 20) controls the temperature of the respective zone so that the temperature reaches a set temperature while monitoring a detected value of the temperature sensor (4, 40, 41, 42, 43, 44) corresponding to the zone continuously; and (b) the temperature controls during molding operation as well as during lowered temperature operation, in the off-state, do not control the temperature of the zones such that no electric power is supplied to the heating part (3, 30, 31, 32, 33, 34) of the corresponding zone; characterized in that a main setting switching region is provided to show "ON"/"OFF" states of temperature controls of the respective zones (Z1, Z2, Z4, Z5a, Z5b) during molding operation, and a lowered temperature setting switching region is provided to show "ON"/"OFF" states of temperature controls of the respective zones (Z1, Z2, Z4, Z5a, Z5b) during lowered temperature operation.