A projector according to the invention includes a discharge lamp, a cooling section, and a control section. The control section is configured to execute a first cooling control in which a number of revolutions of the cooling section does not depend on an inter-electrode voltage of the discharge lamp and a second cooling control for controlling the cooling section based on first control information indicating a relation between the inter-electrode voltage and the number of revolutions. The number of revolutions in the first cooling control is equal to or smaller than the number of revolutions in the second cooling control. When the inter-electrode voltage is larger than a first voltage value or when a cumulative lighting time of the discharge lamp is larger than a first time, the control section configured to switch the control of the cooling section from the first cooling control to the second cooling control.